Xapper can increase battery voltage and lower cell internal resistance. This unit use 12VDC power input with at least 5A capacity, fully adjustable from 1. 2V to 90V xapping voltage. The Xapper DCX3300 is Xipp s latest evolution of the Xapper! It features high power mechanical switch, trouble free arm and fire operation and with adjustable Xapping power into a smaller and more convenient case size.