YANDINA TROLLBRIDGE24 Quick Start Manual

CHARGE 24-VOLT TROLLING BATTERIES FROM 12-VOLTS

SUMMARY

The Trollbridge24® Combiner allows you to charge your
24-volt trolling motor battery from the 12-volt alternator on
your main engine, your trailer hookup, or any single or
multi­output 1 2-volt charger.
It is designed to allow using your starting battery as one of
the trolling motor batteries. If you plan on using two 12-volt
batteries for the trolling motor and keeping the starting
battery separate, you should use the Trollbridge 12X24.
It works automatically by putting two 12-volt batteries in
series when you need to run the trolling motor, and
putting them in parallel for charging. It is bidirectional, so
when not trolling, the second trolling battery backs up your
starting or house battery.
When using the starting batteries as one of the trolling
batteries, you have to be alert to the charge remaining
so you can start the motor. Using a higher capacity
starting battery can help.

FEATURES

Fully automatic, no switches or connectors to
►
change
You can run BOTH motors at the same time.
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Manual 12/24-volt switching available
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Uses the starting battery, for a two-battery setup
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Both batteries operate in parallel when not trolling
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Eliminates the need for multiple output chargers
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Can be conveniently located with the batteries
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Rated for 12-volt alternators up to 150 amps
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Rated for 24-volt trolling motors up to 85 amps
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Green LED indicates 24-volt output active
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Optional remote indicator compatible
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Waterproof - will operate submerged in salt water
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Ignition rated for explosive atmospheres
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No voltage drop so batteries reach full charge
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No voltage drop so motor gets full power
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No wasted power, no heat sink or cooling required
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No modification to alternator or 12-volt wiring
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Simple five-wire basic installation
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Comes with all cables for basic hookup
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Draws no current when off
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No diodes to burn out if accidentally shorted
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Withstands ambient temperature to over 175° F for
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engine compartment mounting
One year factory-direct limited warranty from date of
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purchase
DANGER: During installation voltages may
be present on unattached
these do not short out to boat ground, battery
positive, or to each other.

HOW IT WORKS

The Trollbridge24 ® uses two 12-volt batteries to make 24
volts. They are in parallel at 12-volts when not trolling.
TROLLBRIDGE24
°
cables. Make sure
®
(TROLLBRIDGE24+COMBINER100)
One of these batteries can be either the normal starting
battery (Schematic A), or a 12-volt "house" battery if your
boat has one (Schematic B). If you use the house battery, it
should be connected to the starting battery with a battery
Combiner100 so both batteries get a charge from the
alternator when the main engine is running.
The other "trolling" or "booster" battery is used only for the
trolling motor and cannot be connected to anything else.
The Starting battery (or House battery if used) can also
be used for other 12-volt loads.
CAUTION If your trolling motor has a built in fish finder
transducer, some of these do not allow a common ground.
Check with the manufacturer to see if it is compatible.
Schematic A
TROLLBRIDGE24
0
. BOOSTER+
--'-
---'-,
r'--S-T A R-T I -N G '.
::: BATTERY
.·
.-:-:-:-:-:-:-:-:-:-:-:-:-:-:-.-:- -:-:-:-:-:-:-:-:-:-:-:.:-:-:-:-:-

INSTALLATION

We recommend 6-gauge wire for the motor cables and for
extending the supplied cables The 10-gauge wire
supplied is used for current limiting protection—see
explanation under WARRANTY at end of these
instructions.
DO NOT bundle the cables together inside a plastic
conduit The cables are rated for 60 amps in free air, in a
conduit they may overheat and melt the insulation.
Connections must be clean and tight
1. IMPORTANT Remove any existing jumper from battery
1 positive to battery 2negative. Sometimes this jumper
is inside the trolling motor plug.
2. Any existing battery charger cables can be left as-is.
3. Connect the BLACK Trollbridge24® ground wire to the
common negative of your main 12-volt starting or house
battery ground terminal. Lengthen with 8- or 6-gauge
wire if needed.
4. The RED cable is connect to the positive terminal of the
main 12-volt starting or house battery. If you want a
safety breaker in this circuit, it should be rated at 100
amps maximum. SHORTENING THIS CABLE WILL
VOID THE WARRANTY*.
The connections do not have to be made right on the
battery terminals but any wire or cables between the
Extending is OK.