This is a high-performance replacement tablet battery for the AMAZON D01400, guaranteed to meet or exceed the OEM specifications of your original. The tablet battery is 4.55 x 4.25 x 0.133 inches with an output of 3.7 volts. The chemistry is LI-POL at 4400mAH capacity. Manufactured by Empire Scientific, model number TLP-001. 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.