40y6797 Lenovo Hi Capacity 9 Cell Replacement Battery 41++ for R60/r60e/r61 15.4 Inch Wide Screen/15.4 Inch Standard Screen/r61i 15.4 Wide Screeen/15.4 Inch Standard Screen/r500/sl300/sl400/sl500/t60/t60p/t61 14.1 Inch Standard Screen/15.4 Inch Wide Screen/t500/w500/z60m/z61e/z61m. Does not work on T61 14.1 inch widescreen laptop/does not work on all Z60 or Z61 models
ThinkPad 9 cell Li-Ion Battery for 15 models Up to one-third more capacity than the standard system battery. This high-capacity battery has an extended area on the back edge and fits in the standard ThinkPad T60/Z60m system battery slot. Its design allows it to remain in the system when the system is connected to the ThinkPad Advanced Dock, Advanced Mini-Dock or Essential Port Replicator. Battery life (and recharge times) depends on many factors including screen brightness, applications, features, power management, battery condition and other customer preferences.