The Victron Argodiode Battery Isolator 80-2AC is a dual-battery charging solution that lets two battery banks share a single alternator while keeping circuits isolated when loads are drawn. Designed for marine, automotive, and off-grid power systems, it delivers reliable charging with minimal cross-draw.
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80A continuous rating: Supports reliable dual-battery charging from a single alternator.
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Dual-battery isolation: Keeps two battery banks charged from one alternator without cross-draw, so loads won’t drain the other battery.
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Low voltage drop: Schottky diodes provide typical drops of ~0.3 V at low current and ~0.45 V at the rated output.
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Compensation diode: Enables a slight increase in alternator output to offset diode voltage loss, improving overall charging efficiency.
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AC energize input: Current-limited energize input powers B+ when the engine run/stop switch is closed, helping ensure charging starts reliably.
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Prevent starter battery discharge: If you use an accessory battery, it won’t drain the starter battery.
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Simple installation: Install the isolator between the alternator output and the battery banks for immediate dual-battery charging management.
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Versatile applications: Designed for marine, automotive, and off-grid power systems for reliable dual-battery charging.
With the Argodiode 80-2AC, you gain dependable dual-battery charging from a single alternator while protecting starter and auxiliary loads. The low diode voltage drop, combined with the compensation diode, helps maximize available charging voltage and improve overall charging efficiency during demanding operation. The AC energize input ensures charging starts reliably when the engine is running, and the straightforward installation places the unit between the alternator and batteries for immediate dual-battery charging management. This setup reduces cross-drain and keeps essential systems powered even as accessory loads increase.
