SmartBank is simply the most effective battery split charging system available today. It allows two battery banks to be charged simultaneously on a vehicle, whilst protecting engine batteries from being over-discharged by auxiliary loads.
It works by monitoring both battery banks. When it senses that either battery bank is being charged (ie, engine cranking batteries from the alternator or auxiliary batteries from an APU), it will allow power to flow through to the other battery. Under no circumstances will batteries be overcharged or allowed to discharge into other banks.
It is available for use with vehicle electrical systems up to 300 A and 600 A.