Stay unplugged longer with ThinkPad batteries. Providing 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 system battery slot. Its compatible design allows it to be in a system connected to the ThinkPad Advanced Dock, Advanced Mini-Dock, and Essential Port Replicator. Battery life and recharge times vary based on many factors including screen brightness, applications, features, power management, battery conditioning, and other customer preferences. (For battery life, go to lenovo.com/alldaycomputing)
Compatible with T/R/W500, T60/61 14S/15W, SL400/500.