Feature
1.Chip: TP4056
2.Current: 1A (adjustable)
3.Charge precision: 1.5%
4.Input voltage: 4.5V-5.5V
5.Full charge voltage: 4.2V
6.Led indicator: red is charging
7.Input interface: micro USB
8.Work temperature: -10 Celsius
~ +85 Celsius
9.Inversed polarity: NO
10. Board size : 22.06 mm * 17.13 mm