Top 17 Best 20 Amp Solar Charge Controllers in 2022

Finding the right 20 amp solar charge controller has become a challenging task because there are so many choices out there. This is why we’ve compiled a list of the best 20 amp solar charge controllers so that you can compare them and choose the right one to fulfill your needs.

All the 20 amp solar charge controllers featured on this page are independently chosen. When you make any purchase through links on this site, we may earn a small commission at no extra cost to you.

Followings are the best-selling 20 amp solar charge controllers on Amazon today:

Last update on 2022-10-05 / Affiliate links / Images from Amazon Product Advertising API

List of the Best 20 Amp Solar Charge Controllers

To make your choice easier, we’ve listed here a collection of the best-selling 20 amp solar charge controllers available on the market today:

1
Highlighted Features:
  • 20A SOLAR CHARGE CONTROLLER: 20A Solar panel battery intelligent regulator are UL 1741 certified, the solar charger controller compatibility with 12V 24V system. Discharge current: 10A, build-in industrial microcontroller, automatically manage the working of solar panel and battery in solar system. Dual USB output 5V/2.5A (max), to support mobile phone charging.
  • SIX PROTECTION FUNCTIONS: 20A solar controller has Short-circuit protection, Overload protection, Over Current Protection, Overcharge protection, Under-voltage protection, Over-voltage protection. Fully 3-stage PWM charge management, improve system efficiency and prolong the life span of the battery.
  • BATTERY TYPE: The charge regulator is only suitable for lead-acid batteries: OPEN, AGM, GEL, it is not suited for nickel hydride, lithium, Liions, or other batteries. In order to protect the lifespan of the battery, once the voltage of the battery drop below 8V, the solar controller will turn off automatically. Note: If it cannot be charged or show a moon symbol, please check the panel has power or whether the power is lower than the voltage of the battery.
  • FUNCTIONAL LCD DISPLAY: Intuitive LCD display that can clearly indicate the status and data is able to switch modes and parameter configuration, suitable for home, industrial, commercial, etc.
  • EASY TO USE: The charge controller should connect the battery first, then the solar panel, finally the load. The disassembly sequence is contrary to the wiring order. Dual Mosfet Reverse current protection, low heat production. Note: The charge controller will heat up when it is running. Please be careful to install the charger controller in a flat, well-ventilated place.
2
Highlighted Features:
  • 4-STAGE PWM Technology: The Voyager controller is equipped with advanced smart PWM technology with high charging efficiency. It provides 4-stage charging (Bulk, Absorption, Float and Equalization) in order to protect the battery.
  • IP67 Rated Waterproof: With an IP67 rated waterproof design, the Voyager controller is suitable for outdoor use and will remain fully operational when exposed to water spray, rain, or condensation.
  • Multiple Protections: The Voyager controller has multiple intelligent protections against reverse polarity, over charge, short-circuit, reverse current, overload, and over discharge, keeping your battery fully protected.
  • Support Multiple Battery Types: The Voyager controller can automatically sense 12V or 24V system voltage when paired with a Gel, AGM, or Flooded batteries. It also comes with a Lithium activation feature.
  • Backlit LCD displaying system: The Voyager comes with an LCD display showing accurate and timely information including charging current, generated energy, temperature, battery voltage, and error codes that allows users to monitor and control charging.
3
Highlighted Features:
  • LCD Screen Display: This solar panel charger controller with LCD digital screen which is with energy-saving backlight to display all parameters, display better, more clea and more power-efficient
  • Fully Automatic: This solar panel regulator with output switch, easy to operate. The battery indicator light on the controller will be on if successfully connected
  • Power-efficient: Microcontroller digital accuracy, when solar panel regulator is charging, the arrow between the panel icon and the battery icon will flash fastly, when the battery was a full charge, it will be slow flashed, will stop charging. The function of the solar charge controller is to protect the voltage overshoot and discharge. Available for DC lamp and phone charging (Please correctly connect the positive and negative terminals, makes sure all terminals are connected tightly.)
  • Rated Discharge Current : 20A; USB Output Voltage: 5V; USB Output Current: 1.5A; DC Output Voltage: 12V-24V, DC Output Current: 20A. To connect your load and the cables with the right polarity and then connect with the load output port of the controller. Pay special attention to + - polarity to avoid reversed connection
  • Protection Functions: Overload and Short circuit protection, Lightning protection, Under-voltage protection, Over-charging protection, Reverse Polarity protection. Use PWM and WPC mode, improve system efficiency and prolong the life span of the battery
Sale4
Highlighted Features:
  • 【Batteries】 Compatible with various deep cycle batteries: Sealed, Gel, Flooded, and Lithium.
  • 【12V/24V】 Detect 12V or 24V DC system voltages automatically. Innovative MPPT technology with high tracking efficiency up to 99% and peak. Conversion efficiency of 98%.
  • 【Protection】 Electronic protection: Overcharging, over-discharging, overload, and short circuit. Reverse protection: Any combination of solar module and battery, without causing damage to any component.
