best solar voltage regulator

9 Best Solar Voltage Regulators & Their Reviews [Updated 2021]

It’s no secret that solar voltage regulators are almost a requirement when using solar panels and energy systems. But what do we use solar panels for and why do we need to regulate their voltage?

Although solar power similar to what we use today has been around for sixty years, it wasn’t until the early aughts that home and recreational use of solar panels became popular. Probably my favorite thing about solar power is that it can be used for a huge array of reasons.

It is because of this variety of usages that residential solar home heating and solar water heating have continued to grow in popularity as more people continue to become aware of the benefits of solar energy for everyday usage. More recently, many homeowners have begun to install solar roof tiles, which have the ability to create significant amounts of energy that can be used to power the things around your home or in the outside world around you.

1. Potek 10-Amp/130-Watt 12-Volt Solar Charge Controller Battery Regulator for Solar Panel

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

This product is perfect for those with a small solar energy system needing short-circuit and reverse-connection protection.

One of the things I love about the Potek 10-Amp is that it is small (with a weight of only four ounces) and a simple regulator, yet it efficiently regulates solar energy very well.

Another important feature of this regulator is that will work even if it’s not connected to a battery, which can be more difficult to find in some regulators.

Pros & Benefits:

  • Easy to set up and operate, and should problems arise, offer fantastic customer support.
  • Provides overcharge, over-discharge, overload protection, as well as short-circuit and reverse-connection protection.
  • Comes with an 18 month warranty.
  • Perfect for small solar energy systems, such as cameras and phones.
  • Outputs power independent of the battery voltage, which creates ease of use.

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2. EEEKit Solar Charge Controller, Dual USB Port Solar Panel Battery Intelligent Regulator, Multi-Function Adjustable LCD Display Street Light Controller, 12V24V 30 amps

EEEKit 30A Solar Charge Controller, Solar Panel Charger Controller 12V/24V, Multi-Function...

The EEKit Solar Charge Controller is great option for those needing support for smaller devices, such Apple and Android mobile phone charging, solar panels, car batteries, and more.

I recommend this product because it has a maximum current of 2.5A, making it the perfect product for those with specific needs.

Plus, the EEEKit Solar Charge Controller is very user friendly, allowing for a quick setup time and great usability.

Pros & Benefits:

  • Sizable LCD display with an adjustable parameter for easy readability and usage.
  • Versatile and ideal for home, commercial, and industrial uses.
  • Features short-circuit protection, open-circuit protection, reverse protection, and over-load protection to improve battery health.
  • Features an industrial micro controller, which is built in, that can automatically handle the workings of both the solar panel and the battery in the solar system.
  • Includes a full 3-stage Pulse Width Modulation (PWM) charge management to improve system efficiency and ultimately prolong the life span of the battery.

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3. EPEVER 30 Amps Flush Mount Solar Charge Controller 12V 24V, Max Input 360W/720W Negative Ground 30 amp Solar Regulator Compatible with Sealed, Gel, and Flooded Batteries

EPEVER 30A Flush Mount Solar Charge Controller 12V 24V, Max Input 360W/720W Negative Ground 30 amp...

The EPEVER 30 amps Flush Mount Solar Charge Controller is perfect for those with any off-grid solar system such as recreation vehicles (RVs), mobile service vehicles, solar boats, etc.

I love this product because it offers several benefits not seen in all solar voltage regulators, including real time energy statistics, multiple communication peripherals and a battery temperature compensation feature.

The option to control and change the system parameters through an app or PC software is so handy for those of us who are attached to our devices.

Additionally, I love the sleekness and usability of the LCD screen. This is an attractive system!

Pros & Benefits:

  • Negative-ground charge controller and please note that if grounding is required, it must be completed on the negative line.
  • Protection against PV over current, PV over voltage, PV short circuit, PV reverse polarity, night reverse charging, battery reverse polarity, battery overheating, controller overheating, and TVS high voltage.
  • Features thePulse Width Modulated (PWM) charging mode.
  • Many consider PWM to be the best way to achieve a constant voltage battery by switching the solar system controller’s devices on and off.
  • The system’s rated charging current remains at working temperature without de-rating and compensates for temperature.
  • System parameters can be set through PC software or a mobile app, allowing users to make system changes while on the go.

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4. ZEALLIFE Solar Panels Charge Controller, 8 Amps Battery Regulator for 12V Solar Battery Charger, Solar Battery Maintainer and 12 Volt Batteries Power Kit Safe Protection

ZEALLIFE Solar Panels Charge Controller, 8A Battery Regulator for 12V Solar Battery Charger, Solar...

This product, the Zeallife Solar Panels Charge Controller is great for those regulating the voltage from a 12-volt solar panel to a safe level for charging 12-volt batteries.

I love this solar voltage regulator because it features Pulse Width Modulated (PWM) and separates the three ports to help you to connect the cables easily and check your line clearly.

