OKY3402-2
1A Lithium Battery Charging Boost Shield w/ Micro USB Port for D1 Mini
Product Description
Charging, when the battery run out, you do not need to unplug the battery, just using usb port to charging.
- Connect to lithium Battery (normal 3.3-4.2V)
- Charging port (normal 5V)
- Green LED, lights when charging is completed
- Red LED, lights when charging
J1: setting max charging current, 0.5A or 1A.