11.1V 18650 Li-ion Battery Packs with 4,400mAh Capacity Features and benefits:High quality 11. ... 1V, 4,400mAh Li-ion rechargeable battery pack with Universal connectorMade of six 2,200mAh cylindrical 18650 ... life than Ni-MH batteryBuilt-in IC chip will prevent battery pack from over charge and over discharge and prolongs ... off voltage: 9V 11.1V 18650 4,400mAh Li-ion Battery Packs