This simple device allows the charging of two separate battery banks from a single charging source such as vehicle alternator with no risk of flattening your battery bank.
By sensing the main battery voltage, the VSR (voltage sensitive relay) will only connect the secondary bank to the source when the first bank is fully charged. This ensures thats secondary bank can never drain the main bank.
Dual sense allows the unit to sense the voltage of both batteries that it is connected between. If either battery is receiving a charge the VSR will activate. This allows the charging of the second battery from an external battery charger or second charging source.
The VSR can handle charging currents up to 60A with zero voltage drop, no moving parts and encapsulated design makes it suitable for marine applications as well as split charging systems in vehicles.
Direct alternative to the Durite 60A VSR
Fitting Instructions:
The main and auxilliary batteries can be connected to either of the VSR's terminals. The VSR's MCU automatically detects which is the main and which is the auxiliary battery and charges each as required.
The small black wire should be fitted to earth.
Continuous Rating : 12VDC/60 amps
Engage Voltage: 13.3VDC
Disengage Voltage: 12.8VDC
Screw Fit Base
Not suitable for vehicles fitted with smart alternators
