pickjare wrote:
Though I have not actually checked for power at my 7-way, I pulled the B+ fuse for that charge wire so those batteries cannot be charged by tow vehicle. My pickup has 321,000 miles, I don't want the alternator working harder than necessary.
I just want to emphasize that it appears we lost 10% battery capacity per 24 hrs of camping use which is drastically different than so many others experienced. And not what I expected. I will check that pin for power because if I pulled wrong fuse and batteries did charge, this is way off, thanks for catching that.
Is the following a correct understanding of amp-hour ratings: If furnace used 6.5A and ran for an hour, does that mean I just used 6.5Amp-hours of the total available 225?
About all you would get would be around 5 amps from the alt. On the typical 10 gauge charge wire. And yes 6.5 AH but for long battery life 50% or around 112AH at the 20 hr rate(it would do you good to learn about the peukert's law)