I don’t bother with the inverter. I just tossed in a marine battery that runs the pump (dc powered) and some flourescent lights (slightly modified) and a little xm satellite boombox (also slightly modified but it works off the battery as well.) I wired in a regular outlet and can run these items (except the pump which is hardwired into the battery) by just plugging em in. I think I will hardwire the fan though and figure an easy plug/unplug feature for it where I mount it on the cart. I charge the battery up about once every week or so and am pretty good to go.