I'm considering setting up a 48V power system in my trailer since I only use it a few times a year, typically during the hotter months when I'd like to have an AC unit. While I can find 48V AC units and decent prices on six 2kW solar panels, the 300Ah batteries seem a bit pricey for my limited use. I'm also planning to install a solar array on my house with a small battery backup. Has anyone tried using rack-mounted batteries that can be easily moved between the house and the RV? I'm even contemplating building a modular battery unit with its own charge controller that I can plug and unplug from my home solar array as needed.
3 Answers
Yeah, a 48V 300Ah battery is going to weigh a lot, roughly 260 lbs (118 kg). If you're moving them around, that's going to be a bit of a workout! A better option would be to get multiple smaller batteries instead, like six 50Ah batteries at around 50 lbs each. Easier to manage and move!
I agree. You can set them up on wheels too, making it a breeze to transport.
I’ve built modular 48V setups that I swap around as needed. They power my home systems, run my lawnmower, and also get moved to my cabin for a few weeks every year. The big batteries can be cumbersome, but small packs around 35 lbs are way easier to handle. They also have circuitry that allows stacking at different voltages!
That's smart! Keeping them lighter makes it way more practical for mobility.
Absolutely! Compact and modular is the way to go for flexibility.
From my experience, it’s definitely doable. Just keep in mind, if you’re using them in the RV for an AC, you’ll need a solid inverter to convert to the 240V required. If you plan to run the AC, I'd suggest planning for about 8000 BTU to stay cool. Also, consider adding 3 or 4 solar panels on the RV with a charge controller so you can extend run time effectively!
Great point about the inverter! Proper connections and planning will be key.
Definitely! Solar is a game changer for extending battery life when camping.
True, multiple smaller batteries would definitely make things easier to handle, especially if you're planning to move them often!