It really depends how fast you want to charge and what devices you will have connected draining power at the time. The key is to stay within the voltage and current input specs for the Ac200max. We use two 200w Renogy eclipse suitcases due to space and get about 500w in good sunlight. A more permanent setup could use more powerful full size panels.
Hi @Tomaquar ,
Thank you for joining our community and for your interest in BLUETTI products!
AC300+B300 support 2400W Max solar input. You can add solar panels for PV charging according to your needs. For operational guidance, please refer to the following video instruction page.