Phalanxer

If you have a setup already running with ESP32 then that's all good. I was just laying out some options with a Raspberry pi if you didn't. I think Meetyg's point is that good quality EEPROM is generally, as you say, in the range of 100,000 writes in a lifetime, but we don't know the quality of the EEPROM used in the machine. Some EEPROM can have as few as 10,000 or less writes in a lifecycle.
EEPROM is writing when sending the commands for change of float voltage in Cagire's case with the automation using the ESP32.

My inverter doesn't have the float bug issue (That I'm aware), but I have been using some docker images from Github to make an MQTT and Node Red server where I can automatically read parameters from the inverter from a raspberry pi and push commands to the inverter automatically using Node Red and Mosquitto. Using a fork of the following software: https://github.com/ned-kelly/docker-voltronic-homeassistant. I haven't used the equalisation voltage parameter, but it must be in there if Watchpower can see it. I'm guessing you could use Node Red to switch on the inverter equalisation for a time in the morning and evening or even integrate over time how long the battery has been at equalisation voltage and switch based on that. Just make sure to synchronise docker with system time on the pi to make sure you get daylight savings time for your region.
 
Edit: Found the fork https://github.com/catalinbordan/docker-voltronic-homeassistant. Seems like no adaption I can find has found the equalisation parameter, but you could raise the float to the boost voltage for a time instead.

I work in substations, where all panels are wired with either 220V, 110V or 48V DC and some with quite high loads with thousands of amps. We use regular armoured cable with no issue. Just make sure you don't exceed the manufacturer voltage/current rating of the cable. I've seen some substations running for 50 years with no issues, unless there's a pre-existing cable defect or someone chops into it. AC should not be run in the same cable as it can superimpose a waveform onto the DC. We normally ground the armour on one side only, but that's due to potential rise in the ground in substations due to HV ground faults.