Batteries not holding charge ???
I have 2 year old deep cycle Interstate batteries, usually they hold a charge for about 2 months but recently its much shorter than before. Is there a way to check the RV charging system? When I plug ...
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13.19 charging is hopefully in float mode. Disconnect and let them sit a few hours to see what the resting voltage is. You can see what your converter is doing by measuring the voltage at the converter's 12 volt terminals. I have an all in one unit, so I just open the breaker/fuse door and check the voltage on the DC board.
If your talking about a couple Interstate 12 volt group 24's or 27's two months with no charging seems like a bad idea to me. Whats the resting voltage after two months?
If you have a battery disconnect they might be okay for two months. I charge mine once a week while in storage off my generator. If I didn't have a generator I would have a 100 watt or so solar system for battery charging. Then you can leave the batteries on all the time, the solar will keep them topped up. I put a battery disconnect on all my RV's, its a must have IMO if your rig gets stored regularly. Every one of my trailers would have mystery drains, so I have a decent size battery disconnect like you would have in a boat, not those mickey mouse things people put on battery boxes.
If they drop to 12.4 volts or something like that it will take a good number of hours to recharge them 100% and a few hours to hit 90% if your charger is one with the 14 volt initial boost mode.
If your talking about a couple Interstate 12 volt group 24's or 27's two months with no charging seems like a bad idea to me. Whats the resting voltage after two months?
If you have a battery disconnect they might be okay for two months. I charge mine once a week while in storage off my generator. If I didn't have a generator I would have a 100 watt or so solar system for battery charging. Then you can leave the batteries on all the time, the solar will keep them topped up. I put a battery disconnect on all my RV's, its a must have IMO if your rig gets stored regularly. Every one of my trailers would have mystery drains, so I have a decent size battery disconnect like you would have in a boat, not those mickey mouse things people put on battery boxes.
If they drop to 12.4 volts or something like that it will take a good number of hours to recharge them 100% and a few hours to hit 90% if your charger is one with the 14 volt initial boost mode.
