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123 Highlights 42 Differences 9 Reactions 0 Likes
Nitecore UM4 vs Nitecore UMS4: 123 Highlights & 42 Differences — So, Which Charger Actually Works Better
Quickly learn which charger supports more devices and offers universal compatibility. Find out which charger suits your needs best. Which one’s your upgrade — Nitecore UM4 or Nitecore UMS4? We compared specs like usb-c ports, cable length, interchangeable plugs & width and more to help you choose smarter.
Plug Insertion Cycles: High Indicates how many plug-in and unplug cycles the charger connector is designed to withstand before wear affects performance. with 1 points higher
Nitecore UM4 vs UMS4: A Tale of Compact Power Meets Versatile Charging
Comparing the Nitecore UM4 and UMS4 reveals two intelligent USB charging devices designed to accommodate multiple gadgets. Both units allow simultaneous connection of 4 devices, possess high energy efficiency ratings, and feature multi-layer safety redundancies with thermal fail-safe modes.
However, fundamental differences stand out: the UM4 is a compact, beginner-friendly charger with a modest 18W maximum output power and a single USB-A port, prioritizing lightweight and straightforward travel convenience. Meanwhile, the UMS4 targets intermediate users, offering a robust 100W output power, three USB-C ports, and advanced safety mechanisms, suited for versatile, power-hungry devices.
Exploring the Strengths of Nitecore UM4: Simple, Lightweight, and Travel-Optimized
The Nitecore UM4 shines as a highly compact charging hub, classified under compact travel size with a slim profile (only 1.61 inches in height) and weighing merely 0.33 lbs, making it exceptionally portable. Its single USB-A port supports standard charging protocols, ensuring compatibility across a range of low-power devices while emphasizing safety with features such as short circuit protection and multi-layer safety redundancy.
Charging up to four devices simultaneously, it maintains consistent power distribution through a dynamic method, enhanced by high heat management efficiency via passive dissipation, keeping temperatures stable below the 140°F thermal throttling threshold. For travelers or casual users, the external cable management design and LED indicators further boost its daily use convenience.
In addition, the UM4 earns points for environmental responsibility, boasting a high energy efficiency rating and medium material sustainability level, all wrapped in durable, heat-resistant plastic with a commendable drop resistance level 3. The inclusion of a 1-year warranty and customer support through email and an online portal reassures beginners about long-term reliability.
UMS4: Charging Versatility and Power for the Demanding User
The Nitecore UMS4 makes a compelling case for users whose devices demand more juice and connectivity options. Released alongside the UM4 in 2018 but designed for intermediate users, it boasts a potent maximum output power of 100W, hugely eclipsing the UM4's capabilities.
Its configuration includes three versatile USB-C ports paired with one USB-A port, ensuring broad compatibility and future-proofed charging flexibility. Wireless charging is also more potent here, offering up to 15W wireless power as compared to UM4's 10W. Furthermore, the UMS4 provides instant protection response, a safety enhancement over the UM4's unspecified response time, contributing to safer high-speed charging of heavy-duty and multiple modern devices.
The charger incorporates a detachable cable with a straight plug orientation, optimizing cable management for daily use, especially valuable for frequent travelers who prefer tidiness without sacrificing convenience. Despite being slightly larger (3.15 inches high) and weighing about 0.3 lbs, it remains classified as a standard travel-size unit, striking a balance between portability and function.
Built with similar durable materials and boasting a high energy efficiency rating along with low energy loss as heat, it addresses environmental concerns effectively. The broader support channels, including phone and chat, supplement the warranty's 1-year coverage and improved replacement policy, enhancing overall user confidence.
Quick Take
The Nitecore UM4 is perfect for those who value portability, simplicity, and lightweight design without heavy power needs. In contrast, the UMS4 stands out for power output, multiple USB-C ports, and instant safety features, aligning well with users who juggle various power-hungry gadgets.
Bottom Line Recommendation
If your priority is a compact charger for everyday low-power device charging with ease of travel, the UM4 is an excellent budget-friendly and reliable option. However, if you want a robust charger that can energize multiple modern devices swiftly with added safety and versatile connectivity, investing a bit more in the UMS4 will pay off handsomely.
Verdict
Winner: Nitecore UMS4 - For superior power delivery, extensive connectivity options, and enhanced safety responses, it caters effectively to intermediate users and multi-device setups.
Runner-up: Nitecore UM4 - Its compact, lightweight form and simple operation make it an ideal entry-level charger for casual users with modest charging requirements.
Both Nitecore UM4 and Nitecore UMS4 were released in 2018, implying they share a similar generation and possibly technological advancements available at that time.
The year the charger model was first released to market.
In the battle of Release Year, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 10 score measurement.
