18650 Battery Charger, Suitable for 3.7v Lithium Batteries 20700 10440 14500 18500 16340 17500 18650, USB Single Slot Rechargeable Li-ion Battery Charger (Battery not Included)

Made from durable ABS (fire retardant) Automatically stops charging when complete Features over-charge prevention and temperature monitoring to protect batteries Features reverse polarity protection Work length is adjustable for more battery sizes Reasonable heat sink design to ensure fast charging without overheating