This is a high-performance replacement vacuum battery for the Euro Pro Shark XB1918, guaranteed to meet or exceed the OEM specifications of your original. The vacuum battery is 3.54 x 1.77 x 1.73 inches with an output of 7.2 volts. The chemistry is NIMH at 2500mAH capacity. Manufactured by Empire Scientific, model number VNH-110. 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.