Hi it works well but trying to get the Growatt (I use a SPF5000TL HVM-P) to communicate with a Lithium battery management system is a dog - I get no comms try what I may. Setting battery type to user def and filling in all the battery settings does get it on the go, but Growatt cannot read battery levels without a BMS comms and Growat will merrily go on its way ignoring the settings until the battery dies which can be a pain as you can't restart the growatt if it does not see grid and battery, leaving you with a dead battery and the only way to get the battery living again is to use a standalone mppt pv charger to revive it again.
Regards James Lishman
Pretoria, South Africa