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diy solar

Battery choice for 24v RV system

jsalbre

Electrons are exciting
Joined
Apr 17, 2022
Messages
33
Location
Idaho
I'm building a system for my new RV using all Victron equipment, including a 24/3000/70-50 2x120 inverter, and I'm struggling to decide on batteries.

All of the equipment needs to go in my trailer's front pass through storage area (while still leaving as much room as possible for actual storage) so the size of the battery bank is definitely a factor. I'd like a minimum of 400Ah @ 24V, but higher is of course better as long as it fits.

I've used SOK batteries in my recent previous builds because I love the construction quality, but they only offer low Ah ratings in 24V and I really don't want to do series wiring of 12V batts.

Here's the batteries I'm currently looking at (along with some specs), but I'm definitely open to other options. I'd like to be somewhat cost-conscious, but reliability trumps cost as I need this thing to stay up and running even when I'm away and my wife is in the trailer alone.

1749592403719.png

That WattCycle is definitely the cheapest per Wh, and ends up with a significantly higher total capacity, but it's also by far the heaviest and largest setup, and I can't find much information out there about that model.

And here's a picture of the space I'm going to be installing in (from an RV dealer's site, as the trailer hasn't been delivered to me yet):

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I like the more capacity and lower cost. Doubt there is any reason to avoid WattCycle. I would go for that or build my own.
 
I just ordered the new SOK 24V 150Ah batteries that were released last night. I know I'm taking a chance on something brand new, but I've used a number of different SOK batteries in the past and been very happy with them, and these are almost the same as the 314Ah 12V that Will reviewed, but with some improvements that he said they should make.

 

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