Nitecore UMS2 Intelligent Dual-Slot USB-C Battery Charger

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87%
91%
Charging Speed
89%
Portability & Size
85%
Display Readability
87%
Battery Compatibility
90%
Build Quality
88%
Ease of Use
92%
Value for Money
86%
Setup & Convenience
84%
Organizational Features
89%
Charging Reliability
86%
Product Longevity
78%
Customer Support Experience
More

Overview

The Nitecore UMS2 Intelligent Dual-Slot USB-C Battery Charger offers a versatile charging solution for a wide range of rechargeable batteries. With a dual-slot design, it can charge two batteries simultaneously, supporting types like Li-ion, Ni-MH, and more. The charger’s USB-C compatibility allows for faster charging, reducing wait times for users on the go. Its compact, travel-friendly design makes it an ideal choice for everyday carry (EDC), and it even comes with an organizer to keep your gear neatly stored and ready to use.

Features & Benefits

This dual-slot charger delivers impressive charging performance with a maximum output of 4000mA across both slots. Each slot can individually charge at 1000mA when connected to a standard USB power source. The built-in LCD display provides real-time updates on battery health, charging status, and mode, allowing for easy monitoring. Additionally, the charger automatically adjusts the current and voltage, offering enhanced safety by protecting the batteries from overcharging. Its broad compatibility with various battery types makes it a versatile option for different devices.

Best For

The Nitecore UMS2 charger is perfect for anyone who frequently uses rechargeable batteries in devices like flashlights, cameras, or other gear requiring consistent power. It’s also an excellent choice for travelers needing a compact and efficient charger that won’t take up too much space in their bag. Whether you’re looking for an all-in-one charging solution or need something portable for everyday carry, this charger checks all the boxes. It’s designed to accommodate a variety of battery sizes, making it highly adaptable for multiple uses.

User Feedback

Many users praise the Nitecore UMS2 for its fast charging and reliable performance, especially when dealing with high-demand devices. The LCD display is frequently mentioned as a favorite feature, providing clear insights into the battery's status and health. However, some users report minor issues with compatibility when using very high-capacity batteries, which may require more power than the charger can supply. Despite this, the compact size and portability remain top-selling points, making it an appealing choice for those in need of an efficient and portable charging solution.

#Battery Chargers
#Household Batteries, Chargers & Accessories
#Electronics

Pros

  • This charger offers fast charging with USB-C, making it ideal for quick power-ups during travel or outdoor activities.
  • The compact size and lightweight design make it perfect for everyday carry (EDC), fitting easily into bags or gear kits.
  • Users appreciate the LCD display, which provides real-time monitoring of battery health and charging status.
  • It supports a wide range of battery types, including Li-ion, Ni-MH, AA, AAA, and more, offering great versatility.
  • The included organizer makes it easy to keep the charger and cables neatly stored and ready to go.
  • With a maximum output of 4000mA, this charger provides efficient power delivery for both slots simultaneously.

Cons

  • Some users report that the charger has difficulty fully charging high-capacity batteries, limiting its effectiveness for specific power needs.
  • The compact design, while convenient, may feel a bit too small for those who require a more robust or heavy-duty charging solution.
  • A few buyers note that the charger could benefit from more durable construction for rougher outdoor environments.
  • The charger lacks advanced features like customizable charging speeds, which might be a drawback for more experienced users.
  • Certain high-capacity batteries don't charge as efficiently, which could be problematic for users with larger battery setups.
  • While portable, the charger’s performance is more suited for everyday use rather than intense, frequent charging sessions.

Ratings

After analyzing verified user feedback from multiple global platforms and languages, the Nitecore UMS2 Intelligent Dual-Slot USB-C Battery Charger has received a balanced mix of praise and critique. All spam, bot, and incentivized reviews have been filtered out to ensure only authentic, high-quality user insights inform these scores. Both strengths and areas for improvement are reflected in the ratings, providing a comprehensive view of this charger’s performance and value.

