This is a high-performance replacement laptop battery for the Acer GRAPE32, guaranteed to meet or exceed the OEM specifications of your original. The laptop battery is 5.5 x 3.52 x 0.85 inches with an output of 10.8 volts. The chemistry is Li-Ion at 4400mAH capacity. Manufactured by Empire Scientific, model number LTLI-9131-4.4. We offer a 1 Year Warranty with purchase.