About this replacement
Designed for IBM, Lenovo devices. Compatible models include ThinkPad X220, ThinkPad X220i, ThinkPad X220s, ThinkPad X230. Replacement part numbers include 0A36281, 0A36282, 0A36283, 42T4861, 42T4862, 42T4863, 42T4865, 42T4866, 42T4867, 42T4875, 42T4876, 42T4901. Key specifications: 11.1V, 4400mAh, Li-ion.