Charging Speed
91%
Users are highly satisfied with the fast charging capabilities of this device, particularly the 4000mA total output across two slots. Many reviewers report that their batteries charge quickly and efficiently, which is a huge benefit for those who need reliable power on-the-go.
A few users note that while the charging speed is impressive, it may not be as fast as some high-end models when dealing with larger batteries or under full load. Some also wish for more customization options in charging speeds for specific needs.
Portability & Size
89%
The compact size of this dual-slot charger makes it an ideal companion for travel. Many buyers love how lightweight and easy to carry it is, fitting perfectly in backpacks or even pockets. Its design is especially appreciated by everyday carry enthusiasts.
Though portable, a few users have pointed out that the charger might be slightly larger than some other compact models, making it less convenient for those with extremely limited space in their carry bags or pockets.
Display Readability
85%
The LCD display has received positive feedback for providing clear, real-time updates on battery health and charging status. Users find it especially useful for monitoring the progress of their batteries, making it easier to manage multiple devices at once.
Some users mention that the display can be difficult to read in bright lighting conditions. A few also wish for a larger or higher contrast screen for better visibility, especially when using it outdoors or in dimly lit environments.
Battery Compatibility
87%
This charger supports a wide range of battery types, including Li-ion, Ni-MH, and AA/AAA, which makes it versatile for various gadgets like flashlights, cameras, and other rechargeable devices. Many reviewers appreciate the flexibility it offers for different charging needs.
However, some users have reported compatibility issues with certain high-capacity or unusual battery sizes, noting that the charger may not fully support the latest battery models or larger formats, which can be a limitation for advanced users.
Build Quality
90%
Reviewers are consistently impressed with the build quality, highlighting the sturdy, durable materials that give the charger a reliable feel. The design feels well-crafted and built to last, which is important for long-term use in various environments.
A few users feel that while the build is solid, it could be a bit more robust in terms of shock resistance. Some mentioned concerns about the device being vulnerable to damage if dropped or subjected to rough handling during travel.
Ease of Use
88%
The charger is user-friendly with simple plug-and-play functionality. Many customers appreciate how easy it is to operate, without needing to deal with complicated settings or instructions. This ease of use is a major selling point for those who want a hassle-free charging experience.
On the downside, a few users felt that the lack of advanced features, like adjustable charging speeds, might be a downside for more tech-savvy users looking for greater control over their charging processes.
Value for Money
92%
This charger offers a lot of value for the price, especially with its versatile compatibility and fast charging capabilities. Many buyers feel they are getting a premium product at a reasonable cost, particularly for those needing a compact, reliable charger for everyday use.
Some users feel that while the charger is reasonably priced, it could still be slightly cheaper given its limited feature set compared to more expensive models. A few also mentioned that they would appreciate even more functionality for the price.
Setup & Convenience
86%
The setup is straightforward and quick, with minimal steps involved. Users often highlight how convenient it is to get started right away without facing any complicated configurations, making it an ideal choice for those new to battery chargers.
Some users have reported that while the setup is simple, the included cables could be longer to accommodate charging needs in more varied setups. A few also feel that the charger lacks some features that would improve overall convenience, like multiple charging modes.
Organizational Features
84%
The inclusion of an organizer is highly appreciated, as it helps keep cables and small accessories tidy. This feature makes it easy to pack the charger and all its components together for travel or storage.
However, a few users mentioned that the organizer is a bit basic, and doesn't offer as much space or compartments as they would like. Some felt that a more robust storage solution would better complement the charger's overall quality.
Charging Reliability
89%
Many users mention that the charging process is reliable, with minimal issues such as overheating or slow charging. This consistency is important for users who rely on this device for daily use, especially when charging multiple devices at once.
A small number of users have experienced occasional issues with the charger not detecting certain batteries or taking longer than expected to charge, which can be frustrating during urgent usage scenarios.
Product Longevity
86%
Several customers have reported using the charger for months without any noticeable decline in performance. Its longevity is seen as a major advantage, especially for those who need a long-term solution for battery management.
On the other hand, some buyers have expressed concerns about the charger’s longevity, particularly when used with high-capacity batteries, as it may start to show signs of wear or overheating after prolonged use.
Customer Support Experience
78%
22%
A few users had positive experiences with Nitecore's customer service, especially in cases of minor troubleshooting. Support is generally helpful and responsive when contacted directly about issues.
However, there are complaints about slow response times and inadequate solutions for certain problems. A few customers felt that the support could be more efficient in addressing technical concerns or offering helpful troubleshooting advice.

Suitable for:

The Nitecore UMS2 Intelligent Dual-Slot USB-C Battery Charger is ideal for users who require a compact and versatile charging solution for a variety of battery types. This charger’s fast USB-C charging capability and ability to handle multiple battery formats (such as Li-ion, Ni-MH, AA, AAA) make it especially useful for travelers, outdoor enthusiasts, and people who rely on rechargeable batteries for devices like flashlights, cameras, and other portable gadgets. The compact, lightweight design is perfect for everyday carry (EDC), making it a top choice for those who need a reliable and portable charger for frequent use. Additionally, the clear LCD display for real-time battery monitoring adds significant convenience, which is appreciated by users who need to track the status of their devices on the go.

