I currently own the AC200 max with 3 PV200 panels and I purchase the AC300 with PV 420 panels. Can I use the panels together?
@robbrantly Different models of solar panels cannot be connected and used together due to differences in their internal circuits. Only PV420 connects to PV420, PV200 connect sto PV200.
if you manage to put all your pv420 panels on a single solar input (for example dc1) you can put your 3 pv200 solar panels in series on the second solar input dc2 of your ac300. As the two solar inputs dc1 and dc2 are independent (check in the configuration that “PV Parallel Enable” is OFF) this will work in compliance with bluetti admin’s recommendations not to mix panels of different characteristics.