18650 charger wall Li-on Charger for 18650 Rechargeable Battery (1 Slot with folding flat plug pin) Wall Li-ion Charger for 18650 Battery Black Input : AC100-240V 50/60Hz 500mAmax Output: DC 4.2V 500mA Quick charge with automatic constant current control prevents battery from overcharging, short circuit, and electronic shock Flat plug pins folding design, easily for carrying