I'm currently designing a LiFePO4 / Solar set-up for my camper van. With relatively inexpensive DIY Lithium batteries, it seems easy to have a system with a large battery bank compared to the amount of solar that'll fit on a small van roof. Is there any disadvantage to this? For example, I'm leaning towards a 12V 540ah bank with 380W of solar. I realize that the panels will take a long time to charge the bank, but I'd also have a DC-DC charger charging the batteries while driving.
My max load requirements are about 1700Whr (140Ahr) per day, so I really don't need the 540ah bank, but again, DIY cells are fairly cheap...so why not? Am I missing anything?
My max load requirements are about 1700Whr (140Ahr) per day, so I really don't need the 540ah bank, but again, DIY cells are fairly cheap...so why not? Am I missing anything?