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Both Nitecore UM4 and Nitecore UMS4 are designed for Indoor usage environments, making them suitable for home or office charging setups, ensuring safety and effectiveness in controlled conditions.
Specifies the environments where the charger is designed to operate.
In the battle of Usage Environment, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 11 score measurement.
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Charging Technology is the same for both Nitecore UM4 and Nitecore UMS4, utilizing Standard Charging methods. This means standard protocols are used for battery charging in both models.
Indicates the core technology used to deliver power efficiently.
In the battle of Charging Technology, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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User Level designation differs between Nitecore UM4 and Nitecore UMS4; UM4 is tailored for Beginners, whereas UMS4 suits Intermediate users. This influences user experience, with UMS4 likely offering more advanced features for experienced users.
Describes the technical experience level required to use the charger effectively.
In the battle of User Level, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 39 score measurement.
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Product Name
What is the product name?
63 Nitecore UM4 0Votes Nitecore UM4
60 Nitecore UMS4 0Votes Nitecore UMS4
vs Product Name
The Product Name for Nitecore UM4 is 'Nitecore UM4', while for Nitecore UMS4 it is 'Nitecore UMS4'. This fundamental difference in naming reflects their distinct models and identity in the market, allowing users to easily distinguish between the two devices.
Official product name used to identify the charger model.
In the battle of Product Name, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 3 score measurement.
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Power Source
What is the power source?
73 Nitecore UM4 0Votes USB Power
72 Nitecore UMS4 0Votes DC Outlet
Nitecore UMS4
This charger draws power from a DC outlet, typical for mobile environments like vehicle or battery bank charging applications.
Defines where the charger draws its power from.
In the battle of Power Source, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Certifications
What certifications does this charger have?
53 Nitecore UM4 0Votes RoHS, CE, FCC
65 Nitecore UMS4 0Votes CE, FCC, RoHS
Nitecore UM4
Certified with RoHS, CE, and FCC marks showing compliance with environmental, safety, and electromagnetic standards.
Lists official safety, quality, and compliance certifications held by the charger.
In the battle of Certifications, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 12 score measurement.
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Charger Type
What type of charger is this?
63 Nitecore UM4 0Votes Multi-Port Charger
32 Nitecore UMS4 0Votes Wall Charger
Defines the primary charger category based on form and usage.
In the battle of Charger Type, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 31 score measurement.
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Intended Use
What is the intended use of this charger?
68 Nitecore UM4 0Votes Home, Office, Travel
72 Nitecore UMS4 0Votes Home, Office, Travel
Describes where and how the charger is primarily intended to be used.
In the battle of Intended Use, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 4 score measurement.
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Device Compatibility
What devices are compatible with this charger?
43 Nitecore UM4 0Votes Accessory
42 Nitecore UMS4 0Votes Accessory
Indicates the types of devices the charger can power.
In the battle of Device Compatibility, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Compatibility Notes
Are compatibility notes clearly provided?
No 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Indicates whether additional compatibility limitations or requirements are clearly disclosed.
In the battle of Compatibility Notes, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ .
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Installation Type
How is the charger installed?
43 Nitecore UM4 0Votes Desktop
42 Nitecore UMS4 0Votes Plug-In
Describes how the charger is installed or connected.
In the battle of Installation Type, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Mounting Style
What is the mounting style?
13 Nitecore UM4 0Votes Desktop
52 Nitecore UMS4 0Votes Desktop
Indicates how the charger is physically positioned during use.
In the battle of Mounting Style, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 39 score measurement.
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Regulatory Region
Which regulatory regions does it support?
93 Nitecore UM4 0Votes Global
72 Nitecore UMS4 0Votes Global
Indicates the regions where the charger meets regulatory standards.
In the battle of Regulatory Region, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 21 score measurement.
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Product Form Factor
What is the product form factor?
0 Nitecore UM4 0Votes Standard
32 Nitecore UMS4 0Votes Standard
Describes the overall physical form and size profile of the charger.
In the battle of Product Form Factor, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 32 score measurement.
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Peak Power Handling for Nitecore UM4 is 15 Watts, compared to the Nitecore UMS4's substantial 120 Watts. This makes the UMS4 better for handling demanding power loads.
The maximum short-term power the charger can safely handle.
In the battle of Peak Power Handling, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 105.0 Watt measurement.
Based on community votes for Peak Power Handling, Nitecore UM4 ◉ earned 0 votes, less than Nitecore UMS4 ◉, which got 1 votes.
The Maximum Output Power varies significantly: Nitecore UM4 outputs 18 Watts, whereas Nitecore UMS4 delivers a much higher 100 Watts. The UMS4 is more suitable for high-power charging needs.
