10 Best Solar Charge Controllers in 2020 – Reviews and Buyer’s Guide

Best Choice

Parmak MAG12-SP Solar Electric Fence Charger

  • Features a powerful solar panel
  • Ideal for large pastures
  • Portable and weatherproof model
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Best Value

Silver Streak Solar Fence Charger

  • Designed to power up about 400,000 sq. meters of the fence area
  • Features a polycrystalline solar panel
  • A low-impedance technology
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Premium

Gallagher S100 Solar Fence Energizer

  • Features a built-in solar panel
  • Can work for 21 days without sunlight
  • Comes water and all-weather resistant
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If you have installed a solar energy system then you need a solar charge controller to increase the efficiency of your system. Your solar system could be of any kind, such as household or street light. There are various types of solar controllers that suit best for your system.

Are you planning to install a solar controller for your RV or do you want to manage the voltage flow in your multi-panel off-grid system? You need to select a perfect solar charge controller for your system and it will prevent your system from several threats.

While choosing an ideal solar controller for your solar system, you need to consider several factors. For example, there are two most common types of solar charge controllers in the market. The MPPT type and the PWM type.

Which controller type should you select for your solar system? It depends on the specifications of the solar system and the efficiency of the solar controller.

In this article, we have reviewed 10 best solar charge controllers in 2019 with diverse specifications. If you are searching for an efficient solar controller that supports your solar energy system then read further as we unveil the top 10 products.

Our Top Pick

Renogy Rover 20 Amp DC Input MPPT Charge Controller

Renogy Rover 20 Amp DC Input MPPT Charge Controller is our best solar charge controller among all that we have reviewed here. The controller is compatible with various battery types, such as sealed, gel, flooded, and lithium-ion. It also contains an RS232 port to connect the Bluetooth module and let you change its parameters using your portable electronic device.

In addition, it features a user-friendly and elegant design that lets you check the system status with ease. There is no other controller in our list that provides all these features and other distinct features, at a reasonable price.

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Quick Summary of 10 Best Solar Charge Controllers

Product Image Product Name
The MPPT Solar Controller Contains Die-Cast Aluminum Design
Renogy Rover 20 Amp DC Input MPPT Charge Controller

The Renogy manufactured MPPT solar charge controller features an RS232 port for connecting Bluetooth module.

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A PWM Solar Controller That Includes STM 8 Microprocessor
Solar Panel Battery Regulator with USB Port Display

The 20A solar controller protects the system from overheating and follows a 3-stage charge management system.

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A Positive Grounding Controller That Provides Temperature Compensation Feature
HQST 30 Amp PWM Common Solar Charge Controller

The 30A solar charge controller controls the light settings based on the presence and absence of daylight.

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The PWM Controller From WindyNation Works Best For Small Solar Systems
WindyNation PWM Solar Panel Regulator Charge Controller

This PWM solar controller supports various types of batteries and works best for small solar systems.

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The Flexmax MPPT Solar Controller Stores System’s Data for 128 Days
Outback Flexmax MPPT 80 AMP Solar Charge Controller

This solar charge controller features a thermal intelligent cooling that lets it perform better even at high temperature.

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A User-Friendly Solar Controller From ZEALLIFE With 3-Stage Charging
ZEALLIFE Solar Panels Charge Controller With LED Display

This PWM type controller protects the system from various threats and follows a 3-stage charging method.

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A Heat Dissipating Controller That Can Supports 4 X 12V Solar Panels
EPEVER 40A MPPT Solar Charge Controller 100V Input

This MPPT controller has a rated current of 40A and has a maximum photovoltaic input value of up to 100V.

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This 60A Solar Charge Regulator Features an LCD Screen For Data Display
60A Solar Panel Charge Regulator with LCD Display

The MPPT controller from OYCYOO features multi-stage charging and can be used for diverse systems.

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The RichSolar Solar Charge Controller Includes an RS232 Port
20Amp 12V/24V DC Input MPPT Solar Charge Controller

This solar controller follows 4-stage charging and includes an RS232 port to connect Bluetooth modules.

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The PWM Controller From MOHOO Features a Moisture-Tight Coating
MOHOO 20A Intelligent Solar Charge Regulator

This PWM solar charge controller has a moisture-tight coating and protects the system from overheating, overvoltage, etc.

