Apologies if this is the wrong section, but, I’m struggling to find what I need to get my Multiplus II to work as I want it to. I tried the new DESS, but I don’t think there’s a way to achieve what I want on the victron alone.
Essentially, I’m on Octopus Intelligent Go, (Cheap electricity between 23:30 and 05:30) unless my car is plugged in, when I get cheap electricity at random times, I am also on an export tarrif, so, it’s more economical to export as much solar as possible, and charge the batteries overnight at the cheap rate than it is to charge the batteries from the solar.
So, I have homeassistant set to see those random times and I want to be able to control my Victron settings from home assistant, preferably using Modbus.
Can someone please point me in the right direction (using small words as I am new to this), I am trying to achieve the following.
- During the day, use the solar for consumption first, then export where possible, if there’s not enough, use the battery, but, do not charge the battery from the solar at all during the day.
- If there’s no extra charging slot (as detected by HASS) then charge the batteries overnight to 100%, between 23:30 and 05:30, and run the house and car charger from the grid.
- If a charging session is detected, charge the batteries and run the house and car charger from the grind.
I’ve been manually controlling this using sheduled charge levels, slot 1 setup for 19:01pm till 23:31, then the usual nightly slot in slot 2, and a in slot 3 one that I modify to be daytime.
I’ve looked at the modbus register list (3.40) and there seems to be little that’s actually writable, but I was thinking about having a look at ESS Mode and just switching between keep charged and self consumption, but that doesn’t stop it charging during the day. I guess the charger only/inverter only might work, but I’m not 100% sure what they affect.
Any and all suggestions gratefully received.