Max Current : 1A Charge precision : 1.5% Input voltage : 4.5V-5.5V Full charge voltage : 4.2V Led indicator : Red is charging, Green or Blue is full charged Input interface : Micro USB Inversed polarity protection : NO Size : 27 mm X 17 mm
NOTE : This module has extra protection circuit to prevent any damage to battery.
shadabmozaffar (verified owner) –
This module comes handy to add USB Charging solution to 3.7v batteries. Red and Blue LEDs are there to indicate Charging/Charged status. Build quality is good.