This is a high-performance replacement tablet battery for the GOOGLE NEXUS 7, guaranteed to meet or exceed the OEM specifications of your original. The tablet battery is 5.3 x 2.55 x 0.156 inches with an output of 3.7 volts. The chemistry is LI-POL at 4325mAH capacity. Manufactured by Empire Scientific, model number TLP-013. 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.