FoxESS Community - Owners & Installers Forum

Need to isolate the system, so at that time doing a full power down is probably easiest option.

The BMS 2 unit will need dip turning to 2 currently on 1. As going from 3 to 4 batteries

The first(top) battery has dip set to 1 rest arent set, believe the bms2 automatically addresses anyway so miffed as to why this is set to 1.

Is this actually significant?

Ie can I put the new battery at the top, and leave the dips as is or if at the top do I need to switch new battery to 1 and rest to zero, or can I set all to zero?

Going to fit after tea, as I will have run the batteries down then from full to about 70-80% depending on what we are having then discharge the rest to 50%.

If the batteries have latest firmware on then the address dip switches should not be set and should all be off, as it was the first battery in the stack it didn’t matter as it always was 1 anyway but turn them off when you add the new one.

Once you have added the new battery check the battery slave firmware are the same and update if necessary.