The IndiPRO Tools 2.5mm DC to EN-EL15 Dummy Battery Cable allows you to connect to various power sources with a 2.5mm DC output. The cable is inline regulated to deliver a 9.2V output to EN-EL15-compatible devices, and therefore requires a power source that provides 11-19V of power. Inline regulation also prevents causing video noise and heat in the camera. The cable measures 24" long.