03-22-2007, 08:11 AM
We use exactly that setup for running a small fridge and to charge a deep cycle battery to power a telescope when we're out in the boonies, but in that situation the charging doesn't interfere with battery usage. In our case it takes a pretty good size solar panel (2' x 5'). Similar to what a previous post says, you have to multiply the panel amps by the number of hours charging and have that match the amount of amp-hours you expect to need for the trolling motor. I suppose you'd need a couple batteries to switch out, but this setup does give you independence from an extension cord.