10 Best Solar Voltage Regulators & Their Reviews [Updated 2022]

Tim Hamlin
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I had a need to find a solar voltage regulator and the research and review I found was pretty thin. I was looking for something of a specific spec to solve a problem and finding such a thing was akin to searching for a needle in a haystack.

While that’s a pretty pessimistic view of the situation, I did eventually find a suitable product. However, it was only through extensive research and collecting a lot of product specific data.

What I would like to do is to make it easier for people to find a suitable product in the future. So, I’ve put together this guide with my findings (and were buying guide) and recommendations to help you save time and money.

If, like me, you have no idea what a solar voltage regulator does or how it works, this might be a good place to start.

So, what is a solar voltage regulator and how does it work? What kind of specifications should you be looking for? Why do people use a solar voltage regulator and what for?

I’ll try to answer these questions in the buyer’s guide below.

NameCategoryProduct
GHB 20A 12V 24V Solar Charge Controller Auto Switch LCD Intelligent Panel Battery Regulator Charge Controller Overload Protection Temperature CompensationBest OverallGHB 20A 12V 24V Solar Charge Controller Auto Switch LCD Intelligent Panel Battery Regulator Charge Controller Overload Protection Temperature Compensation
EEEKit 30A Solar Charge ControllerBudget PickEEEKit 30A Solar Charge Controller
Temank MPPT 40amp Solar Charge Controller 12V 24V AUTOUpgrade PickTemank MPPT 40amp Solar Charge Controller 12V 24V AUTO

1. GHB 20A 12V 24V Solar Charge Controller Auto Switch LCD Intelligent Panel Battery Regulator Charge Controller Overload Protection Temperature Compensation

Our rating: 9 / 10

GHB 20A 12V 24V Solar Charge Controller Auto Switch LCD Intelligent Panel Battery Regulator Charge Controller Overload Protection Temperature Compensation

Check Price on Amazon

Pros:

  • It is very functional
  • It is well worth the price for its great capabilities
  • It is very easy to use
  • It is very professional and reliable
  • It is a good buy for its price

This is the best solar voltage regulator available in the market. It is the perfect buy for anyone setting up a solar system. It allows adjustment of voltage and ampere, so it can be used in various fields. It has a controller input voltage and temperature compensation, and has 2.0A solar charger built-in. It has 12-24V constant voltage output. It also has overload protection, power input protection, and output short circuit protection. This product has a current and voltage display indicator, a overload protection alarm, and a temperature compensation function. The two knobs on the regulator are for output voltage and current. It is set up from 20A to 30A for 12V and 24V. It is worth the price, as it is very functional and the performance has proved itself.

This product has been reviewed by 725 customers on Amazon, and has been given a impressive customer score of 4.4 out of 5.0. Click here to see the reviews.

2. EEEKit 30A Solar Charge Controller

Our rating: 8 / 10

EEEKit 30A Solar Charge Controller

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Pros:

  • This kit comes with all the equipment you need to set up a stable solar system
  • A comprehensive instruction manual makes it easy even for inexperienced users
  • The display shows the real-time power consumption, voltage and frequency

Cons:

  • There are not many advanced features for experienced users
  • The panels are not water-resistant

This product comes with everything you need to start a solar system. The two interconnected solar panels can deliver a maximum of 32 watts of energy. The power input socket is protected from overheating. This is to prevent damage caused by overloading and short-circuiting. The panel has a waterproof rating of IP65 which means that it’s resistant to the effects of moisture. The LCD screen measures watts, latitude, and time. It also has a backlit display for easy reading.

The controller, meanwhile, comes with a voltage monitor, an overcharging protection system, and an undercurrent protection system. You can set the controller to charge at 16 amps in the daytime and at 4 amps from sunset to sunrise. The LEDs on the controller light up when these are active. There are two USB ports on this controller.

3. ZEALLIFE Solar Panels Charge Controller

Our rating: 7 / 10

ZEALLIFE Solar Panels Charge Controller

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Pros:

  • A wide range of safety features
  • Budget-friendly
  • It offers over-voltage, over-current, overload, short circuiting, surge protection, reverse polarity protection, and over temperature protection
  • Well-received customer service

Cons:

  • Over-voltage will not trip the circuit, only the controller
  • The battery life of the cells may be shortened due to overcharging

Each solar voltage regulator has its own unique features. If you’re after the best solar charge controller for solar panels out there, the ZEALLIFE Solar Panel Charge Controller is a great choice. With multiple safety features, the ZEALLIFE controller will help protect your battery cells as well as wire connections. You can charge 12V deep-cycle batteries with this device, and it also features an LCD display.