The highest total power the charger can deliver to connected devices.
In the battle of Maximum Output Power, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 82.0 Watt measurement.
Based on community votes for Maximum Output Power, Nitecore UM4 ◉ earned 0 votes, less than Nitecore UMS4 ◉, which got 1 votes.
The max output power on the UMS4 is way higher which will handle heavy loads better in real use.
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Input Frequency
What input frequency is supported?
60 Hz 0Votes
50 Hz 0Votes
Nitecore UM4
Designed to operate at an input frequency of 60 Hz, matching typical regions such as North America.
Nitecore UMS4
The input frequency is 50 Hz, which matches the standard electrical grid frequency in many regions worldwide.
The electrical frequency range the charger can accept.
In the battle of Input Frequency, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 10.0 Hz measurement.
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Standby Power Consumption
How much power is used on standby?
0.5 Watt 0Votes
0.2 Watt 0Votes
Nitecore UM4
Standby power consumption is low at 0.5 Watt, contributing to energy savings when not actively charging devices.
Nitecore UMS4
Standby power consumption is very low at 0.2 Watt (0.2 W), minimizing energy waste when not actively charging devices.
Power consumed when the charger is plugged in but not actively charging.
In the battle of Standby Power Consumption, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering higher 0.3 Watt measurement.
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Minimum Output Power
What is the minimum output power?
1.5 Watt 0Votes
5 Watt 0Votes
Nitecore UMS4
Minimum output power is 5 Watt (5 W), suitable for charging smaller devices and maintaining trickle charge safely.
The lowest stable power output supported by the charger.
In the battle of Minimum Output Power, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering lower 3.5 Watt measurement.
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Input Voltage
What input voltage does it support?
5 Volt 0Votes
100 Volt 0Votes
Nitecore UM4
Designed for an input voltage of 5 Volt, compatible with standard USB power specifications.
The voltage range required from the power source to operate safely.
In the battle of Input Voltage, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 95.0 Volt measurement.
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Output Voltage
What is the output voltage?
4.35 Volt 0Votes
20 Volt 0Votes
vs Output Voltage
Output Voltage is 4.35 Volts on the Nitecore UM4, while Nitecore UMS4 provides 20 Volts. The higher voltage on UMS4 supports faster or more versatile device charging.
The voltage supplied to connected devices during charging.
In the battle of Output Voltage, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 15.7 Volt measurement.
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Output Current
What is the output current?
1.5 A 0Votes
3 A 0Votes
Nitecore UM4
Output current is 1.5 A, sufficient for efficient charging of many mobile devices.
The maximum current delivered to devices for charging.
In the battle of Output Current, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 1.5 A measurement.
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Input Current
How much input current does it draw?
2 A 0Votes
3 A 0Votes
vs Input Current
Input Current differs with Nitecore UM4 at 2 Amperes and Nitecore UMS4 at 3 Amperes, meaning UMS4 can draw more current for faster charging capabilities.
The amount of current drawn from the power source during operation.
In the battle of Input Current, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering lower 1.0 A measurement.
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Power Efficiency
How efficient is the charger?
93 Nitecore UM4 0Votes High
92 Nitecore UMS4 0Votes High
Indicates how effectively input power is converted into usable output power.
In the battle of Power Efficiency, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Power Factor
What is the power factor?
53 Nitecore UM4 0Votes Medium
42 Nitecore UMS4 0Votes Medium
Indicates how efficiently electrical power is drawn from the power source.
In the battle of Power Factor, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 11 score measurement.
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Voltage Regulation
How good is the voltage regulation?
63 Nitecore UM4 0Votes Good
72 Nitecore UMS4 0Votes Excellent
Indicates how well output voltage remains stable under varying load conditions.
In the battle of Voltage Regulation, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 9 score measurement.
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Current Regulation
How good is the current regulation?
93 Nitecore UM4 0Votes Excellent
82 Nitecore UMS4 0Votes Excellent
Indicates how consistently current is controlled during charging.
In the battle of Current Regulation, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 11 score measurement.
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Load Regulation
How good is the load regulation?
43 Nitecore UM4 0Votes Good
67 Nitecore UMS4 0Votes Good
Measures output stability as load increases or decreases.
In the battle of Load Regulation, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 24 score measurement.
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Ripple & Noise
How much ripple and noise is present?
93 Nitecore UM4 0Votes Low
92 Nitecore UMS4 0Votes Low
Indicates the level of electrical noise present in the output.
In the battle of Ripple & Noise, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Surge Protection Rating
How strong is the surge protection?
60 Nitecore UM4 0Votes Enhanced
82 Nitecore UMS4 0Votes Enhanced
Indicates the strength of protection against voltage spikes.
