/diy/ - Do It Yourself

>>1536110
>You’d need to upgrade your inverter
No. You MAY need to upgrade the charge controller.

The solar panels connect to a charge controller.
The charge controller is connected to the battery bank.
As long as the charge controller(s) are matched to the battery bank, nothing will be amiss by adding more than the necessary panels.
If you can afford it, more panels mean you're less likely to experience power loss due to cloudy days - just what the op wanted.
The important factor when adding panels is that the charge controller be capable of handling the extra panels and protect the batteries.

The inverter is connected to the battery bank.
The inverter is selected by the power demand of the load - not the supply.