This is a high-performance replacement two-way battery for the Bendix King KNG-P400, guaranteed to meet or exceed the OEM specifications of your original. The two-way battery is 5.31 x 2.32 x 0.71 inches with an output of 11 volts. The chemistry is LI-ION at 1900mAH capacity. Manufactured by Empire Scientific, model number BLI-KAA0100. 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.