Lenovo ThinkPad Battery, 40Y7003, 40Y6797, 40Y6799

Stay unplugged longer. Get twice the capacity of the 4-cell system battery and up to 7.9 hours1 of battery life on select systems. This high capacity battery has an extended area on the back edge and fits in the standard ThinkPad X60 Series system battery slot. Its compatible design allows it to be in the system when the system is connected to the optional ThinkPad X6 UltraBase. All-day computing is a reality ( up to 10.5 hours( 1) ) on select systems when you combine the ThinkPad X60 Series 8 Cell High Capacity Battery with the optional ThinkPad X60 Series Extended Life Battery ( 40Y7005) , or up to 10.0 hours( 1) with the ThinkPad Advanced Ultrabay Battery ( 40Y6789) in the ThinkPad X6 UltraBase. ( Note: The Extended Life battery cannot be used in or with the ThinkPad X6 UltraBase.) ( For battery life, go to lenovo.com/ alldaycomputing)