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Best Solar Charge Controllers of 2020 - Reviewed

Renogy Rover 20 Amp DC Input MPPT Charge Controller

Die-Cast Aluminium Designed Controller With Bluetooth Connection

Features Highlights

  • Designed with die-cast aluminum and can measure the battery’s temperature
  • Works great with a variety of battery types and protects the solar system from various threats
  • Automatically detects 12V/24V system’s DC voltage; features 4-stage charging
  • Features RS232 communication port to connect mobile devices with Bluetooth
  • Its LCD display screen and several LED indicators let you check the system’s information
The MPPT solar charge controller from Renogy has a rated current of 20 amperes, can charge an over-discharged lithium-ion battery and features Bluetooth connection to promote communication between the controller and mobile devices. Check Price on Amazon

Product Specification

  • Dimensions:

    8.27 X 5.94 X 2.34 Inches

  • Weight:

    3.08 Pounds

  • Manufacturer:

    Renogy

  • Rated Current:

    20 Amperes

  • Controller Type:

    MPPT

Pros

  • Can charge an over-discharged battery
  • Features RS232 communication port

Cons

  • Difficult to mount on a surface
  • Terminals are unsafe

Our Verdict

This solar charge controller uses MPPT technology, thus can be used for heavy solar energy systems. Be careful with its terminals, as they are not safe to use without precaution. You can easily control its parameters with your smartphone once you connect its RS232 with a Bluetooth module. Thus, we recommend you to purchase it because of its convenient customizing options.

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Solar Panel Battery Regulator with USB Port Display

A Reliable Solar Charge Controller With 20 Ampere Discharge Current

Features Highlights

  • A PWM solar charge controller with a discharge current of 20 amperes
  • Supports 3-stage charge management, that is bulk, ABS, and float
  • Supports batteries of 12V and 24V; includes USB ports of output 12V/3A
  • Includes a tough STM 8 microprocessor with rich circuit components
  • Provides an adequate heat dissipation and protects from overloading and short-circuit
The AllPowers PWM solar charge controller with 20-ampere discharge current and 3-stage charge system works well with a battery voltage of 12 V and 24 V and comes with thick and sturdy steel back cover. Check Price on Amazon

Product Specification

  • Dimensions:

    6.1 X 3.2 X 1.6 Inches

  • Weight:

    7.2 Pounds

  • Manufacturer:

    ALLPOWERS

  • Rated Current:

    20 Amperes

  • Controller Type:

    PWN

Pros

  • Supports 3-stage charge management
  • Includes an LCD display

Cons

  • The USB port is not durable
  • Not for outdoor use

Our Verdict

The solar charge controller is easy to install and also features a display at its front to let you check its working status. However, the product is not waterproof and thus you should not install it outdoors. Also, if the battery voltage drops to less than 8 volts, it will shut down automatically.

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HQST 30 Amp PWM Common Solar Charge Controller

A Positive Grounding Solar Charge Controller With Light Control

Features Highlights

  • Features a rated current of 30 amperes and recognizes 12V/24V voltage system
  • The positive grounding charge controller lets you customize the user settings
  • Includes automatic light control based on the absence and presence of daylight
  • Equipped with an LCD display screen and two USB ports to charge electric devices
  • Protects the solar energy system from short-circuit, overcharging, and other threats
This multifunctional solar charge controller features light control, LCD display, protects the solar system from short-circuits and other threats, and automatically recognizes 12V/24V system voltage. Check Price on Amazon

Product Specification

  • Dimensions:

    8 X 4 X 3 Inches

  • Weight:

    1 Pound

  • Manufacturer:

    HQST

  • Rated Current:

    30 Amperes

  • Controller Type:

    PWN

Pros

  • The automatic light control feature
  • Controlling parameters can be reset flexibly

Cons

  • The output turns off automatically
  • Display value is not reliable

Our Verdict

This solar charge controller lets you flexibly adjust the controlling parameters. It also prevents your solar energy system from operating threats such as short circuit, overcharging and reverse charging. This is a more cost-effective option for you. But you should not rely on its display value, as it is not so reliable.

