The ProStar MPPT solar charge controller with TrakStar Technology is an advanced maximum power point tracking (MPPT) battery charger for off-grid photovoltaic (PV) systems up to 1200 watts. This controller allows two modules in series on a 12V battery system and two or three modules in series on a 24V battery system. Detailed battery programming options allow for advanced battery support for the latest Lithium, Nickel Cadmium and Lead Acid battery types.