Another great feature of this controller is its output switch, which allows you to manually control the output, making the usage of this regulator easy and comfortable to operate.

One of my favorite aspects of this solar voltage regulator is its small size and simple design.

This product may not have all of the bells and whistles found on some regulators, but it’s a great value.

Pros & Benefits:

  • Features a simple, clear and easy to read LED display.
  • Provides overcharge, over-discharge, overload protection, as well as short-circuit and reverse-connection protection.
  • Available in two attractive styles to choose from classic and LCD style.
  • Features omnidirectional protection function.
  • This function allows protection to come from all sides, thus extending the service life of the battery.
  • Appropriate for 12V solar panels (20w-130w) with maximum current output of 8A and for 12v rechargeable lead acid battery with battery capacity from 12Ah to 100A, including OPEN, AGM and GEL batteries.
  • Not appropriate for lithium batteries and Ni MH batteries.

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

GHB 20A 12V 24V Solar Charge Controller Auto Switch LCD Solar Panel Battery Regulator Charge...

This product, the GHB 20 Amps 12V 24V Solar Charge Controller, is perfect for those looking for a sleek and intuitive regulator for a wide variety of solar powered needs, both big and small.

One of the things that I love about this product is that it’s fully automatic.

In addition to being fully automatic, this solar panel regulator uses intelligent control, has an output switch, and is simple to operate.

Another great feature is the battery indicator light on the controller, which will turn on when it is successfully connected, making it simple to ensure that the solar voltage regulator is properly connected.

Finally, I love the look of this product.

When mounted, the GHB Solar Charge Controller looks very professional and clean.

Pros & Benefits:

  • Fully automatic with an interface that is very easy for consumers to use.
  • Features dual USB output (1 amp, 2 amps) to allow users to concurrently charge or supply power to two mobile phones, tablet s, laptops etc. at the same time.
  • Power efficient, allowing users to use 100% of all available solar power.
  • Features overload and short circuit protection, under-voltage protection, lightning protection, reverse polarity protection, and over-charging protection.
  • Features digital accuracy- for example, when it’s charging, the arrow between the panel icon and the battery icon will quickly flash, however when the battery is at a full charge, the arrows will slowly flash and the product will stop charging, as the function of the controller is to protect the voltage from overshooting and discharging.

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6. MOHOO Solar Charge Controller, 30 Amps Solar Charger Controller, 12V/24V Solar Panel Intelligent Regulator with Dual USB Port and PWM LCD Display (Upgraded)

MOHOO Solar Charge Controller, 30A Solar Charger Controller, 12V/24V Solar Panel Intelligent...

This product, the MOHOO Solar Charge Controller, is great for those looking to wanting a clear and easily programmable LCD display.

My favorite feature of this solar charge controller is that although the controller is simple and inexpensive, it can effectively and mechanically manage the functioning of solar panels and batteries in the solar system.

Furthermore, the MOOHOO Solar Charge Controller is easy to set up and operate.

When using this product for protecting the lifespan of your battery, you will see that once the voltage of the battery drop below 8V, the solar charge controller will turn off automatically.

I should note that the LCD screen will be unavailable when this happens.

Overall, I think this product has many great features and can be used on a variety of batteries.

Pros & Benefits:

  • System voltage 12V/24V automatic identification and Intelligent Pulse Width Modulation (PWM) charging mode.
  • Dual bottom design and easy to setup.
  • Features battery reverse discharge protection, battery overvoltage protection, and battery under voltage protection.
  • Includes technology to ensure that when the battery voltage reaches 14.4 volts or 14.5 volts, the MOHOO Solar Charge Controller will stop charging and shift into a protective role.
  • If the floating stage is not reached, the solar charge controller has a voltage limit value and will not charge if the battery voltage reaches to 14.4 volts or 14.5 volts.
  • Features dual USB ports for 12 volts/24V volts, with a rated charge and discharge current of 30 amps.
  • The battery must have sufficient voltage so that the solar charge controller can recognize the battery type.
  • Features effective heat dissipation achieved through dual reverse current protection and low heat production.

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7. AOSHIKE 60 amps MCU Solar Charge Controller with LCD Display,New MPPT Technical Maximum Charging Current Multiple Load Control Modes (60 amps)

AOSHIKE 30A MCU Solar Charge Controller with LCD Display,New MPPT Technical Maximum Charging Current...

This product, AOSHIKE 60 Amps MCU Solar Charge Controller, is for consumers that are looking for Maximum Power Point Tracking (MPPT) technology with a lower price tag.

This product’s solar controller MPPT technology is used to detect the maximum charging current, as opposed to the boost type or the automatic charging of the solar panel voltage.

What I love most about this solar voltage regulator is its value.

This product has a lot of great features and technology often seen with pricier products, such as three-phase charge control, but with a smaller price tag.

Three-phase charge management successfully guards the battery and makes the battery is more durable, helping to achieve the ultimate goal of a product like this.

