SKU: 30821840512

Victron 100A Battery Isolator Argo FET 100-3 | 3 Batteries

Sale price$144.37 Regular price$160.41
Save 10%

Pay in installments of $40.10 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Victron 100A Battery Isolator Argo FET 100-3 | 3 BatteriesReliable multi battery charging without cross discharge The Victron Argo FET 100 3 100A Battery Isolator is a high efficiency battery isolator designed to charge 3 battery banks from a single alternator or a single output battery chargerwhile keeping each battery electrically separated. That separation is the key benefit: powering lights, a fridge or a winch from your auxiliary battery bank is far less likely to flatten the starter battery, helping

Reliable multi-battery charging without cross-discharge

The Victron Argo FET 100-3 100A Battery Isolator is a high-efficiency battery isolator designed to charge 3 battery banks from a single alternator or a single-output battery charger—while keeping each battery electrically separated. That separation is the key benefit: powering lights, a fridge or a winch from your auxiliary battery bank is far less likely to flatten the starter battery, helping improve vehicle reliability for touring, marine and off-grid power setups across Australia.

Unlike traditional diode splitters, this unit uses FET isolator technology to minimise voltage drop. In practical terms, more of your alternator’s output reaches your batteries, which can support better charge acceptance and shorter run times in real-world systems. It also avoids the common need to raise alternator voltage to compensate for isolator losses—particularly helpful when you’re integrating modern battery chemistries or managing longer cable runs.

Designed for touring, marine and off-grid electrical systems

This isolator suits common 12V and 24V automotive and marine power systems with 12/24V auto-ranging operation. It’s a strong fit for caravans, 4WD dual-battery installs, work utes, boats, and remote power cabinets where you want straightforward alternator charging distribution without tying battery banks together. Each output is independently isolated, so different battery banks can be charged simultaneously while remaining protected from mutual discharge paths.

Helps alternators start charging when split charging is installed

Some alternators require a sense/return voltage on the B+ output to begin charging. When an isolator is installed, that return path can be reduced—occasionally leading to delayed or no alternator start-up. This unit includes an alternator energise input to assist with alternator excitation in these scenarios, supporting stable charging behaviour when the engine run/stop circuit is engaged. This is particularly relevant in modern vehicles and certain marine alternator configurations.

Installation notes that protect performance

As with any high-current battery isolator, overall charging performance depends heavily on cable sizing, connection quality and cable length. Keeping cable runs short and selecting an appropriate conductor cross-section helps reduce voltage drop in the wiring so the benefits of low-loss FET switching are preserved. For best results, follow Victron wiring guidance and use properly crimped lugs, secure fasteners and sound corrosion protection—especially in coastal and marine environments.

Key features

  • Simultaneous charging of 3 battery banks from one alternator or charger
  • FET technology for very low voltage drop compared with diode splitters
  • Battery bank isolation helps reduce the risk of draining the starter battery from auxiliary loads
  • 12V/24V system compatibility with auto-ranging operation
  • High-current terminals for secure connections in demanding automotive and marine installs
  • Status indication to support quick checks during commissioning and fault-finding

Very low voltage drop (typically around 0.02V at low current, averaging about 0.1V at higher currents) helps maximise charging voltage at the batteries compared with diode isolators.

Alternator energise input can assist alternator start-up in systems where the alternator needs B+ voltage present to begin charging.

Build a more dependable dual-battery or multi-battery system

If you’re planning a 3-battery split-charging setup and want a proven way to distribute alternator charging while keeping battery banks isolated, the Victron Argo FET 100-3 100A Battery Isolator is a practical, low-loss solution. Add it to your setup to support cleaner power management and more confident starts on the road or at sea.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 30821840512