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WindyNation PWM Solar Panel Regulator Charge Controller

A PWM Solar Charge Controller With Advanced Electronic Protection

Features Highlights

  • Protects the solar system from overload, short-circuit, and several other threats
  • Support various types of batteries with a voltage reading of 12V and 24V
  • The built-in LCD display lets you check the important information of the system
  • Prevents battery overheating with its Battery Temperature Sensor (BTS) feature
  • Works best for small off-grid solar systems such as RV, boat and camping equipment
The WindyNation solar charge controller of 30 amperes rated current works great for batteries of voltage 12V and 24V, and can be configured with AGM, Lead Acid, Gel and other various kinds of batteries. Check Price on Amazon

Product Specification

  • Dimensions:

    7.4 X 1.9 X 3.5 Inches

  • Weight:

    1.05 Pounds

  • Manufacturer:

    Windy Nation

  • Rated Current:

    30 Amperes

  • Controller Type:

    PWN

Pros

  • Works with all types of solar batteries
  • Features Battery Temperature Sensor (BTS)

Cons

  • Cannot prevent high voltage after long use
  • Does not support large solar energy systems

Our Verdict

This solar charge controller works great with different battery types and prevents the battery from overheating. However, the controller cannot support large systems such as lighting the entire equipment of a house. Thus, we recommend you to purchase this controller only if you are willing to charge a small off-grid system.

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Outback Flexmax MPPT 80 AMP Solar Charge Controller

A Versatile Charge Controller That Increases PV Array Output By 30%

Features Highlights

  • Increases the photovoltaic array output of the solar system by upto 30%
  • Operates without interruption even at high temperature with its intelligent thermal cooling
  • Works with a wide range of solar systems with voltage ranging from 12V to 60V
  • Able to charge a lower voltage battery from a high voltage solar panel
  • Comes with 5 years warranty and includes a backlit LCD display screen
The FlexMax80 charge controller features a backlit LCD display with 80 characters that lets you read current and voltage status, combined with system performance data for the last 128 days of operation. Check Price on Amazon

Product Specification

  • Dimensions:

    16.2 X 5.8 X 4.5 Inches

  • Weight:

    12.2 Pounds

  • Manufacturer:

    Outback Power

  • Rated Current:

    80 Amperes

  • Controller Type:

    MPPT

Pros

  • 5 years warranty period
  • Works with batteries of a wide range of 12V to 60V

Cons

  • Comparatively heavyweight
  • The interface is not user-friendly

Our Verdict

This MPPT solar charge controller is great when you are connecting your low voltage battery with a solar panel of higher voltage output. But the user interface is not good because it features very small buttons that make it difficult to change its parameters. Also, it has a heavyweight, thus make sure you mount it strong to a wall or other surface.

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ZEALLIFE Solar Panels Charge Controller With LED Display

A User-Friendly Controller With Omnidirectional Protection Function

Features Highlights

  • Provides protection from overload, short circuit, low voltage and other system threats
  • Features an LCD screen with real-time display of important system information
  • Charges the solar battery efficiently with its 3-stage PWM charging method
  • Has a user-friendly design that lets you manually control the output with a switch
  • Equipped with an STM 8 microprocessor; works well with diverse battery types
The solar controller from ZEALLIFE has a user-friendly interface with a USB port to charge your devices, including an LCD screen for real-time display of system’s information and supports 3-stage charging. Check Price on Amazon

Product Specification

  • Dimensions:

    4.3 X 1.1 X 3.1 Inches

  • Weight:

    3.2 Ounces

  • Manufacturer:

    ZEALLIFE

  • Rated Current:

    8 Ampere

  • Controller Type:

    PWM

Pros

  • Includes STM 8 microprocessor
  • Easy to operate user interface

Cons

  • Does not support lithium-ion battery
  • Is not weatherproof

Our Verdict

The solar controller lets you control the power output with its easy-to-use buttons. You can use this controller for a variety of batteries, except lithium-ion batteries. Thus, we recommend this product only if you are not using a lithium-ion battery for your solar energy set-up.

