Mini Butterball 2pcs 18650 2800mAh 3.7V Li-ion Rechargeable Red Batteries + 1pc Wireless Charger for Led Flashlight Headlamp Laser Camera 2PCS 18650 3.7V 2800mAh Li-ion rechargeable battery with a battery charger. Low discharge rate, no memory effect. High energy and long lifetime battery. Short-circuit and over current protection & environment friendly. Suitable for flashlight torch , laser pointer, as emergency lighting and other portable devices. Note: it is button top battery, will not suitable for some device which use flat top battery