The Dual Battery Isolator is designed specifically for use in multi-battery applications. If the isolator detects that

either battery has exceeded 13.2 volts, the isolator will connect them. The benefit of the dual sensing feature

allows user to charge the main battery from a solar panel or an external battery charger, on the auxiliary battery,

once the auxiliary battery reaches 80% state of charge (13.2V). This ensures you never have a drained starter

battery again. The isolator is also automatic and based on voltage, which saves installation time. When the

entire battery system drops below 12.7 volts the solenoid opens and isolates the starter battery from the auxiliary

battery.

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A safe way to charge your auxiliary battery while driving

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Cost-effective solution against a flat start battery

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The isolator monitors both battery voltages automatically

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The optional Manual Switch allows for manual control, linking the two batteries together with a

push of a button. The isolator will manually operate allowing current to flow for 60 seconds

without the alternator, even if both batteries are below 12.7V.- Part # BATISOSW

SPECIFICATIONS

INSTALLATION INSTRUCTIONS

Make sure the auxiliary battery negative is properly grounded to the

vehicle chassis.

Connect the Isolator ground terminal to chassis ground.

Connect power from the main battery to the input of the isolator.

Connect power from the output of the isolator to the auxiliary

battery.

Connect the cables in the order shown on the next page.

(Optional) Plug in the manual start switch (sold separately) into the

3.5mm jack. To manually operate the isolator, press the manual

switch and the isolator will manually operate allowing current to flow

for 60 seconds without the alternator. This is true even if both

batteries are below 12.7V.

PART #: BATISOSW.

It is recommended to install a fuse and holder or a circuit

breaker to the power wire going from main battery to isolator.

Should be rated at 300 amps or less to match battery cables.

It is also recommended to install a fuse and holder or a circuit

breaker to the power wire going from the isolator to auxiliary

battery. Should be rated at 300 amps or less to match battery

cables.

Remove any paint to ensure a good ground

connection. Note: A good ground will ensure correct

switching voltage.

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Dual Sensing Battery Isolator

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