Hi everyone,
I'm planning to upgrade my PV system (9.6kwc supplied by APS inverters) for a battery storage system.
I'd like to add a Multiplus 2 with Pylontech batteries.
My question is : Do I absolutely have to connect the AC out in a parallel installation or any energy transfer can be done by the AC in. I mean AC out is used for back up? So in charge mode energy comes from AC in (from PV array actually) to battery, and in inverter mode energy comes from battery to AC in ?
Thank you for yours answers