The VL-B3 has been designed to double the output voltage whilst maintaining extended run-times. The belt uses 4x V-Lok batteries VL-90H, VL-150H, VL-190 for example and works by discharging two V-Lok batteries before automatically switching to discharge the remaining 2x batteries.

Power is output via 2x XLR 3-pin Female connectors which are wired to the UK industry standard.