Well, if you have a dealer that won't make a mess of it, those items could be added to a 59G. I've thought about it, but so far haven't. I did set up to use my portable solar panel and I have a small inverter "just in case". My laptop is naturally 12v, and other devices charge just fine from the USB port on the stereo system. I've rigged up to use my engine battery for extra use - but some will say that's not a wise practice, so you must be very careful.
So far a weekend on a single battery is not really a problem running lights, tv, water pump, etc. More iffy if you are running the heater. Two batteries should be the minimum IMHO.
