... for Acer Aspire 5520 AS07B31 Detailed Description:1. 11.1v li-ion battery Laptop Battery for Acer Aspire ... 5520 AS07B31 2. Voltage: 11.1V3. Capacity: 4400mAh4. Cell: 65.Battery type: Li ... 7'',8'',8.9'',10'',10.1'',10.2'',11.1''.....15.6'',16'',16.4'',17'',17.1 ... ...... 3). Backlight technologies: LED, 1 CCFL, 2 CCFL 11.1v li-ion battery Laptop Battery for Acer Aspire 5520 ...