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 14 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
MiniKa
Dallas, US
★★★★★ 5
Simple Mouse That Does Everything Well
Color: Black, Style: Mouse, Color: Black, Style: Mouse
I like this mouse mainly because of how comfortable it is. It fits nicely in my palm and has a good grip for daily use. The simple design with no extra buttons is actually a plus for me since there’s no accidental clicking. The scroll wheel is smooth, and the silent feature makes it great for working without noise. Battery life is solid—it only needs one AA and lasts a long time. The weight feels balanced, which makes it easy to control. I’ve used it for everything from graphic work and photo editing to coding, Office tasks, and even light gaming. Tried many others before, but this one stands out as my favorite for everyday use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
A
Verified Purchase
Alysha
Lexington, US
★★★★★ 5
The Best Logitech Mouse!
Color: Black, Style: Mouse, Color: Black, Style: Mouse
This is my favorite Logitech mouse, because of how quiet it is and how easy it is to use. You just take the usb connector out of the inside of the mouse, plug it into your computer, and then you can use your mouse. It’s very responsive, feels great in your hand, is high quality, and a good value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
J
Verified Purchase
Jack
Louisville, US
★★★★★ 5
Quiet, practical, and great for everyday use
Color: Grey, Style: Mouse, Color: Grey, Style: Mouse
I’ve been using this Logitech mouse for a while now, and it’s been a really solid everyday option. The silent clicks are honestly the standout feature they’re much quieter than I expected, which makes a big difference if you’re working in a quiet space or around other people. I really like that it has a power off button, so it doesn’t accidentally turn on in a bag or drain the battery when not in use. One thing to keep in mind is the size. It’s a bit on the smaller side, so it might not be the best fit for people with larger hands or if you prefer a bigger mouse.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
R
Verified Purchase
R
Whiting, US
★★★★★ 5
It doesn't get better than this!
Color: Black, Style: Mouse
EDIT5: 10/13/25 (Almost 2 years later) This will likely be my last edit for this mouse. Absolutely purchase this if you want a purely silent mouse with no fancy bells and whistles. It gets the job done and it gets it done WELL. After 2 years, I will say the mouse has started to show signs of actual wear and tear, which I'm sure could be fixed with a little effort/maintenance, but for how inexpensive it really is ($10-$20), I would just buy a new one. I've been playing Overwatch2 with this, Path of Exile, Final Fantasy 14, Hades 2, City Skylines and pretty much every other genre and have had no issues (except having more buttons in an MMORPG is always great!). Just buy it, you really can't go wrong! EDIT4: 5/31/25 (17 months later) - Middle mouse button (pressing the wheel down) is starting to miss a few clicks. I suspect it's just dirty and I need to clean it out, but I do use the button quite heavily so it may also just be wearing down. For the price and how much I use it, I can't really complain EDIT3: 2/22/25 (14 months later) - Finally changed the battery it came with after mouse indicated to. This is 14 months after purchase with, I would estimate, 10-12 hours of daily use! EDIT2: 2/6/25 (14 months later) - The mouse is still going, same as my last review! Batteries still haven't been changed, nothing really to note - no performance drops, no double button presses, no broken mouse wheel, etc. Still an absolute 10/10 purchase! EDIT: 10/12/24 (10 months later) - This mouse is still going strong! I haven't changed the battery yet, everything continues to function perfectly. The mouse wheel has lost some of it's quietness, but unless you're hitting a 1000 RPM scroll session, the noise is still not audible past a foot or so in the dead of night. I'm sure you could easily lube the wheel if desired. Still a 10/10, this is the silent mouse for you! This mouse is a testament to the ingenuity of man. I've tried "silent" mice in the past and have never found anything that didn't still leave a pretty audible click in the middle of the night, so call me a skeptic. This mouse though - this is the real deal. There is no click, there is only a slight tap which you definitely can't hear from across a room, let alone 2 feet from you. The wireless works flawlessly, and the receiver tucks right into the mouse from the bottom (with the battery). It's a simple plug-and-play. The packaging is extremely easy to open, you just slide the cover from the bottom of the mouse, remove the received and plug it into your computer, slide the mouse to On, and you're all set! The battery itself seems to last forever; I've used the mouse for an entire month almost thus far, daily for 12+ hours and the battery is still going (Logitech claims 2 years!). The mouse itself has an auto-shutoff features that kicks in pretty fast after inactivity, but there is no pause or wake-up time afterwards; it continues to function flawlessly and immediately after going to sleep compared to other mice that need to reboot and reconnect for a few seconds before being able to be used. The only caveat I can say about the battery is that it doesn't fit in super snugly, and if you're someone who lifts their mouse a lot to move it around, the mouse may stutter as the battery shifts. I solved this problem by sticking a small piece of cardboard between the cover and battery. The mouse is also smaller than your average gaming mouse, but it's extremely comfortable. The ergonomics are impeccable, and the mouse feels constantly cool to the touch. There is no hand fatigue from using the mouse for long periods of time. There are grooves on the sides of the mouse for your thumb to grip, no sliding around. The scroll wheel works smoothly and is also silent - even quieter than the left and right clicks. There are no other buttons (side buttons, DPI swap, etc). There is no input lag, and I've played plenty of competitive FPS matches with this mouse and have never noticed an issue (aside from the battery stuttering I fixed). All in all, if you need a silent mouse, look no further. For the price, the quiet and quality are unbeatable, and it knocks multiple, more expensive mice out of the water. Logitech!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 4, 2023
G
Verified Purchase
george
New York, US
★★★★★ 4
Quiet.
Color: Black, Style: Mouse
Good basic mouse for the price. Feels a little light but functions well. The silent feature is nice. Almost no clicking sound.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026

recommand products