Dual Battery Sensing Isolator 300 Amp – Automatic

The Dual Battery Sensing Isolator monitors both the starting battery and the auxiliary. If the unit detects that either battery has exceeded 13.2 volts, then 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.

• A safe way to charge your auxiliary battery while driving

• Cost-effective protection against a flat starter battery

• The isolator monitors both battery voltages

• 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

NOTE:

• Use the LFP12VXXXAREG when charging a lithium battery from the alternator and starter battery. There are 100A and 200A voltage regulators available. 
• Use the BATISO300 when you want to keep your starting battery at 100% while discharging from auxiliary batteries when the vehicle is off.
• Use both the LFP12VXXXAREG and BATISO300 when charging a lithium battery from the alternator and a starter battery and you need the starting battery to remain fully charged while discharging auxiliary batteries with the vehicle off