Rechargeable Battery, Pack of 4 Rechargeable 18650 Battery for Flashlight Bicycle Light Headlamp Torch, 2400mAh Rechargeable 3.7 V 18650 2400mAh li-ion Battery No memory effect, recharge up to 1800 cycles Manufactured by high power capacity products and environmentally friendly 100% quality control of every battery Battery Dimension: 65mm (Height) x 18mm (Diameter)