dryfly wrote:
jrnymn7 wrote:
If all one is in need of accomplishing is simple conversion from 120v to 12v, wouldn't a simple psu work? (Just figure out max load draw and size accordingly). They come in both adjustable and fixed voltages.
~$60 for 40a, ~$110 for a 60a.
You also need a means of charging and regulating the battery, other than that, Yes. Most converters have 3 or 4 stages of charging from max to maintenance modes.
Indeed, but I got the impression you had a separate charger in place. I now see you had the battery disconnected for troubleshooting.
Nevertheless, as BFL alluded to, if you dry camp a lot, you may be best to go with two separate switching power supply units. Most have adjustable voltage. You can set one to a suitable voltage, i.e; 12v plus circuit voltage drop, for powering the rig's electrical, and the other to suitable charging voltages. This can work out very well, especially if the battery is a long ways from the 12v distribution. Just something to possibly consider.