In the battle of Surge Protection Rating, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 22 score measurement.
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Short Circuit Protection
Does it have short circuit protection?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
vs Short Circuit Protection
Both Nitecore UM4 and Nitecore UMS4 feature Short Circuit Protection, ensuring device and user safety during charging.
Automatically shuts down power if a short circuit is detected.
In the battle of Short Circuit Protection, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Overcurrent Protection
Is overcurrent protection included?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Prevents damage by limiting excessive current flow.
In the battle of Overcurrent Protection, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Overvoltage Protection
Does it prevent overvoltage?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Protects devices from excessive voltage output.
In the battle of Overvoltage Protection, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Both devices use Dynamic Power Distribution Method, optimizing power allocation among connected devices for both Nitecore UM4 and UMS4.
Describes how power is allocated across multiple ports.
In the battle of Power Distribution Method, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 11 score measurement.
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Heat Management Efficiency is Rated 'High' in both Nitecore UM4 and UMS4, preventing overheating during prolonged use.
Measures how effectively heat is managed during charging.
In the battle of Heat Management Efficiency, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Idle Charging Behavior is 'Standby' for both Nitecore UM4 and Nitecore UMS4, indicating they maintain power without excessive energy use when not actively charging.
Describes behavior when a device is fully charged but still connected.
In the battle of Idle Charging Behavior, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 19 score measurement.
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Maximum Charging Speed
What is the maximum charging speed?
1.5 Watt 0Votes
3,000 Watt 0Votes
Nitecore UM4
The maximum charging speed is rated at a modest power output of 1.5 Watt, suitable for low-power devices and trickle charging scenarios.
Nitecore UMS4
Maximum charging speed is 3000 Watt (3000 W), suggesting this specification might reflect cumulative or theoretical charging capability across multiple ports or is a typographical error requiring official confirmation.
The highest charging power delivered to a single device.
In the battle of Maximum Charging Speed, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 2,998.5 Watt measurement.
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Simultaneous Device Charging
How many devices can be charged simultaneously?
33 Nitecore UM4 0Votes 4
71 Nitecore UMS4 1Votes 4
vs Simultaneous Device Charging
Both Nitecore UM4 and UMS4 support Simultaneous Device Charging of 4 devices, ideal for multi-device charging scenarios.
The maximum number of devices that can be charged at the same time.
In the battle of Simultaneous Device Charging, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 38 score measurement.
Based on community votes for Simultaneous Device Charging, Nitecore UM4 ◉ earned 0 votes, less than Nitecore UMS4 ◉, which got 1 votes.
Both can charge 4 devices simultaneously but the UMS4 seems to have a bit more power behind it.
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Full Charge Time Estimate
How long does a full charge take?
Who knows? 0Votes Nitecore UM4 (Help us out by suggesting one!)
32 Nitecore UMS4 0Votes 3–6 hours
Nitecore UMS4
Full charge time estimate ranges from 3 to 6 hours, a typical duration for charging mid-size to large capacity batteries.
Estimated time required to fully charge a typical device.
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Charging Speed
What is the charging speed category?
53 Nitecore UM4 0Votes Fast
52 Nitecore UMS4 0Votes Fast
Classifies overall charging speed based on supported power and protocols.
In the battle of Charging Speed, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Intelligent Power Allocation
Does it allocate power intelligently?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Automatically adjusts power delivery based on connected devices.
In the battle of Intelligent Power Allocation, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Charging Stability
How stable is the charging performance?
33 Nitecore UM4 0Votes Stable
42 Nitecore UMS4 0Votes Stable
Reflects how consistent charging output remains over time.
In the battle of Charging Stability, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 9 score measurement.
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Throttling Behavior
How does the charger throttle performance?
93 Nitecore UM4 0Votes Gradual
92 Nitecore UMS4 0Votes Gradual
Describes how charging speed is reduced when limits are reached.
In the battle of Throttling Behavior, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Charging Consistency
Is charging speed consistent?
93 Nitecore UM4 0Votes Consistent
92 Nitecore UMS4 0Votes Consistent
vs Charging Consistency
Charging Consistency is noted as Consistent for both Nitecore UM4 and UMS4, ensuring reliable power output during charging.
Indicates how evenly charging speed is maintained throughout a session.
In the battle of Charging Consistency, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Adaptive Charging
Does it support adaptive charging?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Adjusts charging patterns based on device needs and conditions.
In the battle of Adaptive Charging, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Device Detection Accuracy
How accurate is device detection?
93 Nitecore UM4 0Votes High
92 Nitecore UMS4 0Votes High
Accuracy in identifying connected devices and their power needs.
In the battle of Device Detection Accuracy, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Startup Charging Delay
Is there a delay before charging starts?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Time taken before charging begins after a device is connected.
