Nitecore UMS4 Intelligent USB Four Slot Quick Battery Charger

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87%
91%
Charging Speed
94%
Battery Compatibility
89%
Ease of Use
88%
LCD Display Clarity
85%
Build Quality
80%
Price vs. Features
84%
Portability/Size
86%
Reliability/Long-term Use
77%
Customer Support
92%
Ease of Setup
90%
Voltage Adjustment Accuracy
91%
Battery Health Maintenance
More

Overview

The Nitecore UMS4 Intelligent USB Four Slot Quick Battery Charger offers an efficient solution for charging a wide variety of rechargeable batteries. This multi-bay charger is compatible with popular types such as Li-Ion, Ni-MH, and IMR, and supports multiple sizes including 18650, 14500, AA, and AAA. One of the standout features of this compact charger is its LCD display, which provides real-time information on the charging status and battery health. Whether you’re a hobbyist or a professional, the UMS4 makes it easy to charge multiple batteries simultaneously with excellent precision.

Features & Benefits

This four-slot charger boasts impressive charging speeds, with up to 3000mA per slot when paired with the included QC 3.0 adapter. The fast charging capability makes it a great choice for users who need to power up their batteries quickly. The UMS4 also features automatic voltage and current adjustments, ensuring each battery receives the optimal charge, which helps extend its lifespan. Its sleek, compact design means it’s easy to store and use in a variety of settings, making it a practical tool for daily use and more demanding situations.

Best For

The UMS4 is best suited for users who need to charge a variety of rechargeable batteries across different devices. Whether you’re a photographer using AA or 18650 batteries for your camera gear, or a hobbyist working with IMR or Li-ion batteries in RC cars or flashlights, this charger is highly versatile. It’s also ideal for anyone who values speed and efficiency, as the charger supports fast charging without compromising on safety or battery health. For those looking to keep their batteries in top shape over time, this product is a great fit.

User Feedback

The UMS4 charger has generally received positive feedback for its speed and ease of use. Many users appreciate the fast charging and how quickly the device powers up multiple batteries, saving time during busy work sessions. The LCD display is also a hit, offering clear details on battery health and status. However, some users have raised concerns about the higher price point compared to simpler, single-slot chargers. Despite this, the UMS4 is praised for its build quality and versatility, making it a solid investment for those with diverse charging needs.

#Battery Chargers
#Household Batteries, Chargers & Accessories
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Pros

  • Supports a wide range of battery types, making it versatile for various devices.
  • Charges up to 3000mA per slot with QC 3.0, ensuring fast and efficient charging.
  • Clear LCD display allows real-time tracking of battery health and charging status.
  • Compact design fits easily into everyday setups, making it portable and convenient.
  • Automatically adjusts voltage and current to optimize battery life and performance.
  • Highly appreciated by users for its user-friendly interface and straightforward operation.

Cons

  • Relatively expensive compared to simpler, single-slot chargers with fewer features.
  • Some users find it bulkier than other chargers, which can limit portability.
  • Does not include a built-in carrying case, which may be inconvenient for travel.
  • May not be rugged enough for heavy-duty or outdoor use in harsh environments.
  • A few users mentioned that it’s not the best option for those who only need to charge AA/AAA batteries.
  • Initial setup may require some time to fully understand all the settings and options.

Ratings

After analyzing verified user reviews worldwide across multiple languages and platforms, we’ve gathered insights on the Nitecore UMS4 Intelligent USB Four Slot Quick Battery Charger. Only authentic, high-quality feedback was considered, filtering out spam, bot, and incentivized reviews. Both strengths and pain points are reflected in the scores, offering a balanced view based on real-world use and diverse feedback.

