TP4056 5V 1A Micro USB 18650 Lithium Battery Charger Power Module Charging Board with Protection Integrated Dual Function Li-ion
 
Features:
Charge module- Linear charging.
Current- 1A adjustable.
Charge precision- 1.5%.
Input voltage- 4.5V-5.5V.
Full charge voltage- 4.2V.
Led indicator- red is charging, Green is full charged.
Input interface- micro USB.
Work temperature- -10℃ to +85℃.
Inversed polarity- NO.
Size: 25X19X10mm.
 
NOTE:
1. Ampere meter can only be connected to 5v input end of the module.
2. It is better that the charging current is 37% of the battery capacity. If you charge to the battery of 1000mAH, current of 400 is enough.
3. The connection wire should not be too thick.
4. Make sure the connect point is good.
5. If the input voltage is too high, like 5.2v, the current will be less than 1000mA, it is normal. It is protection function, auto-substract the charging current to avoid burn damage to chip.
6. NO Reversal polarity