In the battle of Startup Charging Delay, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Weight of Nitecore UM4 is 0.33 lbs while Nitecore UMS4 is slightly lighter at 0.3 lbs. UM4 is marginally heavier but both are lightweight for easy transport.
Total weight of the charger including built-in components.
In the battle of Weight, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering equal 0.33 lbs measurement.
Based on community votes for Weight, Nitecore UM4 ◉ earned 1 votes, more than Nitecore UMS4 ◉, which got 0 votes.
Who knows? 0Votes Nitecore UMS4 (Help us out by suggesting one!)
vs Cable Thickness
Cable Thickness is stated as 0 inches for Nitecore UM4 but unavailable for Nitecore UMS4, limiting direct comparison of cable robustness.
Thickness of the charging cable, affecting durability and flexibility.
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Depth
What is the depth of the charger?
4.21 inch 0Votes
2.9 inch 0Votes
Nitecore UM4
Depth measures 4.21 inch (10.70 cm), a compact size for desktop or travel use.
The front-to-back measurement of the charger body.
In the battle of Depth, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering higher 1.3 inch measurement.
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Plug Profile Depth
How far does the plug stick out?
0 inch 0Votes
1.18 inch 0Votes
Depth of the plug profile when inserted into an outlet.
In the battle of Plug Profile Depth, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Travel Size Classification
Is this charger travel-sized?
63 Nitecore UM4 0Votes Compact
22 Nitecore UMS4 0Votes Standard
vs Travel Size Classification
Travel Size Classification differs: Nitecore UM4 is Compact, better suited for portability; Nitecore UMS4 is Standard size, potentially less portable but more powerful.
Overall size category based on dimensions and portability.
In the battle of Travel Size Classification, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 41 score measurement.
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Both Nitecore UM4 and UMS4 have Medium Material Sustainability Level, aligning with moderate environmental considerations in production.
Use of sustainable or environmentally friendly materials.
In the battle of Material Sustainability Level, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Plug Material
What material is the plug made of?
43 Nitecore UM4 0Votes Plastic, Metal
42 Nitecore UMS4 0Votes Plastic, Metal
Nitecore UMS4
Plug material combines Plastic and Metal for durability and electrical safety, balancing insulation with conductive strength.
Material used for the plug prongs and structure.
In the battle of Plug Material, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Port Reinforcement
Are the ports reinforced?
93 Nitecore UM4 0Votes Reinforced
0 Nitecore UMS4 0Votes Standard
Nitecore UM4
Ports are reinforced to increase durability and ensure stable connections during frequent plugging and unplugging.
Indicates whether charging ports are reinforced for durability.
In the battle of Port Reinforcement, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 93 score measurement.
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Fire-Retardant Rating
What is the fire-retardant rating?
93 Nitecore UM4 0Votes V-0
82 Nitecore UMS4 0Votes V-0
Nitecore UM4
Fire-retardant rating is V-0, indicating excellent resistance to fire and enhancing safety in adverse conditions.
Fire safety rating of the charger materials.
In the battle of Fire-Retardant Rating, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 11 score measurement.
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Drop Resistance
How drop-resistant is the charger?
3 ft 0Votes
Who knows? 0Votes Nitecore UMS4 (Help us out by suggesting one!)
vs Drop Resistance
Drop Resistance is rated 3 feet for Nitecore UM4 whereas unavailable for Nitecore UMS4, making UM4 potentially more robust against accidental falls.
Maximum drop height the charger can withstand without damage.
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Housing Material
What is the housing material?
43 Nitecore UM4 0Votes Plastic
42 Nitecore UMS4 0Votes Plastic
vs Housing Material
Both Nitecore UM4 and UMS4 use Plastic for their Housing Material, ensuring similar durability and weight characteristics.
Primary material used for the outer charger casing.
In the battle of Housing Material, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Surface Finish
What is the surface finish?
63 Nitecore UM4 0Votes Matte
22 Nitecore UMS4 0Votes Matte
External surface finish affecting grip and aesthetics.
In the battle of Surface Finish, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 41 score measurement.
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Build Rigidity
How rigid is the charger build?
93 Nitecore UM4 0Votes Solid
92 Nitecore UMS4 0Votes Solid
Overall structural stiffness of the charger body.
In the battle of Build Rigidity, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Scratch Resistance
How scratch-resistant is it?
43 Nitecore UM4 0Votes Medium
32 Nitecore UMS4 0Votes Medium
vs Scratch Resistance
Scratch Resistance is rated Medium for both Nitecore UM4 and UMS4, indicating moderate protection against surface wear.
Resistance of the surface to scratches and abrasions.
