This is a high-performance replacement tablet battery for the AMAZON KINDLE 3 WIFI, guaranteed to meet or exceed the OEM specifications of your original. The tablet battery is 4.2 x 2.64 x 0.151 inches with an output of 3.7 volts. The chemistry is LI-POL at 1830mAH capacity. Manufactured by Empire Scientific, model number TLP-004. 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.