The present invention relates to network enabled analysis of x-ray images. In this case, the transfer device comprises a first sampling device for determining that the two energy stores have been filled sufficiently, a second sampling device for detecting an energy withdrawal from one of the vehicle electrical distribution systems, and a DC-to-DC converter for transferring energy between the vehicle electrical distribution systems. The invention uses a laser diode with a cylindrical lens to perform light source detection. This design reduces the number of manway required for the quench box. A calibration pattern may be further be displayed and user inputs associated with locations received responsive to calibration pattern. This provides a more powerful scraping effect.