Did this harm my batteries?
I once left my disconnect switch on in my TT when I was storing it, and when I came back a few weeks later, the batteries were down to a couple of lights on the control panel. I disconnected and we p...
Forum Discussion
pianotuna wrote:
Hi,
Yes, the ten days at the campground count.
Fully charge the batteries then:
If you have a volt meter, leave the batteries disconnected from any load or charge for 24 hours. Check the voltage. If it is 12.6 or about they are damaged but have mostly recovered. If they are at 12.5 volts "day is done" is approaching. If it is 12.4 volts the nails are ready to be pounded in the coffin.
That is what I would do in your situation. Since you were down to two lights you stand a chance of recovering. I would also add if you have a charger with a desulfate mode I would run it for at least a week and then repeat pianotuna's recommended test. On our second trailer I learned the hard way about parasitic loads and destroyed the original battery by letting it go down to 8V a month after our first trip with it. We took it on a dry camping trip to the Smokies and the battery voltage would drop very quickly after turning off the generator. Had to drive to Knoxville to get a new one. I added a solar panel and controller to make sure that does not happen during storage at our home.
Dick
