For use when the starting battery is going to be used as one of the trolling batteries or you already have an isolated output from the main motor. For installations where the starting battery needs to be protected from discharging into the trolling motor you need the Trollbridge 12X24 .
The Trollbridge24® Combiner allows you to charge your 24 volt trolling motor battery from the 12 volt alternator on your main engine or trailer hook-up. It works by automatically putting two 12 volt batteries in series when you need to run the trolling motor and in parallel for charging.
The Trollbridge24 is suitable for installations with alternators up to 100 amps and 24 volt trolling motors up to 85 amps.