Get yours today!
In the last 7 days
Delivery timeframe shown above at checkout
Unlimited lifetime support, always available.
Trade pricing on 169 authorized brands. Full OEM warranties. 7-10 business days delivery.
Shop All ProductsPremium monocrystalline and bifacial panels with 25-year warranties from authorized manufacturers.
Shop Solar PanelsString, micro, and hybrid inverters from 8+ authorized brands. Full warranty and technical support.
Shop InvertersHome and commercial battery systems from leading manufacturers. Grid-tied and off-grid options.
Shop BatteriesRoof and ground mount systems from IronRidge, Unirac, and K2. All components in stock.
Shop RackingMPPT and PWM charge controllers for off-grid and hybrid solar systems from authorized brands.
Shop ControllersHome standby, portable, and commercial generators. Automatic transfer switches and installation accessories.
Shop GeneratorsHome and commercial EV chargers. Smart connectivity and universal compatibility.
Shop EV ChargersBreakers, panels, wire, conduit, and safety switches from Square D, Siemens, Eaton, and more. Not just solar.
Shop Electrical50,000+ SKUs, 169 authorized brands. Our team helps you find the right products for any project.
Get a Quote

The Victron Argodiode 140-3AC is a cutting-edge battery isolator designed by Victron Energy. Featuring simultaneous charging capabilities, it efficiently charges multiple batteries from a single alternator without connecting them together. This product, identified by the part number ARG140301020R, ensures that an accessory battery's discharge won't affect the starter battery, offering reliable energy management and extended battery life.
The Argodiode 140-3AC allows for the charging of up to three batteries from one alternator, ensuring efficient power distribution while keeping them isolated, which prevents unwanted discharging.
This isolator utilizes Schottky diodes, minimizing voltage drop to around 0.3V at low current and about 0.45V at the rated output, enhancing charging efficiency.
Equipped with a compensation diode, it slightly elevates the alternator's output voltage to offset the diode drop, guaranteeing full battery charge.
Featuring a special energize input, it supplies power to the B+ terminal when the engine's run/stop switch is engaged, enabling the alternator start-up.
The Argodiode 140-3AC is built with a rugged design to withstand harsh conditions, ensuring durability and reliability in diverse environments.
The Argodiode 140-3AC operates by allowing a seamless flow of charge to multiple batteries while preventing backflow using diodes. This setup clarifies complex circuitry by maintaining battery separation during charging.
These diodes play a crucial role in limiting voltage drop, optimizing the overall charging process efficiency, and extending battery lifespan.
The energize circuit facilitates alternator activation by replacing direct battery connections, essential for specific alternator configurations.
This component ensures independent operation of each battery, preventing one from discharging the other and preserving battery health.
| Maximum Charge Current (A) | 140 |
| Maximum Alternator Current (A) | 140 |
| Number of Batteries | 3 |
| Nominal Battery Voltage | 12V and 24V |
| Alternator Energize Input | Yes |
| Connection Type | M8 Studs |
| Compensation Diode and Energize Connection | Faston, 6.3 mm |
| Weight | 1.1 kg (2.5 lbs) |
| Dimensions (h x w x d in mm) | 60 x 120 x 150 |
| Dimensions (h x w x d in inches) | (2.4 x 4.7 x 5.9) |
From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.
Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.
Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.
$150 Value - Free Offer (Limited Time Only!) No Strings Attached. Totally Free. Takes Less than 2 Minutes.