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EPEVER 40A MPPT Solar Charge Controller 100V Input

A Negative Grounding Solar Controller With Die-Aluminium Design

Features Highlights

  • Features heat dissipation and natural cooling with its die-cast aluminum design
  • Compatible with lithium-ion and lead-acid batteries with voltage 12V and 24V
  • Includes multiple load control modes, with manual control of light and timer
  • Supports negative grounding and has a battery input voltage within the range of 8V to 32V
  • Has a maximum 100V PV input capacity that supports 4 X 12V solar panels
This MPPT solar controller supports standard Modbus communication, has a maximum photovoltaic input of 100V and can support 4 solar panels of 12V each; works great with lead-acid and lithium batteries. Check Price on Amazon

Product Specification

  • Dimensions:

    9.9 X 7.1 X 2.5 Inches

  • Weight:

    4.19 Inches

  • Manufacturer:

    EPEVER

  • Rated Current:

    40 Amperes

  • Controller Type:

    MPPT

Pros

  • Standard Modbus communication protocol
  • Can connect 4 solar panels of 12V

Cons

  • Wire terminals do not work properly
  • The display is difficult to read

Our Verdict

This solar charge controller lets you connect your laptop in order to change its settings. However, without any electronic devices, you cannot read the display information properly. Thus, if you plan to use this solar controller without plugging any devices then we recommend you ignore this product.

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60A Solar Panel Charge Regulator with LCD Display

An MPPT Solar Controller With Automatic Battery Voltage Detection

Features Highlights

  • The LCD displays real-time data and LED light ensures the battery and solar panel is connected
  • Built-in intelligent protection from reverse polarity, reverse charging, etc.
  • Hardly wastes any solar energy from solar panels with its high tracking efficiency
  • Compatible with a variety of solar off-grid applications and battery models
  • Ensures the battery lasts longer with its three levels of charging mode
The charge controller has built-in intelligent protection and supports multi-stage charging that includes constant current, constant voltage and floating charge; features an LCD screen with a display of real-time system data. Check Price on Amazon

Product Specification

  • Dimensions:

    8.2 X 8.2 X 3.3 Inches

  • Weight:

    2.95 Pounds

  • Manufacturer:

    OOYCYOO

  • Rated Current:

    60 Amperes

  • Controller Type:

    MPPT

Pros

  • Compatible with a variety of solar systems
  • Restore factory settings in 5 seconds

Cons

  • Does not work for battery below 9V
  • The LCD display is not accurate

Our Verdict

The solar charge controller protects your system from several risks. It also works best with diverse solar systems. However, you should not operate this machine without connecting the battery first. Thus, you need to be careful while handling this equipment.

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20Amp 12V/24V DC Input MPPT Solar Charge Controller

4-Stage Charge Technology Solar Controller With heat Dissipation

Features Highlights

  • Includes die-cast aluminum design at its bottom for heat dissipation
  • Stores the system’s data for 1 year and features an LCD screen to display the data
  • Supports four-stages of battery charging and has a high tracking efficiency
  • Protects the solar system from different risks and comes with a 1-year warranty
  • Features RS232 port that lets you connect Bluetooth device with the controller
The solar controller from RichSolar provides heat dissipation feature with its die-cast aluminum design, stores the system data for an extended period and comes with a 1-year warranty. Check Price on Amazon

Product Specification

  • Dimensions:

    8.27 X 5.94 X 2.34 Inches

  • Weight:

    3.08 Pounds

  • Manufacturer:

    RICH SOLAR

  • Rated Current:

    20 Amperes

  • Controller Type:

    MPPT

Pros

  • Data storage of up to 1 year
  • 4-Stage MPPT charging technology

Cons

  • Defective temperature sensor plug
  • Malfunctioning load terminals

Our Verdict

This solar charge controller stores the system data for 1 year and lets you change the parameters by connecting a Bluetooth device at its RS232 port. However, some of the features are defective, such as its load terminals and temperature sensor plugs. Thus, if you order this equipment, make sure you check these components and contact the manufacturer immediately in case you find any defect.

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MOHOO 20A Intelligent Solar Charge Regulator

20 Ampere PWM Solar Controller With Backlight LCD Display

Features Highlights

  • A backlight LCD screen displays battery power, temperature value, and other system details
  • Has a low failure rate and is covered by a moisture-tight coating
  • Works great with all lead-acid batteries and protects the system from various threats
  • Shuts automatically if the voltage drops below 8V to prevent damaging the controller
  • Resistant to water; includes two USB ports for connecting electrical devices
The PWM technology solar charge controller with a large backlight LCD display works best for all types of lead-acid batteries, prevents the solar energy system from several risks and is protected with a moisture-tight coating to prevent mold. Check Price on Amazon

Product Specification

  • Dimensions:

    3.9 X 3.9 X 3.9 Inches

  • Weight:

    6.7 Pounds

  • Manufacturer:

    MOHOO

  • Rated Current:

    20 Amperes

  • Controller Type:

    PWM

Pros

  • The LCD display features a backlight
  • Protected with moisture-tight coating

Cons

  • Heats up fast, ventilation is a must
  • Does not support batteries other than lead-acid

Our Verdict

This solar controller works great for a variety of systems, but only with a lower voltage input. Being a PWM type controller, it cannot support heavy systems such as an entire household. However, this is the cheapest item on our list and thus we recommend this item if you want a controller for a small system only for a short period.