In the battle of Scratch Resistance, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 11 score measurement.
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Moisture Resistance
Is it resistant to moisture?
0 Nitecore UM4 0Votes None
0 Nitecore UMS4 0Votes None
Ability to withstand moisture exposure.
In the battle of Moisture Resistance, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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The protection response time on the UMS4 is instant which adds to its safety appeal big time.
See more
Overheat Protection
Does it have overheat protection?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Automatically reduces or shuts off power when excessive heat is detected.
In the battle of Overheat Protection, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Temperature Monitoring
Is temperature actively monitored?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Continuously monitors internal temperature during operation.
In the battle of Temperature Monitoring, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Electrical Isolation
Is electrical isolation implemented?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Separates high-voltage and low-voltage components for safety.
In the battle of Electrical Isolation, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Grounding
Does it support grounding?
No 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Supports grounding to reduce shock and electrical interference.
In the battle of Grounding, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ .
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Child Safety Shutter
Is there a child safety shutter?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Prevents accidental insertion of objects into live ports.
In the battle of Child Safety Shutter, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Anti-Spark Protection
Does it have anti-spark protection?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Reduces sparking when plugging or unplugging devices.
In the battle of Anti-Spark Protection, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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EMI Protection
Is EMI protection included?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Protects against electromagnetic interference affecting nearby electronics.
In the battle of EMI Protection, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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ESD Protection
Is ESD protection supported?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Shields the charger from electrostatic discharge damage.
In the battle of ESD Protection, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Auto Shut-Off
Does it shut off automatically?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Automatically cuts power when unsafe conditions are detected.
In the battle of Auto Shut-Off, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Fault Detection
Can it detect electrical faults?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Detects abnormal electrical conditions during operation.
In the battle of Fault Detection, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Safety Certification Level
What is the safety certification level?
63 Nitecore UM4 0Votes Enhanced
72 Nitecore UMS4 0Votes Enhanced
Overall strength of safety certifications achieved.
In the battle of Safety Certification Level, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 9 score measurement.
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Level of compatibility across different device brands.
In the battle of Cross-Brand Compatibility, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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USB Power Delivery
Does it support USB Power Delivery?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Indicates support for the USB Power Delivery standard for fast and flexible charging.
In the battle of USB Power Delivery, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Quick Charge
Does it support Quick Charge?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Indicates compatibility with Qualcomm Quick Charge technology.
In the battle of Quick Charge, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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PPS
Does it support PPS?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Supports Programmable Power Supply for efficient fast charging.
In the battle of PPS, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Wireless Charging Standard
Which wireless charging standard is supported?
Who knows? 0Votes Nitecore UM4 (Help us out by suggesting one!)
Who knows? 0Votes Nitecore UMS4 (Help us out by suggesting one!)
Specifies the wireless charging standard supported.
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Apple Charging
Is it compatible with Apple devices?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Optimized compatibility with Apple devices and charging requirements.
In the battle of Apple Charging, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Android Charging
Is it compatible with Android devices?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Ensures compatibility with Android devices and charging protocols.
In the battle of Android Charging, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Tablet Charging
Does it support tablet charging?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Indicates compatibility with tablets and similar devices.
In the battle of Tablet Charging, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Wearable Charging
Can it charge wearables?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Supports charging of wearables like smartwatches or earbuds.
In the battle of Wearable Charging, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Thermal dissipation is passive, meaning heat is managed without active components like fans, contributing to silent operation.
Method used to release heat during operation.
In the battle of Thermal Dissipation Method, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 29 score measurement.
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Thermal throttling occurs at 140°F (60°C) to prevent overheating and preserve internal component longevity.
Temperature at which charging power is reduced to prevent overheating.
In the battle of Thermal Throttling Threshold, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ , delivering equal 140.00 °F measurement.
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Temperature stability during prolonged high-load charging.
In the battle of Sustained Load Temperature Stability, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Internal Cooling Design
What internal cooling design is used?
53 Nitecore UM4 0Votes Airflow Channels
62 Nitecore UMS4 0Votes Heat Sink
Nitecore UM4
Internal cooling uses airflow channels, an effective passive design to dissipate heat without noisy fans.
Nitecore UMS4
Internal cooling design uses a Heat Sink to dissipate heat passively, helping maintain safe operating temperatures without fan noise.
Internal structure designed to manage heat.
In the battle of Internal Cooling Design, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 9 score measurement.
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Operating Temperature Range
What is the operating temperature range?
73 Nitecore UM4 0Votes 32–104°F
52 Nitecore UMS4 0Votes 32–104°F
Nitecore UM4
Operates reliably within a temperature range of 32–104°F (0–40°C), suitable for most indoor environments.
The temperature range within which the charger operates safely.
