Fancy Buying Battery for ThinkPad T500 W500 Z60M Z61M Z61P Z60 Z61E SL500 SL400 SL300 P/N's: 40Y6795 92P1141 92P1141 92P1137(ONLY for Laptops of 14.1" & 15.0" standard screens and 15.4" widescreen)

hi this is Sarah Dubois with laptop battery express this nine cell IBM battery is rated at 7800 milliamp hours or 87 watt hours and will give you about three to five hours of runtime depending on your energy use the mah or milliamp hour and the whr or wat our indicates how long a battery will run on a charge the higher the milliamp hour and wat our number the longer the battery will run all of our batteries are brand new with Samsung Power Cells a Texas Instruments computer chip and are never used or refurbished if you're finding less expensive batteries on line please be aware that it's because they use cheap quality power cells inside the cartridge that can easily wear out in six months our batteries typically have a service life of three to five years all batteries from laptop battery Express come with a 30 day money back gaurantee and a full 12 month warranty all of our batteries sh