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The Comparison Table

S. No.ProductsRated Current (Amp)Dimensions (Inches)Weight (Pounds)TypeManufacturer
1Solar Panel Battery Regulator with USB Port Display206.1 X 3.2 X 1.67.2 PoundsPWNALLPOWERS
2HQST 30 Amp PWM Common Solar Charge Controller307.4 X 1.9 X 3.51 PoundPWMWindy Nation
3WindyNation PWM Solar Panel Regulator Charge Controller307.4 X 1.9 X 3.51.05 PoundsPWMWindy Nation
4Renogy Rover 20 Amp DC Input MPPT Charge Controller208.27 X 5.94 X 2.343.08 PoundsMPPTRenogy
5Outback Flexmax MPPT 80 AMP Solar Charge Controller8016.2 X 5.8 X 4.512.2 PoundsMPPTOutback Power
6ZEALLIFE Solar Panels Charge Controller With LED Display84.3 X 1.1 X 3.13.2 OuncesPWMZEALLIFE
7EPEVER 40A MPPT Solar Charge Controller 100V Input409.9 X 7.1 X 2.54.19 PoundsMPPTEPEVER
860A Solar Panel Charge Regulator with LCD Display608.2 X 8.2 X 3.32.95 PoundsMPPTOOYCYOO
920Amp 12V/24V DC Input MPPT Solar Charge Controller208.27 X 5.94 X 2.343.08 PoundsMPPTRICH SOLAR
10MOHOO 20A Intelligent Solar Charge Regulator203.9 X 3.9 X 3.96.7 PoundsPWMMOHOO

What Exactly is a Solar Charge Controller?

When you install a solar system at your house, or at any other surrounding, you increase the risk of damaging its battery pack due to several threats. First of all, your battery might overcharge due to a surge in voltage. Similarly, a low voltage and overheating can also deteriorate the battery.

To prevent all these threats, you can install a solar charge controller. It is an electrical device that monitors and controls the amount of power, current, and voltage entering the battery pack from the solar panel. You need to install it as a stand-alone device and plug it in the network connecting both the solar panel and the battery.

It monitors the voltage entering the battery and shuts off the system if it drops excessively low. In case the voltage of the battery increases rapidly, it shuts off the current to prevent overcharging.

Moreover, a solar charge controller stabilizes the temperature of the battery pack. It includes a temperature sensor and is placed adjacent to the battery pack. It also prevents reverse charging that can occur during nighttime.

Two Different Types of Solar Charge Controllers - PWM and MPPT

There are two most common solar charge controller types in the market. All the products that we have reviewed in this article fall under either of these two categories. Here we have explained the working mechanism and some major differences between these two important categories.

1. Pulse Width Modulation (PWN) Controllers

The PWN type of solar charge controllers works great for small, do-it-yourself systems. They are not as efficient as MPPT controller types as they waste some amount of power during operation.

The working mechanism of PWN includes pulses and trickle charges. This type of controller sends a series of pulses to the battery, that varies depending on the battery level.

When the battery level is low, the pulses act as a continuous flow. But when the battery level rises, they start becoming shorter and acts as a trickle. This property of PWN controllers prevents overcharging of the battery.

When you connect a solar panel of 12 volts into the system, it generates about 16 V to 18 V of voltage. A 12 V battery might not last long with such a large voltage amount.  Thus, when the output voltage passes through the solar battery controller, it lowers the voltage amount to 12 volts.

However, while lowering down the voltage amount to match that with the battery, it will waste some power. This is a major difference between PWN and MPPT controller types, as the MPPT controllers do not waste any amount of power.

2. Maximum Power Point Tracking (MPPT) Controllers

The MPPT solar power controllers are the best option to get maximum power output from a group of solar panels providing high voltage. This controller prevents power loss between the solar panel and the battery pack.