In the battle of Operating Temperature Range, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 21 score measurement.
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Storage Temperature Range
What is the storage temperature range?
53 Nitecore UM4 0Votes -4–140°F
77 Nitecore UMS4 0Votes -4–158°F
Nitecore UMS4
The storage temperature range is from -4 to 158°F (-20 to 70°C), supporting device safety in a wide variety of environmental conditions.
Temperature range safe for storing the charger when not in use.
In the battle of Storage Temperature Range, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 24 score measurement.
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Fanless Design
Is the charger fanless?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Indicates whether cooling is achieved without a fan.
In the battle of Fanless Design, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
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Noise Level
How noisy is the charger?
0 dB 0Votes
Who knows? 0Votes Nitecore UMS4 (Help us out by suggesting one!)
Operational noise produced during charging.
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Ambient Temperature Tolerance
How tolerant is it to ambient temperatures?
43 Nitecore UM4 0Votes Medium
92 Nitecore UMS4 0Votes High
Ability to perform in varying ambient temperatures.
In the battle of Ambient Temperature Tolerance, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 49 score measurement.
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Altitude Operating Range
What altitude can it operate at?
Who knows? 0Votes Nitecore UM4 (Help us out by suggesting one!)
Who knows? 0Votes Nitecore UMS4 (Help us out by suggesting one!)
Maximum altitude at which the charger operates reliably.
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Rated as premium in manufacturing quality, indicating superior build materials and assembly standards.
Overall manufacturing quality classification.
In the battle of Manufacturing Quality Level, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Average reliability level indicating how often failures are expected.
In the battle of Mean Time Between Failures, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Ability to withstand heat, humidity, and other stresses.
In the battle of Environmental Stress Resistance, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Plug Insertion Cycles
How durable is the plug connection over time?
93 Nitecore UM4 0Votes High
92 Nitecore UMS4 0Votes High
Indicates how many plug-in and unplug cycles the charger connector is designed to withstand before wear affects performance.
In the battle of Plug Insertion Cycles, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Port Wear Resistance
How resistant are the ports to wear?
93 Nitecore UM4 0Votes High
92 Nitecore UMS4 0Votes High
Resistance of charging ports to wear over time.
In the battle of Port Wear Resistance, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Long-Term Stability
How stable is long-term performance?
93 Nitecore UM4 0Votes Stable
92 Nitecore UMS4 0Votes Stable
Performance consistency over extended use periods.
In the battle of Long-Term Stability, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Reliability Certification
Is reliability certified?
Yes 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Indicates whether reliability has been independently certified.
In the battle of Reliability Certification, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 48 score measurement.
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Energy & Efficiency Compliance 8
Energy Efficiency Rating
What is the energy efficiency rating?
93 Nitecore UM4 0Votes High
92 Nitecore UMS4 0Votes High
Nitecore UMS4
This charger has a High energy efficiency rating, meaning it conserves energy well during operation, reducing waste and electrical costs.
Overall classification of how efficiently the charger converts power.
In the battle of Energy Efficiency Rating, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Energy Star Compliance
Is it Energy Star compliant?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Indicates compliance with Energy Star efficiency standards.
In the battle of Energy Star Compliance, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Standby Efficiency
How efficient is the charger in standby mode?
93 Nitecore UM4 0Votes High
92 Nitecore UMS4 0Votes High
Indicates how efficiently the charger uses power while plugged in but not actively charging.
In the battle of Standby Efficiency, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Eco Mode
Does it support eco mode?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Reduces power consumption when full charging is not required.
In the battle of Eco Mode, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Power Loss Rating
How much power is lost during operation?
93 Nitecore UM4 0Votes Low
92 Nitecore UMS4 0Votes Low
Indicates the amount of input power lost during conversion and operation.
In the battle of Power Loss Rating, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 1 score measurement.
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Green Materials Usage
Are green materials used?
No 0Votes Nitecore UM4
No 0Votes Nitecore UMS4
Uses environmentally friendly or recycled materials.
In the battle of Green Materials Usage, Nitecore UM4 ◉ is same as Nitecore UMS4 ◉ .
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Carbon Footprint Category
What is the carbon footprint category?
33 Nitecore UM4 0Votes Medium
42 Nitecore UMS4 0Votes Medium
Estimated environmental impact from production and use.
In the battle of Carbon Footprint Category, Nitecore UM4 ◉ is worse than Nitecore UMS4 ◉ , delivering lower 9 score measurement.
Don’t keep it to yourself — be the first to react and review the Carbon Footprint Category on Nitecore UM4 ◉ vs Nitecore UMS4 ◉ and help others decide!
Energy Saving Features
Does it have energy-saving features?
