QuadBoss Battery Isolator P/N 608899
140A, VOLTAGE INDUCTION
For 12V DUAL BATTERY SYSTEM
Thank you for purchasing the QuadBoss Battery Isolator.
Read these instructions carefully and thoroughly before operating this unit.
1. WARNING! Avoid risk of fire. Prior to installation remove the cables from the negative terminals of
all the batteries on your vehicle.
2. Inhalation Hazard! Do not operate an engine in a closed area or in a poorly ventilated area.
3. Prior to installation, make sure the vehicle’s transmission is placed in “PARK” or “NEUTRAL” and the
emergency brake is applied.
4. Always keep hands, fingers, and body away from the moving parts and hot parts of the engine.
5. Do not use this product if under the influence of alcohol or drugs.
6. WARNING! Avoid eye injury. Make sure to wear ANSI-approved safety impact eye goggles when
installing this product, and when working with tools and equipment.
7. WARNING! The warnings and cautions discussed in this instruction manual cannot cover all possible
conditions and situations that may occur. It must be understood by the operator that common sense
and caution are factors which cannot be built into this product, but must be supplied by the operator.
FEATURES
- Designed for dual battery systems
- Suitable for 12V charging systems
- Surge protection
- Easy to install
- Automatically senses voltage level of main battery
How does it work?
1. When the engine is started and the voltage of start battery is higher than cut-in volts, the
Smart battery isolator (SBI) keeps engaging, two batteries (start and house)are charged simultaneously.
Unit Indicator (LED) is on.
2. When the engine is stopped, the batteries no longer have a charge from the alternator, and
The loads connected with the batteries begin to deplete them. Unit Indicator (LED) is on.
3. When the voltage drops below cut-out volts for 5 seconds, the SBI senses it and
disengages, separating both batteries. This can save power of your start battery from being drained by
over loads on house battery. UNIT Indicator (LED)is off.
4. When the vehicle is restarted, the start battery has enough power to crank the engine, and
the engine is powering the alternator, when the start battery has reached the cut-n volts, the
SBI engaged again. Unit Indicator (LED)is on.
Wiring Diagram
Specifications
Be sure to select the correct size cable refer to the voltage drop chart.
QuadBoss Products
877-847-1558
www.quadboss.com