Lenovo TP Battery 55+ L412, L512, L420, L520, T410, T420, T510, T520, W510, W520 Li-Ion 6Cell

The ThinkPad Battery 55+ (6 Cell) (57Y4185) features:
Lithium-Ion (Li-Ion) technology
Six-cell, rechargeable system battery, 57Wh
Standard system battery specifications
Over-discharge protection
Approximate height: 20 mm (0.8 in)
Approximate width: 206 mm (8.2 in)
Approximate depth: 56 mm (2.2 in)
Weight: 340 g (0.75 lb)
Hardware compatibility
Systems Machine Type - Models
ThinkPad L412, L512,L420,L520 - All
ThinkPad T410, T510,T420,T520 - All
ThinkPad W510,W520 - All