Nitecore UM20 2 bay USB charger


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The UM20 Charger is a USB powered Li-ion Battery charger capable of charging up to two 18650 batteries simultaniously. It aslo featrues a USB passthrough to allow you to charge a device at the same time as your Li-ion batteries. 

Tech Specs:

Input: Micro USB DC 5V


Output voltage: 4.2V ±1% 

Output current: 1000mA / 500mA


USB Management

and Charging System

Power Li-ion batteries and an external device simultaneously

USB charging input and output

Intelligent charging program

LCD display presents charging status

Fire retardant materials

Insured worldwide


Integrated Li-ion batteries charging  program

Intelligent CC/CV charging

Automatically stops charging upon charging completion

Activates OV batteries

Reverse polarity protection

Spring loaded slider designed to accommodate batteries of different sizes.

Adjusts charging power based on detected battery capacities


Compatible with Li-ion/IMR



High Definition LCD displays real time charging status

Display battery power levels

Display charging progress accurate to 1%


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