A friend got this system installed: three Multiplus 48/3000 inverters configured for 3-phase operation, operating with 4 pcs Monbat ML220C batteries. The batteries are charged with 3 Bluesolar MPPT 150/70 chargers.
My question is: are the Bluesolar chargers necessary? Couldn't the Multiplus inverters do the charging directly, without using the separate MPPT chargers? Or is it any advantage on doing this?