ARG080201000 (R)

Victron Diode Battery Isolator Argodiode 80-2AC 2 Batteries 80A

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Victron Diode Battery Isolator Argodiode 80-2AC 2 Batteries 80A. Diode Battery Isolators allow simultaneous charging of two or more batteries from one alternator, without connecting the batteries together. Discharging the accessory battery for example will not result in also discharging the starter battery. Low voltage drop due to the use of high efficiency Schottky diodes.

The Victron Diode Battery Isolator Argodiode 80-2AC feature a low voltage drop thanks to the use of Schottky diodes: at low current the voltage drop is approximately 0,3 V and at the rated output approximately 0,45 V. All models are fitted with a compensation diode that can be used to slightly increase the output voltage of the alternator. This compensates for the voltage drop over the diodes in the isolator.

Please see our book ‘Energy Unlimited’ or ask for specialist advice when installing a diode isolator. Simply inserting the isolator in the cabling between the alternator and the batteries will slightly reduce charge voltage. The result can be that batteries are not charged to the full 100% and age prematurely.

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 ‘AC’ diode isolators feature.

Dimensions (HxWxD)60 x 120 x 75
Display Read OutNo
Feature80 Amp Maximum Charge Current
Feature2 Battery Charge
Warranty2 Yrs
Weight1.3 Kg


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