NVX.COM
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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