The Univolt in my '71 27' Overlander has apparently gone T-U, so I need a replacement pretty much right now (living at the moment on juice from a car battery charger). By Summer I intend to be way off-grid (permanent, full-time), with sole juice coming from solar (maybe 400 watts or so, several batteries) and likely a morning generator wakeup. My electricity needs are smallish -- no TeeVee, no AC, no microwave or coffeemaker, etc. Basically, I need to run a big hotrod CAD computer (600watt power supply), satellite modem, the furnace pretty much constantly (gets chilly at 12,000', even on summer nights), one light at a time for a few hours at night, maybe the water pump on the occasional above-freezing summer day, and a little 12v
radio for semi-sanity.
Now obviously I haven't thought about this very much yet, because I don't even have a solid handle on the typical daily power flow. If I call on a few wonky brain cells (damn Sixties!), I realize that the converter will only come into play when the generator cranks up, or so I "think". But buying a new converter unfortunately must come before attacking the problem rationally, which leads to my question.
Is there any reason in this circumstance, beyond initial price, to prefer a 60 watt Intellipower converter over a 45 watt? Or are there better options for total off-grid use? Thanks in advance for wisdom I could not hope to otherwise tap.