Lenovo 70+ 57Wh 6-Cell Lithium-Ion Battery for T, W and L Series ThinkPads

The 6-cell ThinkPad Battery 70+ powers your device for the longest possible time. Compatible with the T410/20/30, T510/20/30, W510/20/30, L410/12/20/21/30, L510/12/20/30 systems, the average run time is 57 watt hours. The rechargeable battery utilizes Lithium-Ion technology and works with the ThinkPad External Battery Charger (40Y7625).