Pros & Benefits:

  • Uses innovative MPPT technology with high tracking efficiency of up to 99%.
  • Built-in overheating, short circuit, over current, reverse connection protection, and open circuit protection.
  • Features an easy to read LCD panel display design, with industrial-grade master chip, multiple load control modes, temperature, 16 AD sampling accuracy, charging current, discharge current accurate real time display, and the power generated.
  • Includes high-power charging mode, bidirectional MOS tube anti-backflow circuit, high-power charging mode, and ultra-low heat.
  • Features over voltage protection, overcharge protection, short circuit protection, and over discharge protection, and overload protection function protection through the usage of automatic focusing MPPT tracking charging, high charging efficiency, non-stop detection during charging, and bidirectional focusing tracking.

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8. EPEVER PWM 60 amps Solar Charge Controller 12V/24V Battery Charge Regulator Input with LCD Display Dual USB Output

EPEVER PWM 60A Solar Charge Controller 12V/24V Battery Charge Regulator Input with LCD Display Dual...

This product, the EPEVER PWM 60 amps Solar Charge Controller, is perfect for those seeking the most innovative digital system with multiple load control modes.

The controller is a Pulse Width Modulation (PWM) charge controller with a built in LCD display that utilizes the most cutting-edge digital techniques.

The multiple load control modes enable it can be widely used on a wide variety of systems, from the solar home systems and outdoor solar systems to traffic signals and solar street lights.

I also love that the EPEVER PWM 60 amps Solar Charge Controller comes in four different options (10 amps, 20 amps, 30 amps, and 45 amps).

This makes it easy for customers to select the perfect option for them.

Pros & Benefits:

  • Terminals feature UL and VDE certification with temperature compensation.
  • This creates a safer and longer battery lifespan.
  • Support 3 charging options: sealed, gel, and flooded
  • Twelve month warranty, extensive electronic protection and battery temperature compensation function.
  • Clear LCD display with user-friendly features including humanized button settings, and feature PV (Voltage, Current, Kwh), BAT (Volt, Current, Temperature), and Load (Current, Kwh, Work Mode) information.
  • The controller is a positive ground solar charge controller with a 3-stage intelligent PWM charging system to include bulk, boost/equalize, and float.
  • Features PV short circuit protection, PV reverse polarity protection, battery over voltage protection, battery over discharge protection, battery reverse polarity protection, battery overheating protection, battery reverse polarity protection, load overload protection, and load short circuit protection.

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9. Solar Charge Controller 12V/24V 30A PWM Solar Panel Intelligent Regulator with Dual USB Port LCD...

Solar Charge Controller 12V/24V 30A PWM Solar Panel Intelligent Regulator with Dual USB Port LCD...

This product, the Bokeley Solar Charge Controller, is great for those looking for an affordable, yet efficient regulator for off-grid PV solar system.

Furthermore, it would be a perfect match for those wanting to use the controller on smaller appliances and batteries.

Not only does the Bokeley Solar Charge Controller come with a very low price tag, it also has amazing reviews.

I love this product for its simplicity and ease of use.

This product does exactly what it sets out to do.

Pros & Benefits:

  • 4-stage Pulse Width Modulation (PWM) charge management with dual mosfet reverse current protections and low heat productions
  • One-key setting, digital display, and auto memory function.
  • Simple to use and set up.
  • This controller comes with a display that can clearly indicate the status and statistics.
  • Modes can easily be switched and parameter configuration can be easily changed.
  • Comes with a display that can clearly indicate the position and data, it can be usefully switched modes and parameter configuration, appropriate for home, industrial, commercial, etc.
  • Fit for lead-acid batteries, such as AGM, OPEN, GEL, but does not work for lithium, nickel hydride, Li-ions batteries.
  • Solar voltage regulators are crucial when using a solar power system.
  • They prevent overcharging and can protect against over voltage, which in turn can reduce battery performance or lifespan and could even pose a safety risk.
  • Furthermore, solar voltage regulators may also prevent completely draining a battery and/or perform controlled discharges to protect battery life.

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Final Thoughts

There are many options available for solar voltage regulators.

The key to finding your perfect regulator depends on what features are most important to you and what your needs are.

Fortunately, you can rest assured that these recommended solar voltage regulators will keep your batteries in great health!

In conclusion, a solar panel regulator is just a switch that regulates the current and voltage coming going into the battery from the solar panel.

But how do you know which solar panel regulator is right for you?

There are countless options available, but your choice will come down to what you need the solar voltage regulator for and what features are most important to you.

It is important to note that the most common voltage that pv charge controllers come in is twelve, twenty-four, and forty-eight volts.

Furthermore, amperage ratings can be between anywhere from 1-60 amps and voltage ratings anywhere from 6-60 volts.

Along those lines, when you’re selecting a solar voltage regulator, you must first ensure that the regulator is compatible with the voltage of your system and select a product that can handle the maximum output current of your solar panel or array.