This is a link for the the MPPT controller and remote display that comes with the solar flex option in 2020.
https://jabonipowerproducts.com/wp-c...al_5.23.19.pdf
According to the link your options for battery type are
wet lead-acid, AGM, gel and lithium. You can select which type from the remote display. I wish the display also showed % of discharge or battery life like the Victron's do but it doesn't seem like that's available yet.