USB Charger DC 5V For Li-Ion Battery 3.7V-4.2V Rechargeable Top Battery UK Stock
Safer: prevent reverse connection of battery and output short circuit. Adaptive battery: 1/6/3/4/0, 1/4/5/0/0, 1/8/6/5/0, 2/6/6/5/0. Clear indication: the red light is on when charging, and the green light is on when empty or full.