This is a high-performance replacement camera battery for the Sony NP-F730 External battery, guaranteed to meet or exceed the OEM specifications of your original. The camera battery is 2.8 x 1.51 x 1.51 inches with an output of 7.2 volts. The chemistry is Li-Ion at 3700mAH capacity. Manufactured by Empire Scientific, model number BLI-153-3.2C. 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.