Ultraflex Group

Battery isolators

Battery isolators Accessories VICTRON ENERGY® - Battery chargers, inverters, batteries

Battery isolators

Battery isolators allow simultaneous charging of two or more batteries from one alternators, without connecting the batteries together. Discharging the accessory battery, for example, will not result in discharging the starter battery.

 

ARGO – DIODE BATTERY ISOLATORS

The Argo battery isolators feature a low voltage drops thanks to the use of Schottky diodes: at low current the voltage drop is approximately 0,3V and at the rated output approximately 0,45V.
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.

 

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

 

ARGO FET BATTERY ISOLATORS: NO VOLTAGE LOSS

Differently from diode battery isolators, FET isolators have virtually no voltage loss. Voltage drop is less then 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 be taken however to keep cable lengths short and of sufficient cross section.

 

Alternator energize input

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


ARGO

MODEL MAX CHARGE CURRENT

ALTERNATOR

MAX CURRENT

No. of

BATTERIES

DIMENSIONS

H x W x D mm (")

WEIGHT kg (lbs)
80-2AC 80A 80A 2 60x120x90 (2.4x4.7x3.5) 0.6 (1.3)
100-3AC 100A 100A 3 60x120x115 (2.4x4.7x4.5) 0.8 (1.8)
120-2AC 120A 120A 2 60x120x115 (2.4x4.7x4.5) 0.8 (1.8)
140-3AC 140A 140A 3 60x120x150 (2.4x4.7x6.0) 1.1 (2.4)
160-2AC 160A 160A 2 60x120x150 (2.4x4.7x6.0) 1.1 (2.4)
180-3AC 180A 180A 3 60x120x200 (2.4x4.7x7.9) 1.5 (3.3)

Part No. Model Description
67435R 80-2AC Argo 80-2AC 2 Isolator - Battery 80A
64984K 100-3AC Argo 100-3AC 3 Isolator - Battery 100A
64985M 120-2AC Argo 120-2AC 2 Isolator - Battery 120A
64986P 140-3AC Argo 140-3AC 3 Isolator - Battery 140A
64987S 160-2AC Argo 160-2AC 2 Isolator - Battery 160A
64988U 180-3AC Argo 180-3AC 3 Isolator - Battery 180A

ARGO FET

MODEL MAX CHARGE CURRENT

ALTERNATOR

MAX CURRENT

No. of

BATTERIES

DIMENSIONS

H x W x D mm (")

WEIGHT kg (lbs)
100/2-FET 100A 100A 2 65x120x200 (2.6x4.7x7.9) 1.4 (3.1)
100/3-FET 100A 100A 3 65x120x200 (2.6x4.7x7.9) 1.4 (3.1)
200/2-FET 200A 200A 2 65x120x200 (2.6x4.7x7.9) 1.4 (3.1)
200/3-FET 200A 200A 3 65x120x200 (2.6x4.7x7.9) 1.4 (3.1)

Part No. Model Description
64989W 100/2-FET Argo-1002 FET 2 Isolator - Battery 100A
64990E 100/3-FET Argo-1003 FET 3 Isolator - Battery 100A
64991G 200/2-FET Argo-2002 FET 2 Isolator - Battery 200A
64992J 200/3-FET Argo-2003 FET 3 Isolator - Battery 200A