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Victron Energy Argo FET Battery Isolators


In Stock

Option: 100A - 2 Batteries

  • 100A - 2 Batteries
  • 100A - 3 Batteries
  • 200A - 2 Batteries
  • 200A - 3 Batteries

All Prices are Inclusive of VAT

SKU: ARG100201020 (R)Categories: Battery Isolators, Victron Energy


Similarly to diode battery isolators, Victron Energy Argo 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.

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 100A 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 50A through a cable of 10mm2 cross section (AWG 7) and 5m length (15 ft) will result in a voltage drop of 0.35 Volt.

Alternator energise 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 energise input that will power the B+ when the engine run/stop switch is closed.

Further Information

Victron Energy Argo FET Battery Isolators - Data/Tech Sheet

Victron Energy Argo FET Battery Isolators - User Manual

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