Lenovo 45N1760 45N1761 ThinkPad E550 E550C E555 E560 48Wh 76+ Battery -  Compatible Part Numbers: 45N1760, 45N1761  - Battery Type: Li-ion, Battery Volt: 10.8V, Capacity: 48Wh, Battery Color: Black, Condition: 100% New, Warranty: 12 months