Want to put my Multiplus II 5kW (3phase) with 44kWh Lifepo4 48V pack OFF-grid; feeding everything in the house: No more peak-taxes from the grid :) (Belgium).
In summer time the pack is charged from multiple Smartsolar and RS chargers; works fine.
In winter time I would like to charge my 48V pack from the grid, but not using the chargers in de Multiplus (because then I am ON-grid...), so I would use a charger like the Skyla TG 48/25 to charge the batteries (nice and slow with 1450W max, thus making charge of 35kW/day); that way my Multiplus configuration stays OFF grid.
Problem here: I want an absorption voltage of 55,2V and float voltage of 53,6V. The Skyla, not originally designed for Lifepo4, outputs 57V and 53V, and there is no way to control it externaly.
Question: Can the Skyla TG48/25 be used as a power source to feed a Smartsolar MPPT 150/70 VE-can that will charge the batteries? This way I can adapt my absorptions and float voltages, and even cut power on/off to my Skyla using the build in relay. Would this work and will the 57V of the Skyla start the Smartsolar MPPT up? (the +5V story...).
2nd question: can the Skyla be adapted ( internal adjustement?) to 55,2V and 53,6V output voltages? Powering it on/off could perhaps be done with a relay from the Multiplus or Cerbo GX?
Thanks for all suggestions. Would be easier if Victron gave the Skyla the intelligence of the smartsolar chargers....