Like many other models, this ZEALLIFE controller allows for short-circuiting, over current, over voltage, over-temperature, over-load, reverse polarity, surge protection, and more.

While it’s not the cheapest controller on the market, it offers a level of protection that few others can offer, and it’s a top seller overall.

4. EPEVER PWM 60A Solar Charge Controller 12V/24V Battery Charge Regulator Input

Our rating: 7 / 10

EPEVER PWM 60A Solar Charge Controller 12V/24V Battery Charge Regulator Input

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Pros:

  • Short circuit, Over Current, and Over Voltage protections
  • Overload Protection
  • Intelligently designed with outdoor solar plug design
  • The integrated terminal block makes it easy to wire the PV panels and batteries directly
  • It has three stage charging mode
  • Safe, efficient, and reliable charging
  • It can automatically switch the three stages of charging while it monitors the battery voltage to ensure a full charge
  • It has variety of smart modes to ensure efficiency, safety, and reliability
  • Comes with a LCD display which shows real-time monitoring of the parameters
  • The LCD display displays the following data:

Cons:

  • The hold mode and load mode cannot be switched off
  • It can take approximately 28 hours for the battery to be fully charged

5. MOHOO Solar Charge Controller

Our rating: 7 / 10

MOHOO Solar Charge Controller

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Pros:

  • Huge Capacity
  • Dual USB Port
  • IP67 Water & Dustproof Rating

This solar regulator from MOHOO is the kind that can charge up quickly. It is the ideal solution for off-grid living, wilderness tours and homesteading. This solar regulator can charge 12V devices with a max input current of 30A. It has five charging modes for different gadgets to measure input current, output voltage and current voltage, LCD, alarm, and the battery capacity. In addition, it can charge different sizes of cells up to 100W so you can charge up lithium batteries, Lead batteries and other similar cells of different sizes. Therefore, if you are looking for a 30 amp solar regulator, this is the one for you. Quality, durability, and efficiency are three of its most important characteristics.

In addition, the dual USB feature allows you to charge two devices at the same time. This may come in handy if you are off-grid during a camping trip or camping with the kids. The dual USB port feature eliminates that problem. Furthermore, the IP67 rating is another key feature that makes this a good product. It protects the solar regulator from dust and moisture so you can use it during the rainy season. Also, the display system LCD allows you to know how much power is in your mobile device at any given time.

6. Temank MPPT 40amp Solar Charge Controller 12V 24V AUTO

Our rating: 7 / 10

Temank MPPT 40amp Solar Charge Controller 12V 24V AUTO

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Pros:

  • fast charging options
  • well-made overall

12V 24V,(40A) MPPT Solar Controller for Charge 12/24Volt Battery Boat Yacht Caravan RV Wind Turbine Generators on Amazon.

If you’re looking for a solid auto-shut down solar regulator that can handle a decent amount of wattage, the Temank controller is definitely worth considering. It’s a great option for off-grid homes that rely on photovoltaic solar panels for most of their energy needs. It can cut off imbalanced voltages, protect your solar panels from overcharge, and it shuts off the power when the batteries are fully charged.

The LCD display makes programmable changes a lot easier to see and do. And it works automatically, meaning you don’t have to manually manage any of the settings. There’s also a temperature sensor that can keep your batteries from overheating, which is a great feature. The materials and design are both well-made. The Temank runs on a system of MPPT, which is quite a bit different from the PWM or PFM seen on cheaper models.

7. POTEK 10-Amp/130-Watt 12-Volt Solar Charge Controller Battery Regulator

Our rating: 6 / 10

POTEK 10-Amp/130-Watt 12-Volt Solar Charge Controller Battery Regulator

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Pros:

  • Quick and easy installation process
  • Two RV battery hookups
  • Water-resistant

Cons:

  • If not used with batteries, it will generate a spark
  • Only powers at night

If you are wondering where to buy a solar regulator, here are some factors you should consider:

  • Frequency Correction — Some solar regulators have the ability to correct the frequency of your power system. This means that the regulator will match the frequency of your solar panel and batteries so that they are all working together. This is one of the most important things to consider when you are buying solar batteries. If you do not take this factor into consideration you could end up with a battery that does not work well with your solar panel.
  • Features — It is important to consider the features of the solar controller. If you are looking for something basic you will not need as many features. If you are looking for something more advanced then you should look for something more advanced.

