This is a high-performance replacement video battery for the Sony PVM8040, guaranteed to meet or exceed the OEM specifications of your original. The video battery is 5.25 x 3.33 x 2.17 inches with an output of 14.4 volts. The chemistry is Li-Ion at 7200mAH capacity. Manufactured by Empire Scientific, model number BLI-292-6.6. 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.