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Updated the neutral. It connects to the transfer switch which runs to the 100 amp mains panel.

Done.

The 250ah BMS from Aliexpress was only 9 USD higher than the 200ah so I just went ahead and bought 2 of those. Thanks so much for responding to my inquiry. It is much appreciated.

I'm considering buying a PowMr 10k SunSmart Hybrid Solar controller. I would connect it to a manual transfer switch in my shed so I still have my utility company power and my solar system to alternatively send power to my garage 200 amp breaker box to power a 240v mini split and 120v...

Guys, Thanks for your feedback. It is appreciated. I will add lights a compressor and maybe my well pump as I ramp up and see what the system will handle. I also intend to feed it back to the house at some point as backup during outages. I may even add a transfer switch at the house to run some...

Would appreciate input on my planned system. I'm looking to buy the SunSmart 10k hybrid system. Am I going to be able to get my 120v off one of the hot legs of this split-phase unit?

Interesting. My compressor motor is only 2hp. I was more concerned about whether it could handle the well pump.

Trying to determine what size Daly bms I need. I will have (2) 16s lf230ah battery packs connected to a PowMr10k in split-phase mode. I’m running a few things in the shop (mini split, refrigerator, miscellaneous tools, and computer) and will have a transfer switch to the house for backup...

Both packs are made from 18650 batteries. Both packs work on a 48v system. Wouldn't the BMS's manage the slight difference? When one reaches 100% SOC it prevents overcharging and the other BMS would let the one at 75% continue to charge.

Yes, two different buildings. There is an outside breaker box on the pole that feeds the garage and well house. So, does that mean the garage panel is a sub-panel? I guess I've considered it a main panel.

I have an offer to get a couple of mains matching transformers free. I don't have a need right now but wondering as I expand or upgrade my planned system could they come in handy. I've attached a schematic for you to examine and give feedback.

I appreciate you taking the time to answer my questions.

Bentley, isn't a refrigerator and computer insignificant enough to not worry too much about?

I just want to use it to power a few things in the garage. I'll run it to the house as only backup later. Will my layout work or not in your opinion?

Can I connect 13S & 14S power packs to a common bus bar to my solar controller without damaging either? They would both have their own BMS's. I'm wondering if the 14S pack will drop down to the 13S level.

You say you are in Texas but not on the Texas grid. How can this be? I'm in Groesbeck which I consider East Texas.

Is anyone using the 29v 7S PCB's from J Garcia (jag35.com) in series to make 48v? How is it working for you? I got a lot of this pcb's in a trade and like the idea of being able to swap out a bad battery reasonably easily. From a questioner: Jag35.com Tech FAQ. 14S 48V PCB BATTERY MODULES I...