Briday 18650 Li-ion 3.7V Rechargeable Battery & Battery Charger RECHARGEABLE 3.7 V 18650 li-ion Battery. Manufactured by high power capacity products and Environmentally friendly etc.. The charger can charge 18650/16340/14500/10440 ect. No memory effect, recharge up to 10000 cycles. Compatible with:Battery appliances such as Headlamp, Flashlight,Emergency lighting, portable devices.etc