Great for 21700
"So many lights are coming with 21700 batteries, but most chargers won't take them, this one handles them with no problem."
Nitecore UM4 Intelligent USB Four-Slot Charger
Brand:Nitecore
MPN:UM4
Buy more save more!
$28.95
- Intelligent charger with 4 battery charging bays for flexible battery management
- Great for users charging multiple batteries for lights and devices
- USB-powered design offers convenient charging for a wide range of battery sizes
- Built for reliable performance at home, work, or while traveling
- Charger Channels: 4
- Compatible Battery Sizes: 10440, 14500, 14650, 16340 / RCR123A, 16500, 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650, 26700, AA, AAA, AAAA, C, D
- Supported Chemistries: IMR, Li-Ion, LiFePO4, Ni-Cd, Ni-MH
$28.95
Recently viewed
Description
Nitecore UM4 Intelligent USB Four-Slot Charger
A New Level of Smart Charging
The Nitecore UM4 Charger is a four-slot smart charger that will quickly charge batteries of varying chemistries and sizes efficiently. With a single slot max output of 1,500mA, it is possible to charge up to 80% of a 3,500mAh battery in 2 hours - you will always have batteries to use that are charged without losing any power to overheating or overcharging. Not to mention, with the four-slots, this charger is able to charge all four batteries independently from each other and you can control the batteries charging modes on the built-in LCD screen. The Nitcore UM4 Charger has a specially optimized charging program for IMR batteries. The program ensures the cut-off voltage is within safe limits and, unlike chargers without these capabilities, the UM4 will extend the lifespan of the batteries.
Other Unique Features
The Nitecore UM4 Charger has several features that are unique to Nitecore and its charging systems. This includes the inclusion of Over-Discharged IMR Battery Restoration and Over-Discharged Li-ion Battery Activations - these features ensure that your batteries will have an extended lifespan and will be in perfect working condition. There is also an Energy Saving Function within the UM4 which makes it go dim and save energy if there is no action to the buttons or batteries in 3 minutes. Plus, the LCD screen displays real-time charging information in order to help you inform and make your own decisions about your batteries quickly and easily. A perfect charger to add to your repetoire if you're looking for a smart charger that will provide you anything you could ever need and more.
Features:- Intelligent USB Four-Slot Charger
- QC 2.0 input available
- Capable of charging 4 batteries simultaneously and controlling each slot independently
- Up to 1,500mA charging speed in a single slot
- Compatible with Li-ion and Ni-MH/Ni-Cd batteries with automatic detection
- Automatic detection of battery power level and automatic selection of the appropriate voltage and charging mode
- Automatic selection between 3 charging modes (CC, CV, and -dV/dt)
- Energy-efficient LCD display for real-time charging information
- Capable of manually selecting the charging cut-off voltage and the charging current
- Automatic termination of large/small capacity batteries and automatic selection of appropriate charging current
- Automatic termination upon charging completion
- Reverse polarity protection and short circuit protection
- Over-discharged battery activation
- Li-ion battery restoration
- Overtime charging protection
- Automatic detection of battery internal resistance and display of battery health
- Made from durable and fire-retardant PC materials
- Optimal heat dissipation design
- Certified by RoHS, CE, FCC, and CEC
Specifications:
- Input - DC 5V/2A 9V/2A 18W (MAX)
- Output - 4.35V±1% / 4.2V±1% / 3.7V±1% / 1.48V±1%
- QC Mode - 1,500mA*1 (MAX), 1,500*2 (MAX), 750mA*4 (MAX)
- Standard Mode - 1,500mA*1 (MAX), 1,000mA*2 (MAX), 500mA*4 (MAX)
- Compatible With:
- IMR/Li-ion/LiFePO4: 10440, 14500, 14650, 16500, 16340 (RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650, 26700
- Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D
- Dimensions - 6.26" x 4.21" x 1.61" (159mm x 107mm x 41mm)
- Weight - 8.21oz (232.8g)
Item Details
| Brand | Nitecore |
| SKU | NITECORE-UM4 |
| Series | UM |
| UPC | 6952506492794 |
| Charger Channels | 4 |
| Compatible Battery Sizes | 10440, 14500, 14650, 16340 / RCR123A, 16500, 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650, 26700, AA, AAA, AAAA, C, D |
| Supported Chemistries | IMR, Li-Ion, LiFePO4, Ni-Cd, Ni-MH |
Specifications
| Charge Rate | 3000 |
| Charger Channels | 4 |
| Compatible Battery Sizes | 10440, 14500, 14650, 16340 / RCR123A, 16500, 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 25500, 26500, 26650, 26700, AA, AAA, AAAA, C, D |
Unit Dimensions
| Length | 6.26 in (159 mm) |
| Width | 4.21 in (107 mm) |
| Height | 1.61 in (41 mm) |
| Weight | 8.21 oz (233 g) |
Certifications & Transport
| Certifications/Standards | CE, CEC, FCC, RoHS |
| Country Of Origin | China |
| HTS Code | 85044030 |
Packaging/Shipping Dimensions
| Length | 7.2 in |
| Width | 6.02 in |
| Height | 1.99 in |
| Shipping Weight | 0.78 lb |
Additional Details
| Warranty | Battery Junction Warranty |
| Return Policy | Return Policy |
Bright Buys
Titanium Innovations CR123A 1600mAh 3V 3A Lithium Primary (LiMnO2) Button Top Photo Battery - Bulk
$1.50
as low as
$1.25
In Stock
- Trusted and reliable; consistently rated as a top customer pick for LED flashlights
- Superior 1,600mAh capacity means longer runtimes and less frequent battery changes
- Optimized for both high and low drain devices
- State-of-the-art automated production lines ensure the highest quality and safety protections
Energizer Industrial EN91 (24PK) AA 1.5V Alkaline Button Top Batteries - Box of 24
$10.95
as low as
$9.65
In Stock
- Ideal for low-drain applications that require a primary battery to provide constant power
- 10-year shelf life - stock up for emergencies!
