CSEXCEL Laptop Battery for Acer Aspire One D255 D257 D260 D270 E100 360 522 722 Al10a31 Al10b31 Al10bw Al10g31 AOD255 AOD257 AOD260 Notebook Battery Grade A cells ensure fast charges and low power consumption; FCC / CE / RoHS Certified, Built-in circuit protection ensures both safety and stability. Battery type: Li-ion; Capacity: 4400mAh; Cells: 6-cell; Voltage:11.1V. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Replacement Laptop Battery is Rechargeable for Repeat Use and Every Single Lithium Battery Charging More Than 800 Times Operation time for standard batteries(6-cell, 4400mah): Around 4 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. 24 x 7 email support, 12-month hassle-free warrant