This is a high-performance replacement digital battery for the Panasonic DMW-BCM13, guaranteed to meet or exceed the OEM specifications of your original. The digital battery is 1.66 x 1.34 x 0.34 inches with an output of 3.6 volts. The chemistry is LI-ION at 950mAH capacity. Manufactured by Empire Scientific, model number BLI-445. 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.