Description: Capacity: 6600 mAh Voltage: 10.8V (11.1V) Number of cells: 9 Cells technology: Li-Ion Warranty: 12 months Cells manufacturer: Green Cell Colour: Black Overdischarge protection: Yes Overcharge protection: Yes Product code: LE28 Manufacturer: Green Cell Compatibility list: Compatible with following battery models : 57Y4545,42T4757,42T4235,42T4702,42T4703,42T4704,42T4705,42T4706,42T4708,42T4709,42T4710,42T4711,42T4712,42T4713,42T4714,42T4715,42T471O,42T4731,42T4732,42T4733,42T4734,42T4735,42T4736,42T4737,42T4738,42T4739,42T4751,42T4752,42T4753,42T4754,42T4755,42T4756,42T4763,42T4764,42T4765,42T4766,42T4790,42T4791,42T4792,42T4793,42T4794,42T4795,42T4796,42T4797,42T4798,42T4799,42T479O,42T47O2,42T47O3,42T47O4,42T47O5,42T47O6,42T47O8,42T47O9,42T4801,42T4802,42T4803,42T4817,42T4819,42T4848,42T4849,42T4850,42T4851,42T4852,42T485O,42T4883,42T4885,42T4887,42T48O1,42T48O2,42T48O3,42T4911,42T4912,42T4913,42T4921,42T4923,42T4925,42T4927,51J0498,51J0499,51J0500,51JO498,51JO499,51JO5OO,57Y4185,57Y4186 Compatible with following devices : Lenovo ThinkPad SL510,Lenovo ThinkPad T410,Lenovo ThinkPad T410i,Lenovo ThinkPad T420,Lenovo ThinkPad T420i,Lenovo ThinkPad T510,Lenovo ThinkPad T510i,Lenovo ThinkPad T520,Lenovo ThinkPad T520i,Lenovo ThinkPad W510,Lenovo ThinkPad W520,Lenovo Thinkpad Edge,Lenovo ThinkPad Edge,Lenovo ThinkPad L410,Lenovo ThinkPad L412,Lenovo ThinkPad L420,Lenovo ThinkPad L421,Lenovo ThinkPad L510,Lenovo ThinkPad L512,Lenovo ThinkPad L520,Lenovo ThinkPad SL410,Lenovo ThinkPad SL410K,Lenovo ThinkPad SL410k