I still have not received the batteries so I do not have any further information.....probably off shore in San Diego!I am interested in anyone's experience using this battery bank in conjunction with SMA sunny Island invertors. Any setup information would be helpful, as I have not yet received the batteries or setup the sunny islands.
I am interested in anyone's experience using this battery bank in conjunction with SMA sunny Island invertors. Any setup information would be helpful, as I have not yet received the batteries or setup the sunny islands.
I checked out the GitHub for the Solar Director project and documentation was a little lacking. Is there another site where I can find out more info?I am using my own lithium battery bank with my sunny islands ... my "BMS" is here:
solardirector/agents/si at main · sshoecraft/solardirector
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I use a raspberry PI with a CAN/RS485 hat ... and I bought the RS485 card for my SI
The SI agent has the ability to set/get parameters from the SI, but I usually use siutil day-to-day:
solardirector/utils/siutil at main · sshoecraft/solardirector
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It's great for real time monitoring the SI (from can bus) and batch setting params via the -f option
I checked out the GitHub for the Solar Director project and documentation was a little lacking. Is there another site where I can find out more info?
Oh I didn't realize you were the dev. Very cool. I have 2 SI's and I'm planning on using yasdi2mqtt unless your software offers something extra.Chris, I'll write up docs for it this w/e ... I don't have any all atm so I'll try to get something going as a base
From what I've read there are two options for lithium batteries with SMA Sunny Island. One for lead-acid (configurable voltages) that doesn't require BMS communication and Lithium one that requires BMS communication.
If your battery BMS and the Sunny Boy can communicate, then you can use the Lithium battery mode. From what I've read on this the BMS sends some voltage data to the Sunny Boy, but I'm not sure what is the exact role of these voltages for the Sunny Boy.
In the case where the BMS can't communicate with the Sunny Boy, you go with lead-acid mode. Once the voltages for charging/discharging are configured properly the setup works just fine with LiFePo4 batteries.
There was a topic in the forum where the author has attempted to use (IIRC) DIY LiFePo4 battery with a BMS that is supposed to be supported. He ran in issues and switched to the lead-acid battery mode and everything worked fine.
I'm also going for the SMA Sunny Island in the future. There was a lot of reading and validating stuff against official SMA documentation until I was certain that the SMA Sunny Island can work with DIY LiFePo4 batteries. This was a blocker for me to go with the SMA products for my setup.
Oh I didn't realize you were the dev. Very cool. I have 2 SI's and I'm planning on using yasdi2mqtt unless your software offers something extra.
can you help me with set up ? joe 443-392-2007The SI agent (agents/si) acts as a "BMS" to the Sunny Island. I have an actual hardware BMS (JBD) on my battery packs. I then have a Raspberry PI with a CAN/RS485 card which is connected to the Sunny Island. The si agent talks to the Sunny Island via the CAN bus and acts as the external BMS agent. The RS485 component allows me to get/set parameters via the command line/through scripts. I'll try to detail the entire setup. It's been working for almost a year now and I'm very happy with it.