I have four MPPTs on a brand new boat installed at the factory, all 4 show PV voltage but only one has output wattage, all four or 48 V and hooked in parallel and run through and the cervo GX
asked
Only 1 of 4 MPPT's charging
Hi @bbsuper250
The most common reason is that the battery is at the target voltage, and only one MPPT is necessary to keep it there.
A good way to test this is if you turn on large loads, as many as possible, you should see production start from the other MPPTs as the battery voltage drops.
@Guy Stewart (Victron Community Manager) Quick related Q on the RS 450 units: Do their individual MPPT trackers sync like separate MPPT in a VE.CAN or VE.SMART network, or are they independent?
Thank you Guy for the answer… I will check the target voltage but the SOC is only 48% and all 4 MPPTs show they are in bulk… that is why I didn’t think to check the voltage settings
There are no faults or errors showing and the PV voltage is almost double the battery voltage… When I get back to the boat, I plan on looking at the target voltage and turning off the working MPPT to see if one of the others steps up
