The Nitecore UM20 is a USB management and charging system that can power li-ion batteries and external devices simultaneously. Compatible with all Nitecore li-ion/IMR batteries, the smart system automatically applies the proper charging current based on battery type and stops when charging is complete. It features a high definition LCD display, a rear USB cable winder, and two charging ports. You can effectively manage your time with the built-in ability to prioritize either the battery charger or USB output port.
Input voltage: micro USB DC 5V
Output voltage: 4.2V ±1% / 5V
Output current: 1000mA / 500mA
Compatible with: Li-ion / IMR: 18650, 18490, 18350, 17670, 17500, 16340(RCR123), 14500, 10440
Dimensions: 3.94 in x 2.2 in x 1.38 in