The MPPT controllers can maximize power conversion efficiency and can handle unusual voltage outputs coming from a large number of solar panels. They keep track of the current charge in the battery and adjust the power reaching the battery based on its charge level.

When you connect a 12 V solar panel to a solar system, it generates about 16 to 18 Volts of voltage output. The MPPT controller works similar to PWM and drops the voltage to 12 V when it is connected to a battery of the same voltage.

But the major difference between the MPPT and PWM controllers is that the PWN controllers simply waste the additional voltage. Whereas the MPPT controllers convert the additional voltage to ampere.

Therefore, your battery charges faster when connected to the MPPT controller. It also increases the efficiency of your battery pack by about 30% compared to PWN solar charge controllers.

What Are The Things To Consider Before Purchasing a Solar Charge Controller? - Buyers’ Guide

When you are searching for an appropriate solar charge converter for your battery pack, you need to consider certain factors. We have gathered five different aspects that you should observe while researching your perfect solar charge converter.

Controller’s Type

We have mentioned the major differences and working principles of the two common controller types in the market. Your decision to choose either PWM or MPPT solar charge controller will depend on what solar system you want to connect the controller to.

If you want a controller for small systems like an RV or boat then PWN works great. Else, if you are planning to connect it to your residential solar system, that requires more efficiency then MPPT is an option for you.

Battery Voltage

What is the voltage of the battery you are using for your system? Most of the solar systems feature a battery of either 12 volts, 24 volts or 48 volts. However, when you have to power a large system then the battery voltage also increases. What if your battery voltage is 70 volts and you purchase a controller that supports only 12 volts?

Thus, always read the voltage supported by the controller and the battery voltage before finalizing your purchase.

Maximum Current Output

The solar panels can send a diverse range of current to the solar charge controller. Thus, the controller should be able to process the maximum current sent by those panels.

In addition, the controller should also manage the current sent to the battery. High current can damage the battery and likewise, a low current might affect the devices that are plugged into the system.

Maximum Input Voltage

Every solar charge controller comes with an input voltage limit. Make sure the limit is always more than the highest voltage provided by the solar panel in the system. You may even decide to connect multiple solar panels together in order to maximize the power output.

Thus, we recommend you purchase a solar charge converter of a higher maximum input voltage. This lets you connect multiple solar panels of higher voltage without damaging the battery pack.

Additional Features

Apart from all the technical details mentioned above, you need to focus on additional features regarding safety, display system, and temperature compensation. The solar charge controller should protect your system from short-circuit, overcharging, discharge, and reverse charging.

If the controller features an LED display then it will be easier for you to read the charge, voltage input, and other important details. Finally, temperature compensation is another important feature that decreases the amount of voltage reaching the battery. This will prevent the battery from overheating.

Frequently Asked Questions (FAQ)

The solar charge controller’s working mechanism is really simple. You just need to connect it between the solar panel and the battery pack of the solar system. What it does is, it regulates the power that is being transferred from the solar panel(s) to the battery.

This simple process will extend battery life. It will also increase the solar system’s efficiency by upto 50%.

  In general, yes. This is because they handle higher voltage and does not waste any power during operation.

However, you should consider your case when deciding which controller is better. If you want to regulate a smaller system then we always recommend you to select the PWM controller, as they are much cost-effective and works best with low-voltage.

No. The solar charge controllers are manufactured specifically for solar energy systems and should not be connected with other renewable energy systems. If you want to regulate a wind power energy system then you need to research specific charge controllers designed for such systems.

  If you cannot decide which controller you should purchase then you need to do some calculations. First, read the voltage and current produced by your solar panel(s). Then add 25% of their value to both of the readings. Now you need to search for a solar charge controller that has its voltage and current readings higher than the amount calculated.

This makes sure the controller can handle any surge in the voltage and current produced by the solar panel.

Conclusion

Here, we have reviewed 10 solar charge controllers with their specifications, detailed features and pros/cons. Most of the solar controllers protect your solar energy system from certain kinds of threats. All of them fall under the category of either MPPT or PWM. We have provided the difference between these two categories in the above section.

Make sure you read the specifications and detailed features of your desired product thoroughly. You may want to power your solar system of 36V battery but you might mistakenly purchase a controller that supports only 24V battery. Most of the controller does not support money back policy. Thus, you need to make your purchase decision attentively.

In Hurry? Editor's Choice
Renogy Rover 20 Amp DC Input MPPT Charge Controller