You’ll need a solar charge controller if you’re thinking about installing a solar power system for your home, RV, or off-the-grid hideaway. To ensure that your system functions smoothly and safely, these components manage the power transfer from your solar panels to your batteries. We looked at 32 of the most popular solar charge controllers on the market to help you discover the best one. Because it can connect up to four solar panels in series, the EPEVER 40A MPPT solar charge controller was named Editor’s Choice. It also includes a remote temperature sensor and is capable of delivering up to 40 amps of electricity. We also compiled a list of nine other high-quality solar charger controllers to assist you in selecting the right one for your solar system. We had a lot to think about when deciding on the best solar panel charge controllers.
We started by determining whether each controller is MPPT-type or PWM-type, which has a significant impact on your system’s efficiency. Because your solar charge controller must be sized suitably for your panels and battery, we also evaluated the battery voltage, input voltage, and output current. We spent a total of tens of hours studying solar charge controllers and reading user reviews. The table below lists all ten of the controllers we tested, followed by in-depth reviews of each. Continue reading our shopping guide for additional information on selecting the finest solar controllers for your needs.
Review of the Top 3 Solar Charge Controllers for 2022
MPPT is a type of MPPT. 12V/24V battery voltage Type of battery: LiFePO4 Lithium; Lead Acid 100V maximum input voltage 40A maximum current output Additional features include: the ability to connect up to four 12V solar panels in series; Remote Temperature Sensor with LCD Display (RTS) Interface EPEVER’s solar charge controller is the greatest MPPT solar charge controller on the market right now, in our opinion. It has a tracking efficiency of 99.5 percent and a maximum charge conversion efficiency of 98 percent, so you can rest assured that no power is lost between your solar panels and your batteries. This solar controller also has the advantage of being compatible with a wide range of solar systems. It works with both lead acid and lithium-ion batteries that have a voltage of 12 or 24 volts.
The maximum voltage of 100 volts on the panel side is enough to handle four ordinary 12-volt panels connected in series. If your battery uses less than 40 amps, you may easily set the controller to limit the currency output as well. The fact that this solar charge controller has a remote temperature sensor interface was very appealing to users. This enables it to detect when your battery is overheating and cut off charging to avoid damage. This is a significant benefit since your controller can then protect the most critical components of your solar system. The only complaint people had was that EPEVER’s customer service sometimes be lacking when difficulties arose. The most common complaint from consumers was that the LCD screen would switch off after a few months of use, however this was an unusual occurrence. Why are we so taken aback? Tracking efficiency is really high. Temperature monitoring from afar Four 12-volt panels are supported. Current output that can be programmed Lithium-ion batteries are compatible. What drawbacks should you be aware of? The customer service isn’t outstanding.
2 MPPT Solar Controller with the Most Versatile Functions Renogy Rover MPPT Solar Charge Controller, 40 Amp 12V/24V DC Input
Features MPPT is a type of MPPT. 12V/24V battery voltage Sealed, Gel, Flooded, and Lithium batteries are available. 100V maximum input voltage 40A maximum current output Additional features include: LCD screen and several LED indicators; die-cast aluminium design Bluetooth-enabled and with the ability to use a smartphone app Renogy’s MPPT solar charge controller comes in second place to the EPEVER charger. It, too, has a tracking efficiency of 99 percent and a charge conversion efficiency of 98 percent. Additionally, it is compatible with a variety of battery types, including sealed, gel, and flooded lead-acid batteries, as well as lithium-ion batteries. It can even charge overcharged lithium-ion batteries, which comes in handy if your system experiences a spike. However, the controller is equipped with a number of safeguards to prevent this.
It detects overcharging, overdischarging, overloading, and short-circuiting and reacts immediately. It also includes a built-in semiconductor that prevents voltage from flowing backwards from your batteries to your solar panels. It’s suitable with up to four 12-volt panels in series because the input voltage and current are the same as the EPEVER controller. Users praised the controller’s Bluetooth compatibility, which allows you to check on the status of your system using the Renogy app on your smartphone. The built-in LCD screen, on the other hand, was not well received by users.
It doesn’t have a backlight, so seeing the information at night might be difficult, and the LED indicator lights don’t provide a lot of information about what’s going on with your solar system. What made it to our list? 99.99 percent tracking accuracy Most safety hazards are automatically addressed. Charges lithium-ion batteries that have been overcharged. Compatible with Bluetooth Backflow to panels is no longer an issue. What about it isn’t ideal? There is no backlight on an LCD panel.
Features of the SmartSolar MPPT 100/30 Charge Controller MPPT is a type of MPPT. 12V/24V battery voltage Types of batteries include Gel, AGM, PzS, OPzS, and Lithium. 100V maximum input voltage 30A maximum current output Additional features include: VictronConnect Bluetooth built-in; automated battery voltage identification SmartSolar’s charge controller is little more expensive than other solutions, but you’re paying for the build quality.
The controller simply feels strong in your hands and Best Solar Charge Controllers , and it can withstand abuse from portable use, such as with an RV, far better than other charging controllers, according to users. Almost no one has complained about this controller breaking down or failing to work throughout the years. It’s also adaptable, supporting 12- and 24-volt gel and conventional lead acid batteries, as well as lithium-ion batteries. The overall efficiency of the solar charge controller was praised by users, especially for mid-sized solar systems – it has a maximum input voltage of 100 volts, which is enough for four small solar panels coupled together. There is no temperature sensor included, but you can buy one separately and use Bluetooth to link it to the controller. Bluetooth connectivity, of course, allows you to regulate the voltage and current outputs from afar and monitor the health of your solar system. However, this charger lacks an LCD panel, which some consumers wished for.
An inline monitor can be installed, but it is not inexpensive. Another point to note is that the input ports are extremely close together, posing the risk of a short circuit if you’re not careful. What is it that we adore about it? Bluetooth compatible with lead-acid and lithium-ion batteries (including with temperature sensor) Excellent, long-lasting build Input of 100 volts What were the areas where we were dissatisfied? There is no LCD monitor for monitoring. There are a lot of input ports close together. Expensive
Consider the following:
How do you choose which solar charge controller is right for your Best Solar Charge Controllers now that you’ve learned more about our top ten solar charge controllers on the market? We’ll explain why you need a solar charge controller and how they function in our buying guide. We’ll also go through the crucial qualities to look for when selecting a model.
What is the purpose of a solar charge controller?
A solar charge controller isn’t always required for a solar system, but it is in the vast majority of cases. This little device acts as a voltage and current regulator, preventing your battery from becoming overcharged. Its primary function is to regulate the energy flow from the panels to the batteries. Because most typical 12-volt panels produce 16–20 volts of power, which is more than most standard batteries can handle, this is required (14 to 14.5 volts). You generally don’t need a solar controller if you’re utilising trickle charge panels in the one- to five-watt range. A decent rule of thumb is that you don’t need a solar charge controller if your panels produce less than two watts for every 50 amp-hours your batteries can store.