This is a high-performance replacement cordless battery for the Panasonic HHRP301, guaranteed to meet or exceed the OEM specifications of your original. The cordless battery is 1.68 x 1.21 x 0.57 inches with an output of 3.6 volts. The chemistry is Ni-MH at 750mAH capacity. Manufactured by Empire Scientific, model number CPH-403B. 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.