This is a high-performance replacement video battery for the Canon BP-617, guaranteed to meet or exceed the OEM specifications of your original. The video battery is 2.78 x 1.18 x 1.44 inches with an output of 7.2 volts. The chemistry is Li-Ion at 1900mAH capacity. Manufactured by Empire Scientific, model number BLI-169-1.7. 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.