Coolgo New Laptop Battery for ACER Aspire One D260E E100 One 522 AO522 d257 P0VE6 PAV70 722 black - 18 Months Warranty [li-ion 6-cell 5200MAH 11.1V] Choose high quality 6 Cells 11.1V 5200mAh black and new lithium-ion cells, safe and reliable, stable performance which can charge-discharge more than 500-800 cycles. Quality Certication: All the products pass the ISO9001, CE and ROHS, FCC multiple international authentication and completely accord with environmental protection requirement. Consummate Design: Excellent design makes the product not only has the overcharge, discharge and short circuit multiple protection, but also to balance charge-discharge of all the internal cells. Environmental Test: Standard modern assembly line. All products have passed a variety of charge-discharge and aging test before they leave the factory. 100% quality test for all items. Notice: Not fits for Acer Aspire One D255E-13639 and D257-13478 laptop model.