Replacement Lenovo 40Y6999 extended battery by Amstron is designed for use with the Lenovo ThinkPad X60 Series, Thinkpad X60s Series. The LLE-11XT laptop battery is designed to replace Lenovo OEM part numbers: 40Y6999, 40Y7001, 40Y7003, ASM 92P1170, FRU 92P1163, FRU 92P1165, FRU 92P1167, FRU 92P1169, FRU 92P1171, FRU 92P1173, FRU 92P1227. The LLE-11XT is an extended battery that provided double the run time as the standard battery allowing you to work twice as long on a single charge. Amstron brand batteries are high quailty products that you can trust and are backed by a full 1 year warranty.
**NOTE: This Battery is not intended for use with docking station