This is a high-performance replacement digital battery for the Panasonic PV-GS500, guaranteed to meet or exceed the OEM specifications of your original. The digital battery is 1.59 x 1.42 x 1.76 inches with an output of 7.2 volts. The chemistry is Li-Ion at 2640mAH capacity. Manufactured by Empire Scientific, model number BLI-307-2.6. 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.