Yes, that is correct but you are also stopping any solar being used, and it was bad wording on my part as I didn't mean just battery usage but solar as well in tandem, when the late spring/ early autumn means you are generating still at "dinner" time, so you are limited by the 3600w for a much longer period of the year. Even if you prioritise the PV first, battery second you are still limited so not making the most of what is there on offer. I hope this made more sense, I'm not feeling amazing today tbh.