AS09D36, as one of the most popular batteries which is normally used for the Acer Aspire Laptops, now is issued by the USBPHONEWORLD. This battery is compatible with the many kinds of Acer Laptop Models that includes Acer Aspire 3810, Acer Aspire 4810TZ, and Acer Aspire 5810 Timeline. The USBPHONEWORLD is able to provide this high quality compatible battery for these Acer Laptop models with a low price range, and we can guarantee our customers that our AS09D36 battery is 100% compatible with the Acer Laptops, and this battery also meet or even exceed the Original Battery's Specifications. Our AS09D36 battery is a brand new 6-cell lithium ion battery with 11.1V and 4400mAh/49Wh capacity. With this battery, customers can enjoy the advantages of the newer battery technology and design. This battery will fit customers' laptop well and offer high quality performance. Plus, this battery is light and so easy to carry when the customers are travelling. For customer's convenience, USBPHONEWORLD offers the different shipping options which make sure that the customers reveice the battery on time as their requests. Furthermore, we also have a wonderful warranty plan: one year free warranty came with the battery and 3 years optional extended warranty with only $39.95.