I want to share my experience with the cons of the 48v system that I did not know first.
1. We are almost certainly stuck with Growatt if going 48V, 48V MPP inverter are taking $1400+, and there are no other options. If we want to go with Victron, the issue is the biggest 48V AC-DC charger we can get in the market is a 48V 25A 120V Battery Charger by EG4, which is very inefficient for a 4KW RV generator because it only puts about 50% of the load.
2. There is no cheap Bluetooth battery monitor for a 48v system.
3. For some random reason, 12v batteries in a series could lose balance by themselves; it needs to be balanced every now and then.
4. If you go 24V batteries, 24V 100AH is often more expensive than 12V 200AH
5. Biggest issue: if you have a bunch of small areas that are not at the same angle, you will want more than one MPPT charger for each region. There is no dirt cheap MPPT for a 48v system! 48v MPPT is almost always for big arrays! The cheapest I can find is Victron 100 | 20 MPPT, which supports 48V, but is still $170+.
1. We are almost certainly stuck with Growatt if going 48V, 48V MPP inverter are taking $1400+, and there are no other options. If we want to go with Victron, the issue is the biggest 48V AC-DC charger we can get in the market is a 48V 25A 120V Battery Charger by EG4, which is very inefficient for a 4KW RV generator because it only puts about 50% of the load.
2. There is no cheap Bluetooth battery monitor for a 48v system.
3. For some random reason, 12v batteries in a series could lose balance by themselves; it needs to be balanced every now and then.
4. If you go 24V batteries, 24V 100AH is often more expensive than 12V 200AH
5. Biggest issue: if you have a bunch of small areas that are not at the same angle, you will want more than one MPPT charger for each region. There is no dirt cheap MPPT for a 48v system! 48v MPPT is almost always for big arrays! The cheapest I can find is Victron 100 | 20 MPPT, which supports 48V, but is still $170+.