This is a high-performance replacement digital battery for the Canon GL2, guaranteed to meet or exceed the OEM specifications of your original. The digital battery is 2.8 x 1.5 x 2.4 inches with an output of 7.4 volts. The chemistry is LI-ION at 6600mAH capacity. Manufactured by Empire Scientific, model number BLI-436-7.3. 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.