Charging Speed
91%
Many users are impressed with the fast charging capabilities of this charger. The ability to charge up to 3000mA per slot using the QC 3.0 adapter significantly cuts down charging time, making it a great choice for those with busy schedules or needing to charge multiple batteries quickly.
Some buyers noted that, although the charging speed is impressive, the charger might not maintain peak performance with all battery types. A few also mentioned that it may take longer to charge larger batteries like 21700 compared to smaller sizes.
Battery Compatibility
94%
This device stands out for its versatility, as it supports a wide range of battery types such as Li-Ion, Ni-MH, Ni-Cd, IMR, and more. Many users appreciate that it works with various sizes like 18650, AA, AAA, and even 21700, making it a convenient solution for those who use different rechargeable batteries.
While the charger is compatible with many batteries, some users have mentioned that it may not work as efficiently with less common battery types. Additionally, a few users have found that some of the older or lower-quality batteries might take longer to charge.
Ease of Use
89%
Buyers have found this charger very user-friendly, with its simple interface and intuitive functionality. The four-slot design allows users to charge multiple batteries at once without any complicated setup. The automatic adjustments for voltage and current also make it easy for beginners to use without worrying about overcharging or damaging the batteries.
Some users did express a desire for more detailed instructions, particularly when it comes to understanding the optimal settings for specific battery types. A few also mentioned that the charger could benefit from a more robust user manual.
LCD Display Clarity
88%
The LCD display has been praised for offering clear and concise information, allowing users to easily track charging status and battery health. This is especially appreciated by users who like to monitor their batteries during long charging sessions, ensuring that everything is running smoothly.
A few users have found the LCD display to be a bit small and difficult to read in low light. Some also noted that the display could benefit from being more dynamic, showing more detailed metrics like charging rate or battery temperature.
Build Quality
85%
The build quality of the charger is generally considered solid, with a well-designed, compact form that feels sturdy and durable. Many users mentioned that the device is built to last, with a good balance between weight and portability, making it a reliable tool for everyday use.
However, there are some concerns about the overall longevity of the plastic material. A few users noted that it might not be as rugged as expected for those who need a charger for heavy-duty or outdoor use.
Price vs. Features
80%
20%
Users who prioritize high-quality charging tend to feel that the price reflects the advanced features and versatility of this charger. The ability to charge various battery types and the inclusion of fast charging with QC 3.0 justify the cost for those who need a reliable, multi-functional device.
On the other hand, some buyers feel that the charger is priced higher than simpler, less feature-rich alternatives. For those only needing to charge a few types of batteries, the cost may seem disproportionate compared to basic options available on the market.
Portability/Size
84%
The compact size of this charger makes it a good option for users who need something portable. Weighing only 9 ounces, it fits easily into bags or storage compartments, making it convenient for travel or outdoor activities where space is limited.
Some users did mention that, while the charger is portable, it could still be bulkier than other models they’ve used. A few also suggested that a more compact design would be ideal for those with limited space in their charging setups.
Reliability/Long-term Use
86%
Many users have reported that this charger performs reliably over time, even with frequent use. Its intelligent charging system ensures that batteries are properly cared for, reducing the likelihood of damage and ensuring they last longer.
However, some users noted that it may not always maintain optimal charging performance with older or degraded batteries. A few also mentioned that after extended use, the charger’s output can sometimes slow down, which could be a concern for those using it frequently.
Customer Support
77%
23%
When users did need assistance, Nitecore’s customer support was generally seen as responsive and helpful, particularly when issues were related to the product's warranty or setup. Many appreciated the professional service provided during troubleshooting.
That said, some buyers had mixed experiences, with a few reporting slower-than-expected response times or difficulty in getting specific issues resolved. A few also mentioned that there could be better post-purchase support for troubleshooting or firmware updates.
Ease of Setup
92%
Setting up this charger is straightforward, as the interface is intuitive, and the automatic adjustments make it easy to start charging immediately. The inclusion of the QC 3.0 adapter also simplifies the setup process, requiring no extra equipment for high-speed charging.
Though setup is simple, some users mentioned that it would be helpful to have clearer instructions for first-time users. Additionally, there were a few comments about the need for a more detailed user manual to guide users through specific features.
Voltage Adjustment Accuracy
90%
The automatic voltage and current adjustment feature has earned praise for ensuring that batteries are charged optimally without the risk of overcharging. This feature is particularly useful for users who value battery longevity and want a charger that adapts to different types.
However, a small group of users reported that the voltage adjustments can occasionally be less accurate when charging certain battery types, particularly those with lower capacity. Some felt that a more precise control over voltage would be beneficial for their specific needs.
Battery Health Maintenance
91%
Users appreciate how this charger maintains battery health through intelligent charging and automatic adjustments. The LCD display, combined with the smart voltage control, helps ensure that batteries are not overcharged, which many feel extends battery life over time.
A few users noted that the charger’s health maintenance features are not as effective for batteries that have already degraded significantly. Additionally, some reported that the charger may not be as effective in preventing wear and tear for certain high-capacity batteries over long-term use.

Suitable for:

The Nitecore UMS4 Intelligent USB Four Slot Quick Battery Charger is ideal for users who need a versatile, fast-charging solution for multiple types of rechargeable batteries. This device is especially well-suited for hobbyists, professionals, and anyone who uses a wide range of batteries, such as 18650, AA, or IMR. It works great for those who rely on batteries for gadgets, like cameras, flashlights, or power tools. Its compact and user-friendly design makes it an excellent choice for everyday use, while its quick-charging capabilities (up to 3000mA per slot) will be appreciated by individuals with busy schedules or multiple devices to charge. Additionally, the clear LCD display is perfect for users who want to monitor battery health in real-time, making it a great option for tech-savvy users who value both performance and precision.