Yes 0Votes Nitecore UM4
Yes 0Votes Nitecore UMS4
Built-in features designed to reduce energy consumption.
In the battle of Energy Saving Features, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 8 score measurement.
Don’t keep it to yourself — be the first to react and review the Energy Saving Features on Nitecore UM4 ◉ vs Nitecore UMS4 ◉ and help others decide!
The charger comes with a 1-year warranty, providing standard coverage for defects and performance issues.
Duration of warranty coverage provided with the charger.
In the battle of Warranty Length, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 21 score measurement.
Don’t keep it to yourself — be the first to react and review the Warranty Length on Nitecore UM4 ◉ vs Nitecore UMS4 ◉ and help others decide!
Customer Support Availability
When is customer support available?
23 Nitecore UM4 0Votes Business Hours
12 Nitecore UMS4 0Votes Business Hours
Nitecore UMS4
Customer support availability is during Business Hours, accommodating weekday queries and assistance needs.
Availability of customer support services.
In the battle of Customer Support Availability, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 11 score measurement.
Don’t keep it to yourself — be the first to react and review the Customer Support Availability on Nitecore UM4 ◉ vs Nitecore UMS4 ◉ and help others decide!
Replacement Policy
What is the replacement policy?
53 Nitecore UM4 0Votes Limited Returns
22 Nitecore UMS4 0Votes Standard Returns
Defines the terms under which a defective or faulty charger can be replaced.
In the battle of Replacement Policy, Nitecore UM4 ◉ is better than Nitecore UMS4 ◉ , delivering higher 31 score measurement.
Don’t keep it to yourself — be the first to react and review the Replacement Policy on Nitecore UM4 ◉ vs Nitecore UMS4 ◉ and help others decide!
Surveys
Because hot takes deserve votes.
Charging Speed
How satisfied are you with the charging speed of this chargers when powering everyday devices?
Extremely fast charging — Under 1 hour
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Very fast charging — 1 to 2 hours
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Decent charging speed — 2 to 4 hours
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Slow charging — 4 to 6 hours
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Very slow charging — Over 6 hours
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Power Output Performance
How well does this chargers provide enough power for phones, tablets, or laptops?
Handles high-demand devices easily — 65 watts or more
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Strong and reliable output — 45 to 64 watts
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Good for most daily devices — 25 to 44 watts
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Limited power capability — 10 to 24 watts
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Very weak power delivery — Under 10 watts
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Durability and Build Quality
How durable does this chargers feel during long-term daily use?
Feels built to last a long time — Over 5 years
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Very solid and dependable — 3 to 5 years
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Decently built for regular use — 2 to 3 years
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Feels somewhat fragile — 1 to 2 years
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Breaks down too quickly — Under 1 year
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Portability and Size
How easy is it to carry this chargers for travel or commuting?
Ultra compact and pocketable — Under 3 ounces
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Light and travel friendly — 3 to 5 ounces
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Moderately easy to carry — 5 to 7 ounces
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Somewhat bulky — 7 to 10 ounces
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Heavy and inconvenient — Over 10 ounces
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Heat Management
How well does this chargers control heat during extended charging sessions?
Stays cool even under heavy use — Under 90 degrees Fahrenheit
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Gets slightly warm — 90 to 100 degrees Fahrenheit
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Noticeably warm to the touch — 100 to 110 degrees Fahrenheit
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Runs quite hot — 110 to 120 degrees Fahrenheit
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Uncomfortably hot — Over 120 degrees Fahrenheit
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Ease of Use
How easy is it to use this chargers on a daily basis?
Effortless and intuitive — No learning needed
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Very easy to understand — Minimal effort
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Takes a little getting used to — Some adjustment
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Slightly confusing at times — Requires patience
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Frustrating to use — Feels complicated
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Setup Experience
How smooth is the initial setup experience with this chargers?
Instantly ready to use — Plug and charge
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Quick and simple setup — Less than 1 minute
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Setup takes some attention — A few minutes
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Setup feels awkward — Several minutes
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Setup feels annoying — Too many steps
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Design and Visual Appeal
How attractive does the design of this chargers look in everyday environments?
Sleek and modern look — Feels premium
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Clean and stylish design — Looks nice
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Simple and acceptable — Nothing special
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Somewhat unattractive — Feels dated
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Cheap-looking design — Not appealing
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Noise and Comfort
How comfortable is this chargers to use in quiet environments?
Completely silent operation — No noise at all
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Almost silent — Barely noticeable
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Occasionally noticeable — Slight sound
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Clearly noticeable noise — Can be distracting
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Annoyingly loud — Very disruptive
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Pricing and Value
How do you feel about the price of this chargers compared to what it offers?
Supermod 
Moderator 
Recaptor 
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