See the Nitecore UM4 USB Battery Charger. This smart four-slot charger can charge 4 batteries simultaneously with control for each individual slot, independently. It features automatic detection of battery power levels and can automatically select the best voltage and charge mode.
 
It has 3 different charging modes (CV, CC and -dV/dt). The charging parameters can be set to manual mode, so you can select and meet your own charging preferences.
 
The UM4 charger is simple to use.
 
It is compatible with 3.6V / 3.7V Li-ion rechargeable batteries, 3.8V Li-ion rechargeable batteries, 1.2V Ni-MH / Ni-Cd rechargeable batteries & 3.2V LiFePO4 batteries.
 
Numerous safety precautions are included to ensure safety. Some of these include automatic battery internal resistance detection, reverse polarity protection, anti-short circuit protection and over-time charge protection.
 
Features:
Capacity: Four Slots (4 Battery Bays)
Intelligent, Adaptable & Smart Technologies Inbuilt
Charging Speed: 1500mA (In A Single Slot)
Input: DC 5V / 2A V / 2A 18W (Max)
Output: 4.35V±1% / 4.2V±1% / 3.7V±1% / 1.48V±1%
QC Mode: 1500mA*1 (Max), 1500mA*2 (Max), 750mA*4 (Max)
Standard Mode: 1000mA*1 (Max), 1000mA*2 (Max), 500mA*4 (Max)
QC 2.0 Input Available
Can Charge 4 Batteries Simultaneously
Can Control Each Battery Slot Independently
Compatible Battery Types: Li-ion & NiMH/Ni-Cd Batteries
Automatic Detection Of Battery Power Levels
Automatic Selection Of Best Voltage And Charge Mode
Automated Selection Between 3 Charge Modes (CV, CC & -dV/dt)
LCD Display (Real Time Charging Information)
Energy Efficient
Capable Of Manual Selection Of Charge Cut-Off Voltage & Charge Current
Automatic Detection Of Small / Large Capacity Batteries & Automatic Selection Of Best Charging Current
Automatic Termination When Charging Is Complete
Reverse Polarity Protection
Short-Circuit Protection
Over-Time Charging Protection
Over-Discharged Battery Activation
Li-ion Battery Restoration
Automatic Detection Of Battery Internal Resistance And Displays Battery Health
Construction Materials: Durable & Fire-Retardant PC Materials
Optimised Heat Dissipation Design
Weight: 255.4g
Dimensions: 6.26" x 4.21" x 1.61"
 
Compatible Batteries:
 
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
 
Included:
1 Nitecore UM4 Battery Charger
1 USB Cable
1 User Manual