ATC Extended Battery Replacement for Acer Aspire series 2930 Series 4310 Series 4520 Series 4530 Series 4710 Series 4720 Series 4730 Series 4920 Series 4930 Series 5735 Series 5740 Series Emachine D725 (6-Cell Equivalent) Replace PN:ACER AS07A31 AS07A32 AS07A41 AS07A42 AS07A51 AS07A52 AS07A71 AS07A72 BT.00603.036 BT.00604.015 BT.00604.022 BT.00605.018 BT.00607.012 BT.00607.013 BTP-AS4520G MS2219 MS2220 Z01 Z03 [11.1V 5200mAh] Rating : 11.1V ~ 4400mAh (6 cells) Condition: 100% New Rechargeable Li-ion Battery