This is a generic, equivalent one, 100% compatible. This 11.1V 63Wh Replacement battery is designed to compatible with Lenovo 42Y4864 42T4865 45N1019 42T4866 0A36305.

Specifications:
* Product Type: generic/equivalent
* Battery Voltage: 11.1V
* Battery Capacity: 63Wh /6 Cell
* Chemistry: Li-ion
* Color: black
* Recharge cycles: 500
* Operation time: Around 1.5-3hours
* Certification: CE FCC RoHS
* Condition: new, 1 Year Warranty!
* No memory effect, Over-charge protection, Over-discharge protection.
* Over-heat protection, Over-current protection, Short-circuit protection.

Compatible Part Numbers:
0A36306, 45N1023, 45N1022, 0A36307, 45N1027, 45N1026,
44+, 0A36281, 42T4867, 0A36282, 42T4875, 0A36283,
42T4876, 42T4861, 42T4901, 42T4862, 42T4902, 42T4863,
42Y4864, 42T4865, 45N1019, 42T4866, 0A36305,

Compatible with the following Lenovo notebook models:
ThinkPad X220 Series, ThinkPad X220i Series
ThinkPad X230 Series, ThinkPad X230i Series

NOTE：Please check the model number before you place order! Our compatible model list is not complete,if you can not find your laptop model in it please contact us.