Hello, I will try to be precise. I have contacted my distributor of victron devices, and he has stopped selling, so I wonder if you could give me an indication here.
My system. Camper van, lifepo4 280ah 12v battery. 5 100W solar panels in parallel, mppt 100/50, orion 12/12, smartshunt, multiplus 12/1600/70 and CerboGx.
I would like to have the panels in series, but they can reach 116v and my charger is the 100/50. I can't fit another 100W plate to do series-parallel.
Since 9 days ago, my batteries have been discharging down to 20% (then I get the vrm warning). During the day the solar generates about 40-60W on average, before (even last summer, I had about 150-160wh).
Since a few days ago, the plates do not generate more than 40-60W, at some point of the day they can reach 150W (but only for a moment), then sometimes it goes down to 0W (lots of sun and no clouds).
I have checked all the connections and everything seems to be in order. I just need to check the mc4 connections of the solar panels, but it is quite inaccessible for maintenance and I would like to discard everything else first.
The battery is below 80% (I have done the tests with the SOC from 20% to 90%, same results.)
I have tried charging the battery from the alternator (Orion) it takes 18amps, and from the multiplus (takes 65amps) no problem. The battery is fine, and the cells are balanced.
A few days ago (as always, fine)
Now:
Just to add it, half of the time, the SCC is not giving any W as can be seen here (it never did it something like this, at least with the battery not full).
Thank you for your time, I hope I can fix it..