12 cell Battery for Acer Aspire 5335Z 5338 5516 5517 5532 5532 5536 5536G 5541 - 36 Months Warranty [li-ion 12-cell 8800mAh] High-Quality: Laptop battery choose high quality 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. Brand Services: Excellent Public Reputation. Leading technology experience in the energy industry for many years. Executing the 3 packets of standard and enjoy 12 months warranty.