This is a high-performance replacement tablet battery for the AMAZON 515-1058-01, guaranteed to meet or exceed the OEM specifications of your original. The tablet battery is 2.46 x 2.1 x 0.105 inches with an output of 3.7 volts. The chemistry is LI-POL at 890mAH capacity. Manufactured by Empire Scientific, model number TLP-005. 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.