The V-Mount Battery Plate from GVM is an adapter made of PVC plastic and aluminum alloy, designed as a power system to work with two 14.8V V-Mount batteries to provide total DC30V Power as DC output. It features a power switch and a 150cm long power supply cable with male 5.5*2.1 DC connector and lossless output voltage of the V-Mount Battery. Which will provide power to the lights like our GVM P80S and other DC30V input devices, allowing you to run for longer with less battery change. Moreover, It is portable and convenient as an outdoor lighting power supply system, which can solve your urgent need for power.