- The best choice for consistent power, great in low-drain devices like remotes
- Safe and reliable - capable of performing in high or low temperatures
Duracell Duralock DL CR2032 (6PK) 225mAh 3V Lithium (LiMNO2) Watch/Electronic Coin Cell Batteries - 6 Pack Retail Card
$9.00
as low as
$7.60
In Stock
- 225mAh capacity drives long runtimes for watches and electronics
- CR2032 coin cells packed with 3V of power
- Convenient 6-piece retail card provides backup batteries
- Easily replaceable primary lithium cells
- Top recommended battery for Apple AirTags
Titanium Innovations MT11 Survival Tool Card - 11 Tools in One - Black or Silver Stainless Steel
$2.34
as low as
$1.32
In Stock
- 11-in-1 card sized tool fits in your wallet or on a keychain!
- Packed with handy tools including a screwdriver & 7 wrench settings
- Serrated saw and straight-edge knife for quick cutting jobs
- Can + bottle openers for campsite meals or end-of-shift relaxation
Fitorch Lii-M4S 4-Channel Smart Battery Charger for Li-ion, Ni-Cd, & NiMH Batteries
$39.95
In Stock
- Independent 4-slot charging for different batteries
- Touch screen control provides user-friendly operation
- 4 working modes for charging, testing batteries, and more
- Compatible with Li-ion, Ni-Cd, & NiMH batteries
Nitecore QC 3.0 Quick Charge USB Adapter
$9.50
Only 3 Left In Stock
- Quick Charge 3.0 technology enables fast and efficient device charging
- USB compatibility supports a wide range of electronic devices
- Compact adapter design makes it ideal for travel and everyday use
- Intelligent charging management helps optimize power delivery
3-in-1 Universal Charging Cable - with Lightning, Micro-USB, and USB-C
$9.54
In Stock
- Universal cable to consolidate chargers for work, home, or EDC use
- USB-C, Micro-USB, and Lightning plugs for various electronics
- USB-C input with USB-A adapter for use with any USB power source
- 3.93ft long cord, allowing you to use your phone during recharging!
- Premium materials for durability and fast charge speeds
XTAR EDC Universal Flashlight Holster - Fits 24-32mm Diameter and 130-170 Length
$5.94
Only 1 Left In Stock
- Fits flashlights w/ diameter of 24-32mm & length of 130mm-170mm
- Great for EDCs, tactical lights, slim lights, & more!
- Durable and flexible nylon material keeps lights secure
- 33g weight won't drag you down!
Fitorch ER16GT USB-C Rechargeable LED Flashlight - 1350 Lumens - Luminus SFT25 - Includes 1 x 18350 - Black, Green, or Blue
$49.95
In Stock
- Portable powerhouse - emits a 1148ft beam from a 3.4in light!
- Strobe and SOS modes accessible for emergencies
- Dual-fuel power - swap in a CR123A when needed
- Strong magnetic tailcap for hands-free repair jobs
- USB-C port offers seamless recharging from anywhere!
Fitorch EA25 LED Flashlight - Luminus SST70 - 3000 Lumens - Includes 1 x 21700 with Built-in USB-C Charging Port
$74.95
In Stock
- 3,000 lumens and a 250-meter throw - fierce illumination to light up your backyard
- Multiple output modes are accessible via easy side switch operation
- Strobe, SOS, and beacon modes offer distinct signaling capability
- High-capacity battery supports the light with a maximum 227-hour runtime
Reviews
Overall rating: 5.0 / 5 from 4 reviews.
AI Generated Review Summary
Summary topics
Review topics: [].
Review highlights
Reviews
Nitecore delivers
"Fast shipping, You will never go wrong with anything from nitecore."
This Nitecore UM4 charger can accommodate Orbtronic 21700 Protected battery
"I bought this charger specifically to charge a pair of 21700 Battery 5000mAh PROTECTED Button Top Li-ion Rechargeable 3. 7V from Orbtronic. These batteries are too long to fit my existing Nitecore charger."
Very Good Charger
"This charger is all you need to charge 1,2,3 or even 4 batteries at a time. It's Perfect for me. Works Great!!!"
