Need Battery Help ASAP
We are camping this week and I'm having trouble with the batteries on the trailer. I have 2 12V batteries in parallel. Both batteries are 4-6 years old and I have not had any issues with them to this point.
One battery was on the trailer and it died after about 2 days of usage for just the refrigerator (the fridge was on gas so the battery only needed to power the thermostat, no one was using the trailer so the only other things that would have been on were the CO detector and the radio vampire draw. The battery was switched out with a second battery that was fully charged and that lasted about a day or less. So today around 3 PM I took one battery that tested at 12.3 volts and another that was at 12.9 volts and set them up in parallel which I have done many times before and always get a few days of usage out of them but about 4 hours later they are already both down to 10 volts.
I don't think it's a battery issue because they are both doing the same thing regardless of how they are hooked up and it would be pretty coincidental that both batteries went at once. It seems like something else is drawing the power down pretty quickly. I've dry camped like this for years and never had this happen before.
Any ideas? Thanks in advance.
Mike
One battery was on the trailer and it died after about 2 days of usage for just the refrigerator (the fridge was on gas so the battery only needed to power the thermostat, no one was using the trailer so the only other things that would have been on were the CO detector and the radio vampire draw. The battery was switched out with a second battery that was fully charged and that lasted about a day or less. So today around 3 PM I took one battery that tested at 12.3 volts and another that was at 12.9 volts and set them up in parallel which I have done many times before and always get a few days of usage out of them but about 4 hours later they are already both down to 10 volts.
I don't think it's a battery issue because they are both doing the same thing regardless of how they are hooked up and it would be pretty coincidental that both batteries went at once. It seems like something else is drawing the power down pretty quickly. I've dry camped like this for years and never had this happen before.
Any ideas? Thanks in advance.
Mike
