REDARC's In-vehicle battery charger features technology designed to fully charge your batteries, regardless of their type or size. By providing a unique charging profile to each specific battery type, the REDARC in-vehicle battery charger is able to achieve and maintain an optimal charge in your secondary battery. The in-vehicle battery charger also features a maximum power point tracking (MPPT) solar regulator, allowing you to deliver the maximum amount of power from your solar panels to your auxiliary battery.
This is about as good as gets for a dual battery system solution, with many four wheel drivers and people towing a vehicle set up with 2 different battery technologies (start battery being lead acid) and the auxiliary battery being another, say AGM, it is difficult to get long life or full charge our of the second/auxiliary battery. This is the solution, the BCDC1225LV is a battery isolator and a 3 stage battery charger in one Isolating the start battery with the ignition off and a boost, float and absorption charger. This unit will also compensate for low voltage wiring to it and the auxiliary battery does not rely on the alternator to receive it's charge rate which in a lot of cases is not the optimum anyway, So if you need more battery capacity from your system consider this as an alternative you may have enough, just the auxiliary battery may not be getting it's full charge. This unit also features MPPT (maximum power point tracking) solar regulator for connecting in with a solar panel system as well.