I’m looking at building DIY storage for my DIY camper. Comparing my original idea of using EG4 rack batteries (24v or 48v) it is cheaper. We haven’t decided on which voltage we want to use yet. But for most average mobile solar users, 12v prebuilt china batteries are cheaper. Those people also need less storage capacity and use less panels. If I was just power a fridge, a fan or two and some led lighting, sure 12v is great. But we will be powering a mini split, fridge, lights, fans, Xbox, tv, chargers, etc. So higher voltage will be much easier for us. Anyways. I can build diy for almost half the cost of buying the EG4. So to me it’s cheaper. Granted shit is constantly changing in price. So when we finally build our solar system that may change and I may go back to the idea of rack batteries. But either way it’s all in fun because at the end of the day, do whatever makes you feel happy
Also, I’m sure I’ll share our whole set up when we finally get it done next spring