Group 24 vs. 27 battery
I'm afraid the battery on my tt has given up the ghost. It won't hold a charge for more than a couple of days with no known draw on it. It is a Group 24 size. My tt is a 2011 model and I assume it i...
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If you don't know the history of the battery since it was installed, it probably has been left in an uncharged state and no longer has it's original capacity. I learned this the hard way on our second trailer when it was new when the battery dropped to 8V a month after its last outing due to parasitic loads. (Our first trailer (99 Casita) had no parasitic loads and I could leave it connected over winter and it would be fine the next season.) The abused battery on our second still new trailer left us stranded and had to be replaced the second day on our first dry camping trip.
Our current trailer came with a Gr24 battery but I was able to fit a Trojan SCS 200 Gr 27 (115 AH) in the battery box. The battery is maintained with a 55W solar panel/controller when stored at home and we use a small generator to do daily charging while dry camping. The battery rarely goes below 70% before recharging. This apparoach has worked well for us for years.
I would recommend that you start with a fresh battery and make sure it stays charged. If you don't mind paying more, get a quality 12V deep cycle battery like the Trojan SCS series. It will weigh more, have more capacity and last longer compared to a generic 12V battery.
If you do any dry camping you really need to have a digital multi meter so you can measure battery voltage. Having a DC clamp on current meter in addition is even better so you can check load and charging current.
Dick
Our current trailer came with a Gr24 battery but I was able to fit a Trojan SCS 200 Gr 27 (115 AH) in the battery box. The battery is maintained with a 55W solar panel/controller when stored at home and we use a small generator to do daily charging while dry camping. The battery rarely goes below 70% before recharging. This apparoach has worked well for us for years.
I would recommend that you start with a fresh battery and make sure it stays charged. If you don't mind paying more, get a quality 12V deep cycle battery like the Trojan SCS series. It will weigh more, have more capacity and last longer compared to a generic 12V battery.
If you do any dry camping you really need to have a digital multi meter so you can measure battery voltage. Having a DC clamp on current meter in addition is even better so you can check load and charging current.
Dick
