NEW 9-Cell Dell LBD0461 Battery rated at 11.1V, 73WHR, 6600mAh. Replacement li-ion battery is guaranteed to meet or exceed original Dell LBD0461 battery specifications. 9-Cell battery will hold a 50% longer charge than original Dell 53WHR 6-Cell batteries. These are quality made laptop batteries manufactured with premium lithium cells. Li-ion batteries do not suffer from the memory effect. They generally last between 300-500 charge/discharge cycles.