ON THE WAY4 PCS TCR 3.7V Actual 2800mAh Rechargeable Li Ion Battery 18650 Button Top + 2CH 18650 Li-ion Battery Charger Combo + Free Silicone Mobile Phone Stand Holder ON THE WAY4PCS White Rechargeable 3.7v ACTUAL 2800 mAh 18650 Li-ion Batteries with 1Pc 18650 Battery Dual Charger High power rechargeable Li-ion battery 3.7V Protected 18650 2800mAh with no memory effect, can be charged everytime you like AC110-240V battery charger for 18650 3.7v rechargeable batteries can charge 1 or 2 batteries at a time. With indication light for charging status Battery cycle life: &gt; 500 cycles, please note these are a little longer than non-protection 18650 batteries. Applications: Flashlights, Headlamp, lighting or other device that needs 3.7v power, building portable power device needing high energy density and low weight and more!