CWK New Replacement Laptop Notebook Battery for Acer Aspire UM09E70 UM09E71 UM09E78 Acer Aspire One 521 521h AO521 AO521 752 752h 1500 1520 1610 1620 Acer Aspire One 752 752H 521 521h AO521h UM09E56 UM09E70 UM09E75 Gateway EC1433u EC1458u EC1437u EC14D07u EC1417h EC1409u ZH7 EC1803U EC1805U Gateway ZH7 EC1437u EC14D07u EC1417h EC1409u EC1440u EC1454 EC1454u EC1455u EC1433u EC1458u ZH7 UM09E36 Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 10.8 Volt (11.1 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!