ON THE WAY&reg;6Pcs 3.7V 14500 1200mAh Rechargable Li-Ion Batteries with Charger 1200mAh 14500 Li-ion Rechargeable Battery It is made of high quality and durable material Li-Ion Rechargeable 14500 with IC Protection Warm tips:Before purchase, please make sure the battery voltage corresponds with your device voltage Voltage: 3.7V, no memory effect