ON THE WAY&reg;4 Pieces 1 Pack 2000mAh Rechargeable 14500 3.7v Battery + Dual Battery Chargers Capacity: 2000 mAh; Voltage: 3.7V Recharge: up to 1000 cycles Protective circuit inside: protect from overcharging Suit for Flashlight, Photo camera, Toys 14500 3.7V 2000mAh rechargeable batteries, 4 pieces a pack