I am not sure what the weight of the empty units are. I would guess about four pounds. Full of liquid, it would weigh close to 13 lbs. The double would weigh close to 15. I use 6 neutrals in the single cell unit and 8 in the double cell unit. I know that these are large for most peoples taste, but I built them large to allow for sustainability. They will run for several hours, not sure how long as I got really bored after 3 hours and decided to goto bed. The units are built with polycarbonate plastic that can withstand continous service at 270°F. The plastice is 3/8" thick or .375" or 9.5mm. The plate spacing is 1.5mm thick or .06". These two units were actually build for other people. The size was at their request to fit the location they had chosen. These two are just an example as my boxes are custom built by your specifications.
2006 Ram, 5.9 cummins HO. 4 cell design, 1.5 LPM@30amp, 24.3 MPG