Victron MPPT Solar Charge Controllers
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Victron Energy Charge Controllers: How to Find the Right One
A solar charge controller is connected between the solar panel and the battery. It charges the battery at the correct voltage, protects it from overcharging, and extracts as much energy as possible from your panels. Victron Energy offers three series for this purpose: SmartSolar MPPT, BlueSolar MPPT, and BlueSolar PWM.
What the Numbers in the Name Mean
Every Victron Energy MPPT charge controller has two numbers in its name, for example, 100/30. The first number is the maximum input voltage from the solar panels in volts; the second is the maximum charging current in amperes. A 100/30 model can therefore handle up to 100 V from the panels and charges the battery with up to 30 A.
The smaller models up to the 100-V class work with 12V and 24V batteries. Starting with the 150-V class, the chargers also charge 48V systems.
SmartSolar, BlueSolar, or PWM—a comparison of the series
- SmartSolar MPPT: MPPT technology with built-in Bluetooth; data can be viewed via the VictronConnect app. Suitable for all system sizes if you want to monitor output and battery status on your smartphone.
- BlueSolar MPPT: MPPT technology; data retrieval via VE.Direct with a Bluetooth dongle or MPPT Control. For systems of all sizes, if an affordable entry-level option is more important to you than the app.
- BlueSolar PWM: PWM technology; the PWM-Pro can be configured via remote control or USB cable. For small 12V or 24V systems where the module and battery voltages match.
Our SmartSolar controllers range from 75/10 to 250/100, and the BlueSolar MPPT models from 75/10 to 150/70. Larger models are available with screw terminals (Tr) or MC4 connectors for the solar cables; some also feature a VE.Can connection for networking with other Victron devices.
Accessories for Victron Charge Controllers
In the charge controller accessories section, you’ll find VE.Direct cables, the Bluetooth Smart Dongle for BlueSolar controllers, the clip-on display for SmartSolar, and WireBoxes that cover the terminal blocks.
FAQ – Frequently Asked Questions About Victron Charge Controllers
What do numbers like 100/30 mean for Victron MPPT controllers?
The first number is the maximum module voltage in volts; the second is the maximum charging current in amperes. A 100/30 can handle up to 100 V input voltage and charges at up to 30 A.
What is the difference between SmartSolar and BlueSolar?
Both use MPPT technology. SmartSolar has built-in Bluetooth, so you can read the controller’s data directly using the VictronConnect app. With BlueSolar, you’ll need the VE.Direct Bluetooth Smart Dongle or the MPPT Control remote.
When is a PWM controller sufficient instead of an MPPT controller?
A PWM controller is suitable for small systems where the panel voltage matches the battery voltage well—for example, a 12V panel connected to a 12V battery. If the panel voltage is significantly higher, an MPPT controller will extract more energy.
Which Victron charge controller is right for my solar system?
As a rule of thumb, divide the module power by the battery voltage. 400 Wp connected to a 12V battery equals about 33 A—so you’ll need a controller with at least 35 A, such as the 150/35. Also make sure that the open-circuit voltage of your modules stays below the first number in the controller’s name, even in cold weather. Our team will be happy to help you make the right choice.
Can I use Victron MPPT controllers with LiFePO4 batteries?
Yes. SmartSolar and BlueSolar MPPT controllers have adjustable charge profiles, including one for lithium batteries. Set the profile to match your battery before the first charge.
What do “Tr” and “MC4” mean in the model name?
Tr models have screw terminals for the solar cables. MC4 models have MC4 connectors to which you connect the module cables directly. Electrically, both variants are identical.
How do I read data from a BlueSolar controller using my smartphone?
Via the VE.Direct port. Plug in the VE.Direct Bluetooth Smart Dongle, and the free VictronConnect app will display power output, charge current, and battery voltage.
You can find solar charge controllers from other manufacturers in the Solar Charge Controllers category.