Acer AP12A3i Aspire M3 M5 M3-581TG M5-481TG TravelMate P645M Battery - Compatible Part Numbers: AP12A3i, AP12A4i, AP12A31, AP12A41, BT.00304.011, KT.00303.002  - Battery Type: Li-ion, Battery Volt: 11.1V, Capacity: 4850mAh 54Wh, Battery Color: Black, Cond