ThinkPad Battery 70+ (6 cell) and ThinkPad Battery 70
These rechargeable batteries use Lithium-Ion technology and can be used as replacement for aging system batteries or as a convenient spare battery. The ThinkPad Battery 70+ (6 cell) (0A36302) features: Lithium-Ion (Li-Ion) technology. 6 cell system battery. Battery energy (Watt-hours): 57Wh.