10.80V,4400mAh,Li-ion, Replacement Laptop Battery for ACER Aspire 3820, 4553, 4625, 4745, 4820, 5553, 5625, 5745, 5820, 7745, AS3820, AS5745, AS5820, AS7745 Series, ACER Aspire TimelineX 3820, TimelineX 4820, TimelineX 5820, TimelineX AS3820, TimelineX AS4820, TimelineX AS5820 Series, Compatible Part Numbers: AK.006BT.082, AS01B41, AS10B31, AS10B3E, AS10B41, AS10B51, AS10B5E, AS10B61, AS10B6E, AS10B71, AS10B73, AS10B75, AS10B7E, AS10E7E, BT.00603.110, BT.00604.048, BT.00605.061, BT.00605.063, BT.00606.007, BT.00606.009, BT.00607.122, BT.00607.123, BT.00607.124, BT.00607.128, LC.BTP01.029 Voltage: 10.80V ///Capacity: 4400mAh Battery Type: Li-ion///Color: Black Dimension: 269.20 x 47.40 x 24.00 mm///Weight: 376.80 g Product Type: Replacement Battery (Brand New) Condition: New, 1 year warranty!