About this replacement
Designed for Texas Instruments, IBM, Acer devices. Compatible models include Extensa 610, Extensa 610CD, Extensa 610CDT, Extensa 616CDS, Extensa 616CDT, Thinkpad 310, Thinkpad 310D, Thinkpad 310E, Thinkpad 310ED, Thinkpad 315, Thinkpad 315E, AcerNote 370. Replacement part numbers include BTP-X31, BTP-W31, 60.46914.051, 91.46928.010, 91.48428.051, 60.46914.061, 11J8604, 11J8639, ASM11J8645. Key specifications: 10.8V, 4000mAh, Ni-MH.