This is the 40 watt driver/dimmer for the Compact Beamlight CBL-1. One end has a 3-Pin XLR to attach direct to the CBL-1 and the other end has a 2.1mm connector for the included d-tap cable for battery operation. Any 14.4 VDC battery above 40 watts will operate the CBL-1.
An optional 65 watt Power Supply is also available.