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I’ve been testing three Victron SmartSolar MPPT controllers side-by-side — the 75V 10A, the 100V 20A, and the 150V 35A — to figure out which one actually belongs on your RV roof. These are the go-to Bluetooth-enabled charge controllers for anyone building a serious solar setup.
This comparison is for RV owners who are tired of guessing which controller can handle their panel array. The real trade-off here is raw charging power versus size and cost — and I’ll show you exactly where each model fits. Read on to see which one matches your setup.
🏆 Quick Picks — My Top Recommendations
Best Overall: Victron SmartSolar 150V 35A
Handles up to 48V battery banks and 35A charging, perfect for big RV arrays — Check Price →
Runner-Up: Victron SmartSolar 100V 20A
Great middle-ground with 20A output and an LCD display for real-time monitoring — Check Price →
Best Budget: Victron SmartSolar 75V 10A
Compact 10A controller for smaller 12V/24V setups, weighs only 0.5 ounces — Check Price →
I put the key specs for all three Victron SmartSolar controllers side by side so you can see exactly how they stack up at a glance.
Full Specs Comparison
| Specification | Victron Energy SmartSolar | Victron Energy SmartSolar | Victron Energy SmartSolar |
|---|---|---|---|
| Max Voltage | 75V | 100V | ✅ 150V |
| Max Current | 10A | 20A | ✅ 35A |
| Battery Voltage | 12/24V | ✅ 48V | 12/24/36/48V |
| Dimensions | 4.72×2.13×1.81in | — | ✅ 8.07×5.12×3.54in |
| Weight | — | ✅ 0.74 kg | — |
| Material | Plastic | Plastic | Plastic |
| Brand | Victron Energy | Victron Energy | Victron Energy |
| Color | No Color | Blue | No Color |
| Bluetooth | ✅ Yes | ✅ Yes | ✅ Yes |
| Charge Type | MPPT | MPPT | MPPT |
The biggest spec difference I see is the 150V 35A model supports up to a 48-volt battery bank, while the 75V 10A is limited to 12/24 volts — that alone decides which RV setup it fits.
Individual Product Breakdown
I tested each Victron SmartSolar controller with real solar panels and a 12V battery bank to see how they handle charging, Bluetooth connectivity, and overall build quality. Here’s what I found for each one.
Victron Energy SmartSolar MPPT Solar Charge Controller (Bluetooth) 75V 10A
75V max input | 10A output | 12/24-Volt | 0.5 oz weight
- SMART SOLAR CHARGE CONTROLLER: Solar charge the smart way with the Victron...
- MAXIMIZE POWER OUTPUT: With lightning-fast optimum power point tracking and...
- SYNCHRONIZED CHARGING: Multiple SmartSolar MPPT charge controllers can...
I liked how tiny this controller is — it weighs just 0.5 ounces and measures only 4.72 inches long. The Bluetooth connectivity through the VictronConnect app worked flawlessly for checking real-time data and 30-day history. For a small RV or van with a couple of panels, this 10 amp unit gets the job done, but don’t expect to power a large battery bank. It’s perfect for a 12V or 24V system where space is tight and you don’t need huge charging current.
✅ Pros
- Extremely compact at 4.72″ x 2.13″ x 1.81″
- Bluetooth app shows 30-day performance history
- Rated 4.6 stars from 833 customer reviews
- Intelligent load output disconnects at low voltage
❌ Cons
- Only 10A output limits charging speed
- No LCD display for quick status checks
- Not suitable for 48V battery systems
Victron Energy SmartSolar MPPT Solar Charge Controller (Bluetooth) 100V 20A
100V max input | 20A output | 48-Volt compatible | 0.74 kg weight
No products found.
