2.  Part No.: RCR4;
3.  Input: DC 5.0V---2.0A;
4.  Output: 4.20V---0.35A(For Li-ion Rechargeable Battery Only)
5.  Compatible with:
Li-ion Rechargeable Batteries:
10280/10370/14280/1 5270/16280/16340/18350/RCR2/RCR123A
6.  Track charging status via the indicator lights:
     Charging: Red
     Full Charged: Green
     One LED--- 6%-25%
     Two LED--- 26%-50%
     Three LED--- 51%-75%
     Four LED--- 76%-100%
7.  Charged by USB power adaptor, laptop, power bank, etc;
8.  Designed by Keeppower, Assembled in China. 

● Please use a standard DC 5V/2A adapter, using an incompatible adapter may result in lower charging current.
● Do not use any wall adapter with a voltage over 5.5V, as it may damage the charger.
● Do not charge any damaged batteries, ind uding those with defective appearances, internal short clrcuits, or severe over-discharge.
● Keep the charger dry at all times.
● If the charger is damaged, discontinue using immediately.
● Use for rechargeable li-ion battery only.