NVX XSBi80 Manual Download Page 2

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Smart Battery Isolator Manual

XSBi80/XSBi200/XSBi500

The Smart Battery Isolator is designed specifically for use in multi-battery applications. The XSBi series 
of isolators primarily monitors the main starter battery voltage. Once the starter battery voltage 
reaches 13.2 volts, the solenoid automatically connects the auxiliary battery to the charging system.
When the whole system drops below 12.7 volts the solenoid opens and isolates the starter battery from 
the auxiliary battery. This ensures you should never have a drained starter battery again.

Part Number
System voltage
Auto-on voltage
Auto-off voltage
Turn on delay
Turn off delay
Max continuous current
Standby current

XSBi80

 12V

13.2V

< 12.7V

5 sec

10 sec

80 Amp

< 5mA

XSBi200

 12V

13.2V

< 12.7V

5 sec

10 sec

200 Amp

< 5mA

XSBi500

12V

> 13.2V
< 12.7V

5 sec

10 sec

500 Amp

< 5mA

SPECIFICATIONS

INSTALLATION INSTRUCTIONS

Make sure the auxiliary battery negative is properly grounded to the vehicle chassis.

Connect the Smart Battery 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 secondary battery.

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

(Optional) Plug in the manual start switch into the 3.5mm jack. To manually operate 
the Smart Battery Isolator, press the manual switch and the isolator will manually 
operate for 60 seconds.

Remove any paint to ensure a good ground connection.

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

the power wire going into the isolator

It is recommended to install a fuse holder or a circuit breaker out of 

the isolator to the secondary battery.

Note: A good ground will ensure correct switching voltage.

Start

Terminal

Manual 

Switch

Ground 

Wire

 (BLACK)

Auxiliary 

Terminal

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