(System details at the bottom of this post)
Both 100/20 MPPT charge controllers (configured identically) enter float before batteries are fully charged (set to 28.4 volts by the BMV-712) and even below the float voltage, which is set to 27.2V (Float is being entered around 26.9V, which is about where the BMV and MPPTs settle with a variation of about 0.04V between them, seen in image below)
I've ensured the charge controllers are reading actual battery voltage at night (via history), not just reading 0V
Charge controllers connected via closed breakers, and the solar system is capable of delivering around 700w when I do something like turn the AC on mid-day. I can watch the power flow via the Cerbo GX console window on my laptop
They also will charge the batteries, just not to full capacity.
The batteries will charge to full capacity on shore power (or generator, same thing.)
I've given the following threads a read, and tried my best to follow along and check off things where I could understand:
I've also consulted the online Victron and Battleborn documentation for ideas. Here is the documentation for my batteries (I have 2 in parallel for a 24V 100Ah system)
OK, so only one screenshot, the forum isn't allowing me to upload anything else, just throwing errors. So I'll just dictate.
Second Screenshot was settings from the BMV-712
Third Screenshot was settings from one of the 100/20 charge controllers (Both identical)
Charger Enabled (on)
Expert Mode (off)
Equalization - Disabled
Full system Outline:
4x Rich Solar 200w panels, each divided into two strings for each charge controller.
2x MPPT 100/20 Smart Solar charge controllers
Smart BMV-712 w/Smart Shunt
Cerbo GX (connected via hard line VE bus links to BMV-712 and both charge controllers.
2x Battleborn 24V 50Ah batteries in parallel
Orion 24 - 12v converter (for RV 12v system)