2A 4.2V DIY Battery Charger Module Board for Racing Drone

Specification:
Item name: battery charge module
Current: 2A
Output: 1S (4.2V)
Input: DC 4-20V
Size: 18.5mm*18.5mm
Whole thickness: 4.6mm
Weight: 2.44g

Feature:
-Generate low heat and high efficiency
-Have overheat protection, LED automatically turn off when fully charge

Package included:
1* battery charge module board