4 Slots AC 110V/220V 18650 Battery Charger for 3.7V Rechargeable Lithium 10440 14500 16340 16650 14650 18350 18500 Batteries. Battery are not included. Product Name: 18650 Charger. Features: 1/2/4 slots independent charging. Product weight: 35/70/106 grams. Power supply mode: regular USB power supply. Input voltage: DC 5V 1-2A. Output voltage: DC 4.2V 1000mA. Product size: 90*30*122mm. Compatible battery model: 10440 14500 16340 16650 14650 18350 18500 18650. Six protections: overcharge protection, overcurrent protection, over temperature protection, short circuit protection, reverse connection protection, over discharge protection