Growatt 3600 TL-X connecting after market LIPO battteries

[Pigsy]

I have a Growatt 3600 TL-X installed and x8 Eve LF230 batteries which im looking to get another x8 at some point.
I have a 24v 50amp charger i propose to install on a socket wifi controlled switch to come on when two conditions are met via time controlled and a photo cell says its bright enough outside.
i have a BMS Jiabaida 300amp AP21S002 7-21s it has a Can H & L on it not sure about this Can what it does but maybe i can buy something that will use this. what i need to know is what additional growatt device will i need to autonomously cut the grid supply and switch to batteries at night lets say and then the solar panel 3.6kw can be used in the day. i dont use much power at night so batteries shoud be enough for now atleast.

Please help

 

[DIYrich]

Isn't there a setting on the growatt to use solar and batteries first to power loads? It will take from grid only when batteries are depleted.

 

[Pigsy]

Sorry for late reply.
Not sure on my model I think I may need to buy a different model to do hybrid.