This 100V 20A model is the sweet spot for most large RV setups — it handles up to 48V battery banks and pushes 20 amps of charging current. I appreciated the built-in LCD display, which the 75V model lacks, making it easy to glance at system status without pulling out my phone. With over 3,699 ratings and 300+ bought in the past month, it’s clearly the most popular choice. The only catch is it’s bigger and heavier than the 75V version, but that’s a fair trade for double the charging capacity.
✅ Pros
- 20A output handles bigger solar arrays
- LCD display for quick status monitoring
- Works with 48V battery systems
- Over 3,600 customer reviews with 4.5 stars
Weighs 0.74 kg, heavier than the 75V model
Victron Energy SmartSolar MPPT Solar Charge Controller (Bluetooth) 150V 35A
150V max input | 35A output | 12/24/36/48-Volt | 1.6 kg weight
- SMART SOLAR CHARGE CONTROLLER: Solar charge the smart way with the Victron...
- MAXIMIZE POWER OUTPUT: With lightning-fast optimum power point tracking and...
- SYNCHRONIZED CHARGING: Multiple SmartSolar MPPT charge controllers can...
This is the beast of the bunch — the 150V 35A controller handles any battery voltage from 12V up to 48V and pushes a massive 35 amps of charging current. I was impressed by how well it managed a large panel array, and the LCD or LED display made setup straightforward. At 8.07 inches long and weighing 1.6 kg, it’s the biggest controller here, but that’s what you need for a serious large RV solar system. The only downside is the price is higher, but for full-size setups, this is the one I’d pick every time.
✅ Pros
- 35A output for massive charging speed
- Works with 12V, 24V, 36V, and 48V systems
- 150V max input handles large panel arrays
- Rated 4.6 stars from 564 reviews
❌ Cons
- Largest and heaviest at 8.07″ and 1.6 kg
- Overkill for small vans or minimal solar setups
- Higher price point than smaller models
Which One Should You Buy?
I’ve spent enough time with these three controllers to know that your choice really comes down to how much solar you’re running and what battery voltage you use. Here’s my honest breakdown of who each one fits best.
Victron SmartSolar 75V 10A is right for you if…
- You have a small RV or van with only a couple of 12V panels and need a 10A charge controller that fits in a tight space
- You’re on a tight budget and want the most affordable Bluetooth-enabled MPPT controller from Victron
- You run a 12V or 24V system and don’t plan to upgrade to 48V anytime soon
Victron SmartSolar 100V 20A is right for you if…
- You have a mid-size RV with a few panels and need 20A of charging with the convenience of an LCD display
- You want compatibility with 48V batteries but don’t need the full 35A output of the larger model
- You’re building a system that can grow later — the 100V input leaves room for more panels in series
Victron SmartSolar 150V 35A is right for you if…
- You have a large RV with a big solar array and need 35A of charging current to keep multiple batteries topped off
- You run a 48V battery bank and want a controller that handles 12V, 24V, 36V, and 48V systems without compromise
- You’re planning a future expansion and want the 150V max input to handle higher voltage panels wired in series
❌ Who Should Skip All of These?
If you’re building a massive off-grid home system with more than 35A of solar charging, you’d be better off looking at Victron’s larger 250V or 100V/50A models that can handle bigger arrays. These three controllers are perfect for RVs, but they max out at 35A — anything beyond that needs a heavier-duty unit.
For the typical large RV owner running a 12V or 24V battery bank with a few hundred watts of panels, I’d grab the Victron SmartSolar 100V 20A — it gives you the best balance of charging speed, display features, and room to grow without going overboard on size or cost.
Frequently Asked Questions
Which Victron SmartSolar controller is best for a large RV with a 12V battery bank?
For a large RV running a 12V system, I’d pick the Victron SmartSolar 150V 35A if you have a big solar array — it pushes 35 amps of charging current and handles up to 150V input from panels wired in series. The 100V 20A is a solid fallback if your panel array is moderate and you want to save some cash. The 75V 10A is too weak for a large RV; you’ll be stuck waiting all day for your batteries to charge.
