BMS Communication with Inverter - Growatt to Lithium Setup and Problem

In this video I will go into detail on how the Growatt Manual instructs us to setup the communications between the Growatt Inverters and the Lithium Batteries, more specifically the EG4-LL LifePower4 24v Lithium batteries that I currently have configured on my system. Does it work on the Growatt 48v spf 3000tl lvm-es inverter connected to 24v EG4 48 volt batteries like it does with the Growatt 5000es? Let's find out and see!

Update 12-20-2021: - In regards to communication between Growatt and Inverter, I was just looking up the Pin communication for RJ45 coming from the Growatt 3000tl is on 1/2 and the 24v EG4's Manual says its RJ45 communicating is on Pins 7/8, the fix might be as easy as making a crossover cable that functions to send signal from Pins 1/2 to 7/8. Planning to give this a try and will post here if it works! This is the video of me trying this fix:    • Fault (20) Growatt & EG4 24v Battery ...  

I also do testing on the Voltage reading displayed on the inverter to find out how accurate the display setting is on "USER" defined under setting 5 on the Growatt 3000tl inverter option settings.

Comments are welcome, one reason I create these videos is for us all to learn, be safe and create a good experience for all while making DIY projects.

An overview of my system - 2 Growatt 3000TL LVM-ES 48 volt inverters, configured to grid power, running in parallel Split Phase, connected to 24v EG4-LL Lithium batteries, 25.6V, 200AH - 2 x 2 in series to make 48v 400AH total. Overall a great system, 7KW PV system feeding into this battery bank, not a ton of power but more than efficient when connected to the grid and being aware of your electrical needs and consumption. Happy DIY-ing friends! Leave any comments below, if I can I'll be more than happy to help.

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