The Trollbridge36 Combiner allows you to charge your 36 volt trolling motor battery from the 12 volt alternator on your main engine, a single output charger. or trailer hook-up. It works by putting three 12 volt batteries in series when you need to run the trolling motor and in parallel for charging. It has a built in Combiner function so the trolling batteries will never steal power from your starting battery.

   The Trollbridge36 is suitable for installations with alternators up to 100 amps and a 36 volt trolling motor up to 85 amps.

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Click to download and view the owner's instruction manual using the Acrobat viewer. (Two pages with wiring diagrams).

See the Trollbridge36 FAQ for answers to common questions and to send us a technical question.


    • Fully automatic, no switches or connectors to change
    • Compatible with THREE or FOUR battery systems.
    • In a 3 battery system, the bottom battery can be used as a house and/or starting battery
    • Built in Combiner100, no extra items to purchase
    • A single output 12 volt charger will charge all batteries
    • Can be conveniently located with the batteries
    • Rated for 12 volt alternators up to 100 amps
    • Rated for 36 volt trolling motors up to 85 amps
    • LED indicates when the trolling batteries are charging
    • Connection provided for oprional remote LED
    • Nearly UNLIMITED warranty
    • Charging is done at 12 volts so your motor never sees charging voltages
    • 100% efficient when trolling for longer run times
    • 97% efficient when charging - faster charge - no wasted power - no heating
    • Waterproof - will operate submerged in salt water
    • Ignition rated for explosive atmospheres
    • No voltage drop so batteries reach full charge
    • No voltage drop so motor gets full power
    • No wasted power, no heat sink or cooling fan required
    • No modification to alternator or 12 volt engine wiring
    • Simple 6 wire connection to three batteries and a charging input line
    • Comes with all cables for basic hookup
    • Uses no current when not charging - no on/off switch needed
    • Uses only 1/2 amp when charging
    • No diodes to burn out if accidentally shorted
    • Withstands ambient temperature to over 175 F (80 C) for engine compartment mounting
    • Remote radio link push button to enable running both motors at the same time

Click to download and view the owner's instruction manual using the Acrobat viewer.

Technical support available nearly 24/7 at