SKU: 3916347838

Victron Argodiode Battery Isolator 140-3AC

Sale price$82.69 Regular price$91.88
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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Description

Victron Argodiode Battery Isolator 140-3ACDiode 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. The Argo Battery Isolators 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

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.

The Argo Battery Isolators 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 Victron Energy’s ‘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 a special current limited energize input that will power the B+ when the engine run/stop switch is closed.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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SKU: 3916347838

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4.7 ★★★★★
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d & d
Pawtucket, US
★★★★★ 5
Genuine leather upper and well made
Size: 10, Color: Sunlight
These shoes are well made and I love the way they look. They look great with jeans or dresses. I usually wear a 9 1/2 or 10 depending on the brand. These are a size 10 and fit. Hopefully after a breaking in period the opening at the toes will loosen up. Also, when walking they make a slap slap sound. Again, hoping after they break in that won't be the case. I got a great deal and poof a couple of days later there was a slightly better deal. I wasn't sure I'd like the color but it's actually really nice. The upper is genuine leather and they are well made.
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Reviewed in the United States on December 6, 2025
M
Verified Purchase
Mytwocents
West Palm Beach, US
★★★★★ 5
Beautiful shoe
Size: 7, Color: Smoke Grey
This shoe is fairly narrow, which works fine for my narrow feet. Comfortable. Light. Nice color will match with lots of colors. Fairly comfortable but the skinny part by the toe I see how this would give anyone with a medium side foot blisters. It’s fine on me.
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Reviewed in the United States on August 23, 2025
D
Verified Purchase
Deena
Lake Worth, US
★★★★★ 4
Runs small
Size: 8.5, Color: Sandstorm
This shoe is super cute and comfy. I usually wear an 8 or an 8½. I ordered the 8½, but it was too small, so I had to send it back. I reordered a 9, and it fit perfectly.
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Reviewed in the United States on July 20, 2025
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Verified Purchase
Haley Dodaro
Omaha, US
★★★★★ 5
Love love these
Size: 7, Color: Black
Totally love these. I found them to run a bit short. I ordered a 6 1/2 (my normal size) - had to return them for a 7. But I love them.
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Reviewed in the United States on March 15, 2026
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intac
Lowell, US
★★★★★ 3
Narrow at toes
Size: 8, Color: Smoke Grey
Cute but very narrow at the toe opening. My feet are a little wide their so they are not very comfortable
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Reviewed in the United States on May 24, 2026

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