I have 28kw of batteries 48v system. I don't yet have a victron inverter charger. It will be off grid, but via a contacted the grid will charge the batteries during off peak times in a 7 hour window.
What model inverter charger is best suited to have enough charging power to dump 28kw in 7 hours into the batteries? It would have to be able to charge with 4kwh for 7 hours. Is this achievable?
A Multiplus-II 8kVA would do the trick, I guess. Even a 5kVA model would marginally would be able to do it.
Not quite. It will put out 70A charging current which is 3.5kW for a battery on charge at a nominal 50V. It is happy to do this indefinitely and the fan noise is much reduced following the fan driver mod. Depends a bit if your battery is going to be totally flat every time and what the round trip efficiency is.
