You go, Raymond!

By the time you get through ("If it ain't broke, mess with it anyway,") you'll have perfected a truly awesome, aesthetically-pleasing workbench marvel that will be the envy of geeks and techno-junkies alike!

Hey, if you don't care about the weight, maybe you could tap the second battery (wired parallel with the first battery) into the headlights and have some real options. You don't have to use a Malibu light. With your genius for internet shopping, you could find some serious beamage out there. (There is also abundant information about the finer points of wattage, amperage, run-time, beam patterns, bulb options, wiring, etc.)