Old technology. We did this in the scouts back in the 1970s. All the other groups thought we had power. We actually had a few car batteries hiding in the bush.
We said surprisingly 'don't you have power!'
No one found out what we were doing. Great bit of fun.
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Procrastination, mankind's greatest labour saving device!
50L custom fuel rack 6x20W 100/20mppt 4x26Ah gel 28L super insulated fridge TPMS 3 ARB compressors heatsink fan cooled 4L tank aftercooler Air/water OCD cleaning 4 stage car acoustic insulation.