This is a high-performance replacement laptop battery for the Acer BT.00804.020, guaranteed to meet or exceed the OEM specifications of your original. The laptop battery is 10.58 x 2.69 x 1.5 inches with an output of 14.8 volts. The chemistry is LI-ION at 8800mAH capacity. Manufactured by Empire Scientific, model number LTLI-9241-8.8. We offer a 1 Year Warranty with purchase. See this product elsewhere at a lower price? Call or email us; we have a Price Match Guarantee.