Victron Energy BlueSolar MPPT 75/15
(4 reviews)
A compact, well-priced MPPT charge controller from a name the off-grid world trusts: the ideal choice for a small van, boat, or cabin solar setup.
Characteristics
- Charge current: 15A
- PV input: Max 75V
- Type: MPPT
- Battery voltage: 12/24V (auto)
- MPPT, up to 30% more yield than PWM
Detailed overview: Victron MPPT 75/15 solar charge controller
The BlueSolar 75/15 from Victron Energy is an MPPT (Maximum Power Point Tracker) solar charge controller, one of the most accessible in the range. Placed between the panels and the battery, it constantly locates the panels' maximum power point, which noticeably improves energy harvest, especially under cloudy skies, up to 30% more than a simple PWM controller.
It accepts a panel (PV) input voltage up to 75V and delivers a charge current of 15A, for a recommended solar array of around 220W at 12V (440W at 24V). Battery voltage, 12 or 24V, is detected automatically. Its BatteryLife function intelligently adjusts the charge threshold to extend battery life, and it protects against overcharge, deep discharge, and reverse polarity.
Compatible with lead-acid batteries (gel, AGM, flooded) and lithium, it is monitored and configured via an optional VE.Direct Bluetooth dongle, sold separately, or via the SmartSolar version with built-in Bluetooth. US reviewers note the dongle's Bluetooth range can actually beat the built-in SmartSolar radio, worth considering if the controller will sit far from where you check it.
Compact at 113 x 50 x 100mm and 0.6kg, with an IP43 enclosure rating, it is a solid pick for a van, boat, RV, or small cabin solar setup, sold in the US through Victron's dealer network rather than direct from the manufacturer.
Full specifications
Detailed characteristics (EAN: 8719076040804)
Solar section
| MPPT controllers?Number of built-in MPPT solar controllers (lets you connect panels facing different directions). | 1 |
|---|---|
| Max solar input?Maximum connectable PV power. | 440 W |
Connectivity
| Bluetooth?Monitoring and settings via an app over Bluetooth. | No |
|---|---|
| Wi-Fi?Remote control and updates over Wi-Fi. | No |
Durability and format
| Ingress protection?Water and dust resistance (IP rating). | IP43 |
|---|---|
| Weight?Weight of the battery. | 1.3 lb (0.6 kg) |
| Dimensions (L × W × H)?Length × width × height, in millimetres. | 4.4 × 2 × 3.9 in (113 × 50 × 100 mm) |
User manual / Instructions for use (PDF)
Our tester's review: Julien De Jurquet
The BlueSolar 75/15 is the kind of part US van-builders and boat owners tend to buy once and never think about again. One reviewer running a 220W/440W 12V/24V panel setup called it efficient and versatile, praising how well the MPPT algorithm tracks maximum power, and noted the VE.Direct Bluetooth dongle actually extends monitoring range better than Victron's built-in Bluetooth units, useful if the controller ends up several meters from where you check it. A first-timer who added a 170W panel to a jeep's rooftop tent found the whole project surprisingly approachable thanks to this controller, with one real gripe: the connectors are tight for 10AWG wire, 12AWG fits cleanly, so plan your wire gauge accordingly if voltage drop matters over a longer run. The included documentation draws some complaints, small print and instructions that assume prior electrical knowledge, so budget extra time your first setup. Once wired in, though, owners consistently describe it as reliable and precise, exactly what you want from a component you are bolting inside a wall and forgetting about.
In-depth review Victron BlueSolar MPPT 75/15: our full review 4.0/5 Read our full review → Efficiency not measured Portability and size not measured Weather resistance not measured Output ports not measured Capacity and expansion not measured Solar input and MPPT 4.2 Control and smart features 3.5 Installation and compliance not measured Build and endurance 4.2 Battery compatibility 3.8 Safety and protections 4.3Frequently asked questions: Victron MPPT 75/15 solar charge controller
An MPPT controller like the BlueSolar 75/15 tracks the panels' maximum power point and converts excess voltage into usable current. It recovers up to 30% more energy than a PWM controller, especially in low light.
It accepts an input voltage up to 75V and 15A of charge current, around 220W of panels at 12V and up to 440W at 24V. Beyond that, a larger model (100/20, 150/35...) is needed.
The BlueSolar itself needs an optional VE.Direct Bluetooth dongle, sold separately, for wireless monitoring. For built-in Bluetooth, look at the SmartSolar MPPT 75/15 version, otherwise identical in operation.
The terminals fit 12AWG wire cleanly. Reviewers note 10AWG, sometimes preferred to cut voltage loss on longer cable runs, is a tight fit at the connectors.
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Published on 02/09/2026