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Just to close out this thread - or give some additional info - There was one thing I had not done and really hadn't thought it was a potential issue - i had not disconnected power from the Victron Smart shunt and essentially rebooted it. I had unplugged it from usb and various flavors of...

those are some good points. I am using the WIFI on the pi's (both raspberry and Orange) so I will give that a shot going hardwired. Easy enough I have ethernet right there. I emailed SA a couple of times and they have not responded. It's a bummer because their tool does everything I want...

thanks for your thoughts - I have tried multiple AC power supplies with the unit - all within specs... ALl having the same failure mode seems to me not to be power. could be glitchy SD card for sure - BUT when I built out the new OrangePI I used a new SDCard with it and it started glitching...

Ok - I have an install of Solarassistant.io monitoring my EG4 6500 and EG4 batteries. For many months things were fine. THe SolarAssistant was originally monitoring my growatt solution. I upgraded the solar environment to EG4 kit. Solarassistant was running on raspberry pi 4 with latest...

I have a circumstance similar , at least in so far as the 6p error. I can't confirm that the unit is trying to send out voltage when it is in this failure mode - but my circumstance was documented in detail on this forum at...

I should add there is a victron smart shunt in the system as well and it's working fine. Give readings as well as I eliminated it from the system to troubleshoot and it was not the culprit.

SO -have 2 EG4 6500Ex's as well as 6 EG4-LL V2 rack mount batteries in a bank. Entire system looks basically like Will's video and all equipment purchased from Signature Solar. Along with 2 Breakers from Signature as well as the PV disconnects. Everything was installed as well as a...

what silent fans did you use, if I may ask? Noctua? model number?

was there a significant difference in the noise level. I wonder if adding an auxiliary air handling system to pull the air through them. I use something like this for my resin 3d printing - using the top vents to attach through or even the bottom wiring raceway (if the system has that...

Thanks for running the experiment for us.

Hello - I am curious - the statement "When you get your new Raspberry PI add a Cat 5 RJ45 to USB cable to your purchase. You will use this cable to connect the eg4 ll v2 host battery RJ45s port with the remaining USB port on your Raspberry PI. " which port on the eg4-ll v2 did you...

Do these fans trigger off of internal case temperature or are they designed to trigger off of current handled? If it's overall case temperature then we could design external air handling / venting that would reduce the temperature and thus shift the need for the active cooling these fans are...

I actually really like my Growatt unit(s) - I say units because I only ever deployed the 1 - the other I had purchased for pairing but didn't actually deploy it. The experience with the Growatt devices gave me confidence to step up to a larger system. I never personally had any problems with...

Hello everyone thats been participating in this thread - I am upgrading my system from the Growatt to the EG4 6500EX units so I won't have any additional updates for this thread from the Growatt perspective. I'll also be selling my 2 Growatt units. I'm glad this thread was so useful to folks!

that was my original ask of growatt. How to communicate from the BMS (in my case overkill solar) to the growatt).

Hello folks - Not sure if any of this is of interest but I asked growatt to provide me some info related to their communication protocol and they provided the following

SO - crazy as it may seem they provided the communication protocol documents.

Sorry I have been absent so long - DataCenter duties were extreme this last month - I did send them exactly that question RE: can they provide documentation regarding the comm protocol. Will let the group know their response.

I mean here's the thing. This unit requires a battery to function. And I find it difficult to believe that the company Growatt doesn't know that a great great many of folks building systems using this unit are using LifePO4 batteries. The USE setting was for lifepo4, then they added another...

Thanks for the response - Lithium setting on the growatt is only for use of THEIR battery - it has a comunications wire that plugs into the growatt.

thank you very much for this additional detail and your insight. Do you know if this is the same way the MPP all in ones behave? I responded back to growatt and asked... "Is there currently a battery on the market that works with growatt in the use2 setting? Like who makes a BMS that does...

so in the ongoing conversation with Growatt this is the latest response. Hello George, The system for US2 is working as needed. As the lithium battery without a BMS, if you need to use solar power during the battery voltage is full, please ask the battery supplier to integrate the BMS of...

you can use a computer and connect from the computer to the growatt using a usb cable - (mine came with a USB cable but it's just a usb cable - nothing special) the tool I use is pvkeeper2 and it's hosted on ian's watts247 site https://watts247.com/manuals/gw/SoftwareCD/PVKeeperV2.0/ the data...

just wanted to follow up - my issue was not temperature. Sorry not seeing a temp issue on my unit - it's all related to the usage of us2 setting. I'll post in the broader thread about the latest email from growatt

Tried growatt's recommended setting of USE2. This was the result. Reduced the overall load last night to start the batteries off with a higher charge this am. The unit was set to USE2 - at around 9:55am sun fully up the unit just turned off the solar panels when the battery was full. I...

what is the settings you are using for 5, 19, 20 and what is the battery type and configuration as well as solar panel configuration?

One item I wanted to add to the discussion. I reached out directly to growatt corporate using their contact page and they redirected me to US Support. I am including the thread from US support below. I have switched to use2 for a test today for them. but I am not optimistic. Again the...

19 set to 27.2 and 20 set to 26.9 (I may play with them as I understand more)

Edit of previous post

thanks for the info and ideas. I do believe I have figured out what the issue was. Through looking over a few others settings I noticed everyone that was working had used USER as the battery type ( also called USE). There is a new setting added in a recent firmware called USE2. ANd...

just wanted to post an update. I'm not declaring victory yet but Snoobler and Lt. Dan's posting of their settings were incredibly useful. I changed my unit setting 5 from USE2 to USE and (granted with only 1 day of observations under my belt) the unit appears to be behaving in a manner more...

just wanted to update folks. LifePO4 CALB 100ah cells configured in a 24volt configuration with OverKill Solar BMS.

The batteries hit a certain voltage and the unit is capable enough to stop charging them. The unit is also smart enough to, while charging, siphon off some of that power from the Solar Panels to power the load. The unit's failure is that it does not scale back the power drawn from the Solar...

I do appreciate your input. the issue is primarily this: I want the batteries to go into the evening with as much power as they can have before the sun goes down and they are needed. As it stands - the batteries are generally full by 1 - 2 pm. At that point the panels are being shut off...