I'm working on setting up a solar array for my remote homestead, and I'm looking for help finding an automatic battery bank switch. I want to wire either one switch for all four battery banks or multiple switches, so I can manage them independently. Since I won't require much power initially, just enough for lights and one power tool at a time, I've decided against building the entire system at once due to costs. My plan involves having four independent battery banks, each with eight 51.2V 100Ah batteries in parallel, totaling 131Kwh at an 80% depth of discharge when fully operational. The goal is to ensure I have consistent power during winter months when I can't leave due to remoteness and potential supply issues. Any suggestions on an automatic switch for this setup would be appreciated!
2 Answers
You might not find a perfect single switch solution, but using multiple inverters could help. Each battery bank would have its own inverter, allowing for AC coupling. If one battery bank is full, the respective inverter can overproduce AC while the others charge with the excess, ensuring that if one fails, the rest are still functional until it gets fixed. Plus, this way you're not without power while repairs are ongoing. Let me know if you want intricacies on how to set this up!
Have you considered just connecting all your batteries in parallel? If one battery goes bad, you can simply disconnect it and keep using the rest of your bank without losing power until you get the replacement. It seems like a straightforward solution without needing an automated switch.
That's exactly what I'm aiming for! Just having a tough time figuring out how to automate the switch instead of having to do it manually.