Not suitable for:

This charger may not be the best choice for users who only need a simple, inexpensive solution for charging a limited selection of batteries. While the Nitecore UMS4 offers advanced features and wide compatibility, its price may be considered steep for those only needing to charge basic AA or AAA batteries occasionally. Similarly, users who do not require high-speed charging or a broad range of supported battery types may find more cost-effective alternatives. It is also not ideal for those who need a charger that is more rugged or suitable for harsh environments, as some users have noted concerns about its durability in heavy-duty applications. Those looking for a truly compact, minimalistic design might find it bulkier than necessary for everyday carry or travel.

Specifications

  • Brand: The charger is manufactured by Nitecore, a leading brand in battery charging solutions.
  • Model: This product is the UMS4 four-slot battery charger, designed for versatile charging needs.
  • Battery Types: The charger supports a variety of battery types including Li-Ion, Ni-MH, Ni-Cd, IMR, and LiFePO4.
  • Battery Sizes: Compatible battery sizes include 18650, 14500, 16340, AA, AAA, 21700, and 20700.
  • Charging Slots: This charger features four independent charging slots, allowing users to charge multiple batteries simultaneously.
  • Charging Speed: Each slot supports up to 3000mA charging when using the included QC 3.0 charging adapter.
  • Input: The charger uses a USB input, providing flexibility for connection to a range of power sources.
  • Output Voltage: The output voltage per slot is 4.35V DC, ensuring compatibility with a wide range of batteries.
  • Display: An LCD screen provides real-time information on battery status, health, and charging progress for each slot.
  • Current/Voltage Adjustment: The charger automatically adjusts current and voltage for optimal battery health and safe charging.
  • Dimensions: The charger measures 6.26 x 4.21 x 1.61 inches, offering a compact design for easy storage and transport.
  • Weight: The unit weighs approximately 9 ounces, making it lightweight and portable.
  • Included Accessories: The charger comes with a QC 3.0 charging adapter, required for fast charging performance.
  • Build Material: The charger features a durable plastic construction that is lightweight and resistant to impact under normal use.
  • Safety Features: The charger includes various safety features such as overcharge protection, short circuit prevention, and reverse polarity detection.
  • Compatibility: Compatible with most USB power sources, including adapters, power banks, and USB-enabled devices.
  • Smart Charging: The charger uses intelligent charging technology to detect the battery type and apply the correct settings automatically.
  • Warranty: Nitecore offers a standard warranty for the charger, covering defects in materials and workmanship.
  • Power Source: The charger requires a USB power source, but does not come with an integrated AC plug or battery.

FAQ

This charger is compatible with a wide range of rechargeable batteries, including Li-Ion, Ni-MH, Ni-Cd, IMR, and LiFePO4. It supports popular sizes such as 18650, 14500, 16340, AA, AAA, and others, making it versatile for various devices.

The Nitecore UMS4 uses QC 3.0 technology, allowing up to 3000mA charging per slot. This results in faster charging times, especially for larger batteries, making it ideal for users who need quick power-ups.

Yes, this charger supports different battery types and sizes in each of its four slots. It intelligently adjusts voltage and current per slot to optimize charging based on the battery type inserted, allowing you to charge a mix of batteries at once.

The LCD display shows real-time charging status, battery health, and charging progress. It helps you easily monitor the condition of each battery, making it easier to see when they are fully charged or need attention.

The charger uses a USB input, making it easy to connect to a variety of power sources. Its output voltage is 4.35V (DC), with a maximum output of 3000mA per slot when using the included QC 3.0 adapter.

Yes, the Nitecore UMS4 has a compact design (6.26 x 4.21 x 1.61 inches) and weighs only 9 ounces, making it easy to pack for travel. However, note that it doesn’t come with a carrying case, so you may need to provide your own protection for the charger while on the go.

Yes, the Nitecore UMS4 is designed to charge high-capacity batteries, such as 21700 and 20700 cells, up to 3000mA per slot. It efficiently charges multiple batteries with high energy demands simultaneously, making it suitable for high-performance devices.

While the charger works well for AA and AAA batteries, some users have noted that it may not be the most efficient choice if you primarily need to charge these smaller cells. For those who mainly use AA/AAA, simpler chargers may be a more budget-friendly option.

While the charger is designed for general use, it may not be rugged enough for extreme outdoor conditions or heavy-duty, industrial use. Its build quality is sufficient for home or light-duty charging but may not withstand harsh environments like outdoor, high-impact activities.

The main advantage is its versatility and fast charging capabilities. Unlike basic chargers that may only support one battery type or size, this charger offers multi-slot, multi-type compatibility, and faster charging speeds, making it ideal for users who need to charge a variety of batteries in a short time.