Low Battery Voltage
2020 Keystone Cougar 26RBS. After a 4hr trip home, low voltage prevented the slide from opening. The fridge was running during the trip. Plugged in and opened the slide. The next day I had the bat...
Forum Discussion
klutchdust wrote:Lwiddis wrote:
An RV battery or batteries drawn down to 6.3 volts is toast. You have an issue, yes, but buy new batteries when solved.
So if a battery gets discharged to that point it is no longer usable, even if recharged?
I had a battery that was dry, sitting in the garage zero charge in it. I filled with distilled water, trickle charged it for a few days and it went back in service with no issues.
It may not be completely dead, but your RV battery will never have it's full capacity.
I have run automotive batteries down to near zero (interior lights on) and after recharging they were able to start the car, but only because it had very short crank times and the charging system kept it at 100% while the engine was running.
Time for a new RV battery. Two 6V golf cart batteries have more capacity than a 12V marine/RV battery and don't cost much more.
If you want to run the refrigerator on electric while driving, get a DC-DC batter charger.
