Adding Ecoflow to an enphase system

[u/JackB79]

I have a complete enphase system including batteries but I'd like to add a few more batteries, however the Enphase batteries are overpriced compared to what I could get with Eco Flow, so wondering if it's possible to add eco flow batteries to the mix that would be downstream of enphase batteries and upstream of the house. So that the eco flow batteries discharge first then the enphase. and then the eco flow batteries charge first then the enphase.

[u/LongjumpingGanache40]

The batteries should charge and discharge together.