Hi all. Wow, thanks for the responses.
2oldman wrote:
6 years is about time, especially for acid tubs. Let 'em charge then take voltage readings about every 15 minutes for a couple hours. If they're bad they'll drop to the low 12s or lower...assuming they charge up to 12.8 or so.
The Magnum "remote control" module at the front of the coach showed the batteries at ~9v an hour ago. After resetting the Magnum, flipping the 30amp breaker at the source, etc., it went up to 11.5v, and now is at 8.8v. EDIT: Now it's at 11.2v. Not sure how much I trust that.
The remote screen is flashing a fault for just a fraction of a second, every ~5-30s or so. The fault (when I can read it) is either "Over-temperature" or "No AC In" (more rarely). I think I've also seen a "Low Battery", I think, but it flashes so quickly it's hard to tell. The unit itself is cool to the touch, and the ambient temperature is mid-60s F.
The green light on the main Magnum unit isn't doing anything that the manual outlines. The manual outlines off, slow flash (blink every 8 seconds), medium flash (blink every 1s), and solid on. What it's doing is off for ~10-15s, then on for 3-15s. Off means there's the inverter's off and there's no AC power to it. On means it's bulk charging and in standby mode.
I know the battery voltage is obviously
outrageously low. But with the weirdness with the Magnum, I'd hate to buy brand new batteries then destroy them if the Magnum's the root cause here. Or if it's something else. The lights on the Magnum seem like it's not actually getting power. The interior 120v outlets blinking off might be the shoreline cutting out and the inverter not picking it up in time
Thanks for the advice to help me figure this out.
In the morning I'll review this thread again and try some things:
- Plugging into my neighbor's power to see if the issue persists.
- Read through the manual to see if disconnecting the batteries would cause problems. Seems to be some debate on that point in this thread :)
- ? Maybe just get new batteries, since I'm sure they wouldn't hurt. If putting 'em in doesn't fix the problem, I'd take 'em out to avoid damaging them.
Thanks, everybody. I'll update with more info when I have it.
