Efest Slim K2 USB Battery Charger

Efest Slim K2 USB Battery Charger is a dual slot lithium Ion battery charger with micro USB input. The Slim K2 charges compatible battery cells at 1A and each slot is monitored independently to provide the most efficient charge. An LED indicator light also lets you know when the battery is charging and when it’s fully charged.
It is an intelligent battery charger with safety features including: reverse polarity, short circuit, overcharge protection and many more.
Note: a 2A USB port is recommended.
Efest Slim K2 USB Battery Charger Specifications:
Two-bay charger can charge up to two batteries simultaneously
Compatible with many battery sizes, including 18650, 20700, 21700 & 26650
Charging speed: 2 x 1A, 1 x 1A
Automatically stops charging
Reverse polarity protection
Input: Micro USB DC 5V 2A
Output: DC 4.20V±0.05V 1A*2/1A*1
Package includes:
EFest Slim K2 USB Battery Charger
Micro USB cable
User manual