ThinkPad Battery 25 for Edge Lithium Ion (Li-Ion) - 11.1V DC New Sealed Genuine Original Lenovo ThinkPad 25++ (51J0500) 9-Cell Battery for Lenovo Thinkpad SL410, SL510, Thinkpad Edge 14" and Edge 15". (Caution**: Not for Thinkpad Edge 13"). Not 3rd Party, Original Lenovo Part. 1 Year Warranty (Sold by Phospedia Only). Sealed in Original Box. Not 3rd Party, Original Lenovo Part.