I have the same battery and using a voltronic axpert iii inverter/mppt but dont know how to set up the axpert to optimum settings for the battery. Currently have the bulk charge at 56.2v and float charge at 54v and the cutoff voltage at 46v. Please help!I bought a blue carbon 48v 200ah. Its well built, at least the outside is. It arrived showing 54.0v on its built in voltmeter. Wish it had a way to access the bms. So far all is well but need advice on setting up the bulk, floating and discharge voltages of the inverter/charger.