8. AOSHIKE 30A MCU Solar Charge Controller

Our rating: 4 / 10

AOSHIKE 30A MCU Solar Charge Controller

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Pros:

  • This charge controller comes with a 5 year warranty
  • Its LCD display is intuitive and simple to use

Cons:

  • The included connectors don’t work with every 12 V battery
  • It only comes in a 200 W model so you’ll need two if you’re installing more solar panels

Imbed for 12/24V.

This is one of the best solar voltage regulators on the market. The Aoshiike IMM200A MCU smart charge controller offers maximum charging current to all connected 12 V batteries independently based on the voltage and temperature of the solar panels and batteries. This means you can charge a variety of different batteries, as long as they’re all 12 V or panels. This controller automatically shuts down when the solar panels are not producing enough current, and turns on when it’s dark. It also includes a LCD display to monitor the voltage, current, and temperature of your 12 V battery.

The Aoshiike 30A MCU solar charge controller is ideal for rv owners, motorhomes, boats, and off- grid electricity systems.

Frequently Asked Questions (FAQ)

What is the best solar regulator?

A quality solar voltage regulator will always come in handy because it will reduce battery overcharging while also preventing the use of power from the solar panels during the day when unnecessary.

Having a quality regulator installed in your battery pack will extend the life of the unit while also saving you time.

In addition, it will also protect both your battery and your solar panels from being damaged due to fluctuations in the power supply. The fuse should be built-in to ensure that it is safe during lightning and other DIY projects. The best quality fuse is the PTC fuse that is rated at 30A.

What is the best voltage for a solar system?

The voltage rating of a solar system is critical for the health of your system. In general, solar panels can produce voltages in the range of 15-18 volts per cell under maximum rated conditions.

If the voltage from your solar panels is not fed through a verter, then the excess voltage will be "clipped off" or "dropped." A voltage regulator will drop only a certain amount of volts, called the "dropout" voltage. In general, regulators will dropout between 15 and 20 volts.

The voltage limit is important if you are adding batteries to discharge energy from your panels at night. If you make the voltage from the panels too low, then the batteries need to be charged again to a higher voltage that they can discharge back into the panels.

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How many volts does a 10 watt solar panel produce?

A 10-watt solar panel will produce 2.05 volts. This means that by increasing the number of panels in a solar array, you can increase the voltage of the array.

Now, keep in mind that voltage isn't the only component needed to determine energy output. So it's not useful to just add more panels together to increase your energy output. You also need to consider your other electrical components. If the voltage is too great, then the voltage regulator will work overtime to keep the output low. This will negatively affect the efficiency of your system. You should know, however, that the 'voltage drop' over the fixed cables will serve to keep your voltage stable at the battery-level.

What are the most efficient solar panels available in Australia?

The wattage rating of solar panels is primarily determined by the area of its surface. In Australia, the highest wattage solar panels available are the BlackPoly 5400w and the ionite 60w. Both match a 4.8kW inverter.

The most important factor in determining the efficiency of a solar panel depends on the type of solar panel as well as the conditions where it is installed. But in general the most efficient panels will be Crystalline panels. The less efficient the panel is, the less expensive it will be.

Crystalline panels’ efficiency rates vary from between 15% to 22%, whereas the average efficiency rate of thin film technology is around 11%. This results in an average power production of about 1350kWh/kWp per year.

Conclusion

If you are a solar power user, then by now you know that the better the regulator is, the better your solar panel battery charge turns out. So how do you choose the best solar regulator? We explain all about it in the buying guide above. But if you just want our top recommendations, check out the best solar voltage regulators we chose.

Our Recommendation

NameCategoryProduct
GHB 20A 12V 24V Solar Charge Controller Auto Switch LCD Intelligent Panel Battery Regulator Charge Controller Overload Protection Temperature CompensationBest OverallGHB 20A 12V 24V Solar Charge Controller Auto Switch LCD Intelligent Panel Battery Regulator Charge Controller Overload Protection Temperature Compensation
EEEKit 30A Solar Charge ControllerBudget PickEEEKit 30A Solar Charge Controller
Temank MPPT 40amp Solar Charge Controller 12V 24V AUTOUpgrade PickTemank MPPT 40amp Solar Charge Controller 12V 24V AUTO