Not suitable for:

However, the Nitecore UMS2 may not be the best choice for users who primarily need to charge high-capacity or specialty batteries that are outside of the charger’s compatibility range. Some users have reported issues with certain larger or high-capacity batteries, which may not be fully supported or charge optimally. Additionally, while the compact design is convenient, those who need a charger for larger setups or want more advanced features, such as customizable charging speeds, may find this model limiting. Furthermore, users who need a more robust shock-resistant charger for heavy-duty, rough environments might find this unit’s durability lacking, as it doesn’t offer extensive protection against drops or harsh conditions.

Specifications

  • Slots: Dual-slot charger capable of charging two batteries simultaneously.
  • Input: USB-C input for faster and more efficient charging.
  • Max Output: Maximum combined output of 4000mA for both slots.
  • Charging Current: Provides a 1000mA current per slot (5V/2A) for optimal charging.
  • Battery Compatibility: Compatible with Li-ion, Ni-MH, Ni-Cd, and IMR batteries.
  • Battery Sizes: Supports a variety of battery sizes, including 16340, 14500, 18650, 21700, 20700, AA, and AAA.
  • LCD Display: Features an LCD display to show battery health, charging status, and mode.
  • Automatic Voltage/Current Selection: Automatically selects the appropriate voltage and current for the battery being charged.
  • Dimensions: Compact size of 5.98 x 2.87 x 1.57 inches for portability.
  • Weight: Weighs 5.6 ounces, making it lightweight and easy to carry.
  • Organizer: Includes an organizer for convenient storage and transport of the charger and cables.
  • Output Voltage: Delivers an output voltage of 4.35V for efficient charging.
  • Charging Efficiency: Supports fast charging with USB-C, ensuring quicker battery recharge times.
  • Portability: Designed with portability in mind, ideal for travel and everyday carry (EDC).
  • Safety Features: Includes built-in safety features to prevent overcharging, overheating, and short circuits.
  • Charging Mode: Supports multiple charging modes for different battery types, ensuring safe operation.
  • Warranty: Comes with a manufacturer warranty to cover potential defects.
  • Brand: Manufactured by Nitecore, known for reliable and high-quality charging equipment.
  • Design: Sleek, compact design optimized for space-saving and easy portability.

FAQ

This device is a dual-slot charger designed to recharge various rechargeable battery types, including Li-ion, Ni-MH, AA, and AAA. It offers fast charging with USB-C input, making it ideal for users who need a compact and portable charger for their batteries, whether at home or on the go.

The Nitecore UMS2 charger can deliver a maximum output of 4000mA for both slots combined, which ensures fast charging. Each slot can charge at up to 1000mA, depending on the battery type and capacity, making it efficient for a variety of rechargeable batteries.

Yes, this charger supports multiple battery types, including Li-ion, Ni-MH, Ni-Cd, and IMR batteries. It is compatible with sizes such as 16340, 14500, 18650, 21700, 20700, AA, and AAA, offering versatility for many common rechargeable batteries.

While the charger works well with most rechargeable batteries, some users have reported issues when using it with high-capacity batteries. It might not charge them as efficiently as other dedicated chargers designed for such capacities.

This charger features an LCD display that shows real-time information about the battery's health, status, and current charging mode. It updates as the battery charges, providing useful insights into the progress of the charge.

Yes, the Nitecore UMS2 is designed with portability in mind. Its compact size (5.98 x 2.87 x 1.57 inches) and lightweight construction (only 5.6 ounces) make it easy to carry, and it includes an organizer for neat storage, making it a great option for travelers.

Yes, the charger automatically selects the appropriate charging current and voltage based on the battery type. This feature helps protect your batteries from overcharging or potential damage, ensuring safe and efficient charging.

Yes, the Nitecore UMS2 allows you to charge two different batteries simultaneously. However, it is important to ensure that both batteries are within the supported types and sizes for proper charging.

The organizer is a convenient accessory that helps keep the charger and cables organized for easy storage and transport. It ensures that everything stays in place, making it ideal for on-the-go use and minimizing the chances of losing small accessories.

While the charger is compact and portable, some users have noted that it might not be as durable as other models for heavy-duty or rough outdoor use. For frequent, harsh conditions, a more robust charger might be a better option.