CWK&reg; New Replacement Laptop Notebook Battery for Acer AS10D61 AS10D71 AS10D51 AS10D31 Acer eMachines E440 E640G E730G G730G G640G AS10D51 AS10D71 Acer Aspire AS10D31 4741 4743G 5551 5552 5742 7741 7551 USA 7750 AS5741 7741Z 7552G 5742Z 5741G 5552G 5551G 5336 5741G 5742G 5742ZG 5742Z 7750G 7750 4741 AS10D51 AS10D3E 5741G 5736Z 5750 5251 5551G AS10D41 AS10D31 AS10D61 5741G 4740 5741Z 5750G 4771G 5551 AS10D31 5741 5736 5733 5742 5750 5755 5742 AS10D31 AS10D3E Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!