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Proper battery expansion mixing wall mount and server rack lipo4 batteries

Deere103

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Apologies if this (likely has) been discussed already. If maybe someone can point me to the thread link.

Current setup is 18kpv with 2 indoor wall mount Eg4 lipo4 batteries. So 28kwh or so. Working well, and almost sized perfectly for our normal, but we've had abnormally cold winter here and the heat is draining by about 3am. I'm adding 20kwh of ruixu server rack batteries for the winter and will move these to my shop in the summer to run well pump and AC.

My question is about proper integration into my system.

What I'm thinking is this:

Server rack battery bank to t class fuse, then to buss bar on the Eg4 batteries (via amphenol connector) already in parallel. I will get the voltages close before connecting. Plan to use 2/0 cable.

Will mentioned closed loop worked well on these out of the box with 18k, but I was hoping to understand the proper closed loop connection protocol? What should the dip switch be set to on server rack batteries? And can I just connect the can (485) cable to the other chain of indoor wall batteries?

Thanks for the help, let me know if something sounds wrong. I don't have the server rack batteries yet, so maybe it will make sense once I put eyes on them. Juts trying to get a pla together.
 
bumping this thread to see if I get some bites, but also wanted to point out, briefly saw 9100 watts today from my 2 strings of 12 monofacial 405w q cell panels, thats a 93% output/charge efficiency! I've been really happy with these panels and they were very reasonably priced around $3300 for a pallet of 32
 
Apologies if this (likely has) been discussed already. If maybe someone can point me to the thread link.

Current setup is 18kpv with 2 indoor wall mount Eg4 lipo4 batteries. So 28kwh or so. Working well, and almost sized perfectly for our normal, but we've had abnormally cold winter here and the heat is draining by about 3am. I'm adding 20kwh of ruixu server rack batteries for the winter and will move these to my shop in the summer to run well pump and AC.

My question is about proper integration into my system.

What I'm thinking is this:

Server rack battery bank to t class fuse, then to buss bar on the Eg4 batteries (via amphenol connector) already in parallel. I will get the voltages close before connecting. Plan to use 2/0 cable.

Will mentioned closed loop worked well on these out of the box with 18k, but I was hoping to understand the proper closed loop connection protocol? What should the dip switch be set to on server rack batteries? And can I just connect the can (485) cable to the other chain of indoor wall batteries?

Thanks for the help, let me know if something sounds wrong. I don't have the server rack batteries yet, so maybe it will make sense once I put eyes on them. Juts trying to get a pla together.
Have you looked at this? It discusses the dip settings on the server rack batteries. https://www.ruixubattery.com/forum/...-rack-battery-communication-connection-manual

Another thread I found...



I'm working on a com issue of my own with a flexboss and lithi2-16. Good luck!
 
They should work fine without coms. Especially if it's temporary. I have the 18kpv and 3 indoor wall mounts. I also have 2 non coms rack batteries (Vatrer) hooked up just as you suggest. Working fine.
 
If your EG4 batteries are already closed-loop comms, I'd just put the others in parallel as per your plan:
Server rack battery bank to t class fuse, then to buss bar on the Eg4 batteries (via amphenol connector) already in parallel. I will get the voltages close before connecting. Plan to use 2/0 cable.
And then you should be good. Trying to mix and match vendors in closed-loop is going to be an exercise in frustration.
 

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