  • 【Design】 Die-cast aluminum design for heat dissipation and the capability of measuring the battery's temperature and remote monitoring. Customizable charging voltages.
  • 【Bluetooth】 RS232 port allows to communicate with the BT-1 Bluetooth module, which can pair with smart phone app.
Sale5
Highlighted Features:
  • IP68 Rated Waterproof, this Intelligent 4-stage PWM solar charging controller is suitable for outdoor use,you can use it for solar fencing system, solar monitoring system, solar lighting system or other solar system.
  • It has short circuit protection, over charge protection, over discharge protection, reverse protection. Can extends battery life time.
  • Can automatically senses 12V or 24 Volt for your batteries, working mode of the solar charge regulator is 24 hours.
  • With short cables for connecting with solar panel, battery and load, and three LED lights can help you to know solar charging status, battery level, and load status.
  • Easy to mount directly on the frame of the solar panel, with heat sink design at bottom and 2pcs mounting holes. its small size also can saves you some space.
6
Highlighted Features:
  • 【HIGH TRACKING EFFICIENCY】- HQST 12V 20 amp Solar charge controller adopts advanced MPPT technology that ensures fast and stable track of the maximum power point, high tracking efficiency of up to 99%, and peak conversion efficiency of 98%. Maximizing the energy from solar panels to charge your system. It auto-detects 12V or 24V DC system voltages. The max load output current is 20A. If it exceeds the 20 amp DC load (240 watts), the overvoltage protection will turn off the output.
  • 【PARALELL CHARGE FUNCTION】- 2 HQST MPPT controllers of the same series(M2420N/M2440N/M4860N) can work together to charge the same battery with the parallel charge cable (not included), to meet high power charging requirements and 2 controllers should set the same battery pack voltage. Our negative grounded controller offers overcharging/over-discharging/overload/overheat/short circuit/reverse protection. The maximum degree avoids the damage due to system fault or installation error.
  • 【LCD SCREEN DISPLAY & REMOTE MONITORING】- 40A solar controller is equipped with an LCD screen and LED fault indicators, which can check device operating data and modify controller parameters. Built-in Bluetooth module, you can download the ‘’ChargePro 2.0'' (new version) or the "PVChargePro'' (old version) app for remote monitoring that keeps 300 days of historical data. PS: the app of android version needs to turn on location and Bluetooth to connect.
  • 【HIGHER HEAT DISSIPATION EFFICIENCY & FULL-LOAD WORKING】- Die-cast aluminum heat sink makes the heat dissipation efficiency higher, which can minimize the power loss from heat. Filling inside the controller with gel is for better PCBA cooling conduction and prevents water and other damages, extending the controller service life. With the premium IC and better PCBA, this controller can work under full load even in high temperature environment.
  • 【COMPATIBLE WITH MULTIPLE BATTERY TYPES】- The mppt solar charge controller is compatible with Flooded, AGM, Gel, and Lithium batteries. User mode allows the buyer to set their charging parameters. 3-Stage Charging: boost, float, and equalization. HQST provides a 3-year warranty and lifetime technical support. Any questions, please feel free to contact us through amazon email.
7
Highlighted Features:
  • 20A Solar Charge Controller - It can automatically detect 12V or 24V PV systems. Works with Sealed, and Flooded lead-acid batteries. The optimized 3-stage battery charging system helps to regulate the flow of electricity, thereby prolonging your battery's lifespan.
  • Accurate LCD Display - The large digital LCD display clearly indicates the working condition and accurate operating data. It helps you monitor your PV system in real-time.
  • Safe to Use - Your valuable PV system needs a little charge controller to provide full protection throughout the day. It provides reverse polarity protection and block reverse current at night for your solar panel and battery. It also offers short circuit, overcharge, over discharge, and overload protection.
  • Easy to Install - This PWM solar charge controller is designed with corresponding icons on each connector, which will help you get quick installs. You should first connect the battery, then the solar panel, and finally your light bulb, or mobile device via the USB-A port.
  • Multiple Applications - Connect it with your solar panel system and battery to work on an RV, cabin, chicken coop, workshop, garage, or harbor freight to provide lighting. It can also be used to power your home's outdoor security camera system via its USB-A port.
8
Highlighted Features:
  • EASY-READ BACKLIT DISPLAY: To check the PV status and the Battery status easily, the 20A solar panel regulator will cycle the PV input current and the battery voltage on the main interface with real-time value every 3 seconds, also has color code icons. With a larger screen and 50% brightness in no operation, the solar charge controller is easy to read in dim light. Allows you to see exactly what the controller was doing and how much power is being drawn in from the panel(s).
  • Li COMPATIBILITY: Not only compatible with traditional battery, the PWM controller also has clear and special icons for various Lithium batteries on the LCD screen, such as LFP for LiFePO4, Li for Ternary lithium battery, LTO for Lithium-Titanium-Oxide. With setting to Li battery type, this solar charge controller also has a function to jumpstart your lithium battery in case it gets overly discharged. Don't need to buy a new controller for the upgraded Lithium-ion batteries.
