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Argo FET Isolators are High Efficiency - Low Voltage Drop!

Victron Energy FET Battery IsolatorsSimilarly to silicon diode type battery isolators, FET isolators allow simultaneous charging of two or more batteries from one alternator (or a single output battery charger), without connecting the batteries together. It allows discharging of batteries independently of each other without effecting the other. Popularly used on Rv's, Boats, Commercial vehicles where both starter and house batter banks exist.

In contrast with diode battery isolators, FET isolators have virtually no voltage loss. Voltage drop is less than 0.02 Volt at low current and averages 0.1 Volt at higher currents.


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Argofet 100-2 Two Batteries 100A
Price: $100.34-$114.75
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Victron Energy Item #: ISV20005 -

Victron Energy Argo FET Battery Isolator 100 Amp 2 or 3 Batteries Similarly to diode battery isolators, FET isolators allow simultaneous charging of two or more batteries from one alternator (or a single output battery charger), without connecting the batteries together. In contrast with diode battery isolators, FET isolators have virtually no voltage loss. Voltage drop is less than 0.02 Volt at low current and averages 0.1 Volt at higher currents. Specifications Argo FET Battery Isolator...

Argofet 100-2 Two Batteries 100A
Price: $120.00-$140.00
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Availability: Back Order
Victron Energy Item #: ISV20015 -

Victron Energy Argo FET Battery Isolator 200 Amp 2 or 3 Batteries Similarly to diode battery isolators, FET isolators allow simultaneous charging of two or more batteries from one alternator (or a single output battery charger), without connecting the batteries together. In contrast with diode battery isolators, FET isolators have virtually no voltage loss. Voltage drop is less than 0.02 Volt at low current and averages 0.1 Volt at higher currents. Specifications Argo FET Battery Isolator...

When using ARGO FET Battery Isolators, there is no need to also increase the output voltage of the alternator. Care should taken however to keep cable lengths short and of sufficient cross section.

Example:
When a current of 100 A flows through a cable of 50 mm2 cross section (AWG 0) and 10 m length (30 ft), the voltage drop over the cable will be 0.26 volt. Similarly a current of 50 A through cable of 10 mm2 cross section (AWG 7) and 5 m length (15 ft) will result in a voltage drop of 0.35 Volt.

Alternator energize input

Some alternators need DC voltage on the B+ output to start charging. Obviously, DC will be present when the alternator is directly connected to a battery. Inserting a Diode or FET splitter will however prevent any return voltage/current from the batteries to the B+, and the alternator will not start.

The new Argofet isolators have a special current limited energize input that will power the B+ when the engine run/stop switch is closed.

Argo FET Isolator Connection Diagram