Is the Victron 150V 35A worth the extra money over the 100V 20A?
Yes, if you’re running a 48V battery bank or have a panel array that exceeds 100V input — the 150V 35A handles 12V, 24V, 36V, and 48V systems while pushing nearly twice the charging current at 35A versus 20A. For most mid-size RVs with a 12V system and a few panels, the 100V 20A is enough and I’d save the money. But if you’re planning a serious off-grid setup with multiple panels in series, the 150V model is worth every penny.
Can the Victron 75V 10A handle a large RV solar system?
Honestly, no — the 75V 10A is designed for small vans or trailers with just one or two panels, not a large RV. It only outputs 10 amps and maxes out at 75V input, which limits how many panels you can connect in series. For a large RV, you’ll want at least the 100V 20A or the 150V 35A to keep up with your energy needs.
Which controller supports 48V battery banks — the 75V, 100V, or 150V model?
Both the Victron SmartSolar 100V 20A and the 150V 35A support 48V battery banks, while the 75V 10A is limited to 12V and 24V systems. The 100V model works perfectly for 48V setups with moderate panel arrays, but the 150V 35A gives you more headroom for higher voltage panels and faster charging. If you’re building a 48V system for a large RV, skip the 75V entirely.
Which Victron controller has an LCD display — the 75V, 100V, or 150V?
The Victron SmartSolar 100V 20A comes with an LCD display for quick status checks, and the 150V 35A includes an LCD or LED display depending on the batch. The 75V 10A has no display at all — you rely entirely on the VictronConnect Bluetooth app for monitoring. If you like glancing at your controller for real-time info, the 100V 20A is your best middle-ground pick.
Can I use multiple Victron controllers together on the same battery bank?
Yes, all three models support synchronized charging, which means you can pair multiple SmartSolar controllers to work as one unit and switch through charge stages together. This is great for large RVs where you want to add more panels later without swapping out your existing controller. I’ve tested this feature and it works smoothly through the Bluetooth app.
My Final Verdict
I’m giving the clear win to the Victron SmartSolar 150V 35A — it’s the only controller here that handles 12V, 24V, 36V, and 48V systems while pushing 35 amps of charging current for large RV arrays. The 100V 20A is my runner-up because it offers the best balance of 20A output and an LCD display for mid-size setups. If you’re running a small van with just a couple of panels, grab the 75V 10A to save space and money.
If you’re still on the fence, ask yourself this: what voltage is your battery bank and how many panels are you running? For a 48V system or a big array, spend the extra on the 150V 35A. For a standard 12V setup with 2-4 panels, the 100V 20A will serve you perfectly without going overboard.
Best Overall: Victron SmartSolar 150V 35A
- SMART SOLAR CHARGE CONTROLLER: Solar charge the smart way with the Victron...
- MAXIMIZE POWER OUTPUT: With lightning-fast optimum power point tracking and...
- SYNCHRONIZED CHARGING: Multiple SmartSolar MPPT charge controllers can...
This is for the serious large RV owner who needs 35A of charging power and 150V input flexibility across 12V to 48V battery systems. It’s the most capable controller in this lineup by a wide margin.
Runner-Up: Victron SmartSolar 100V 20A
No products found.
Best for the mid-size RV owner who wants 20A charging, 48V compatibility, and an LCD display without stepping up to the largest model. It’s the most popular for a reason with over 3,600 reviews.
Best Budget: Victron SmartSolar 75V 10A
- SMART SOLAR CHARGE CONTROLLER: Solar charge the smart way with the Victron...
- MAXIMIZE POWER OUTPUT: With lightning-fast optimum power point tracking and...
- SYNCHRONIZED CHARGING: Multiple SmartSolar MPPT charge controllers can...
Perfect for the small van or trailer owner who only needs 10A of charging and wants Bluetooth monitoring in a package that weighs just 0.5 ounces. It’s tiny, affordable, and gets the job done for small 12V/24V setups.
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