  • BATTERY COMPATIBILITY AND MAINTENANCE: Compatible with various 12v or 24v batteries, such as SLD, FLD, GEL, AGM, SLA, LiFePO4, ternary lithium battery and LTO battery. Including the ability to program the solar charge controller for best charging and maintenance of various battery types. The solar panel regulator is dependable to be your battery maintainer.
  • SOLAR PANEL REGULATOR: Max PV input voltage 55 volts, while most controller can only handle 50 volts PV input. This solar panel regulator can handle 300 watts input for 12 volts battery system, 600 watts input for 24 volts system. The Max PV input voltage is higher than most controller, which can produce more power as well.
  • NEAT AND SAFE WIRING: Come with 3 pairs of spade terminals, it is easy to grip the wires more firmly and make a neat wiring. Please note that turn the screwdriver counterclockwise first, in order to open up the wire clamp holes. hook up the battery first, positive wire, then negative wire. After that, connect the controller to the solar panel, please note that do not disconnect the battery when the solar panels are active.
Sale10
Highlighted Features:
  • 【Solar Charge Controller】The solar charger controller compatibility with 12V 24V system. Discharge Current is 20A, build-in industrial micro controller, automatically manage the working of solar panel and battery in solar system. Dual USB , to support mobile phone chargeing.
  • 【Multiple Protection Functions】Solar controller has short-circuit protection, open-circuit protection, reverse protection, over-load protection.Improve system efficiency and prolong the life span of the battery.
  • 【LCD Display】Charge controllers for solar panels comes with a display that can clearly indicate the status and data, it can be conveniently switched modes and parameter configuration, suitable for home, industrial, commercial etc.
  • 【Solar Charge Controller Control】Charge controller for protecting the lifespan of your battery, once the voltage of the battery out of range, the solar controller will turn off automatically.
  • 【Easy to Use】The charge controller should connect the battery first, then the solar panel, and finally the load.LCD display, adjustable parameter, solar panel charge controller suitable for home, industrial, commercial etc.
11
Highlighted Features:
  • 【Dual USB 60A MPPT Solar Charge Controller】 Using innovative MPPT technology high tracking efficiency up to 99%;Please refer to the information if you are not familiar with Mppt technology:There are many kinds of MPPT technology,Our Solar Controller Mppt technology is to detect the maximum charging current,not the boost type or the automatic charging of the solar panel voltage.
  • 【Multi-function LCD Displays】This controller is 12V/24V 12V/24V automatically adapt,first connect the battery,then connect the solar panels,when you first use it, make sure the battery has enough voltage,so that the controller can recognize the correct battery type.
  • 【Reliable Protection】overvoltage, short circuit, overload, overcharge, over discharge protection function;Automatic focusing MPPT tracking charging, high charging efficiency,Non-stop detection during charging, bidirectional focusing tracking.
  • 【Industrial-grade Master Chip】16AD sampling accuracy, temperature Charging current, discharge current accurate real-time display, power generation at a glance.
  • 【Please Attention】Pls note the connection ways,Connect the battery first,then connect the solar panel(You can't reverse the order).The place that don't understand pls contact us,Thanks
12
Highlighted Features:
  • 【Innovative MPPT Design】Die-cast aluminium design ensuring excellent heat dissipation and Renogy Maximum Power Point Tracking technology with a high tracking efficiency of up to 99 percentage and peak conversion efficiency of 98 percentage It is the best charging solution even in cloudy environments where the max power point of the solar panels will fluctuate all day
  • 【12V/24V Automatically Detect】12V /24V Automatic System Recognition (for non-lithium batteries).
  • 【Full System Protection】Meant to safeguard your system, the self-diagnostic capability can assess and protect against reverse polarity, battery overcharging, battery over-discharging, overload, short-circuiting, and reverse current
  • 【4-Stage Safely Charging】Features 4-stage charging (Bulk, Absorption, Float, and Equalization) of Lead Acid Batteries and 2-stage charging (Bulk and Absorption) for Lithiuim batteries as well as Lithium Reactivation
  • 【Multiple battery adaptation】 4 Deep Cycle Battery Pre-Sets: Gel, Flooded, Lithium-Iron Phosphate (12. 8V), and Sealed/AGM
Sale13
Highlighted Features:
  • Fit for RVs,Caravans and boats which with two batteries. Support 3 battery types: GEL,Flooded,Sealed
  • Battery Voltage: 12V/24V auto; Rated Charge & Discharge Current: 20A
  • High efficient PWM charging, improve the solar system performance and protect the battery
  • Protection: over charging, short-circuit, reverse polarity, revert current to PV
  • 12 months warranty and professional after-sale service.
Sale14
Highlighted Features:
  • â–ș20A SOLAR CHARGE CONTRALLER:Discharge Current:20A; USB Output Voltage: 5V/3A; Battery Voltage: 12V/24V auto. Adjustable power rate with dual USB ports; 3-Stage(Bulk, ABS, Float) charge management and 4-Stage PWM charge. Please notice the controller might be power off if the battery voltage is too low.Suitable for lead-acid batteries: OPEN, AGM, GEL.
  • â–șFunctionality: Equipped with industrial-grade STM 8 microprocessor to control the charger and discharge process and it has reliable battery to charge and discharge period management.Intuitive LCD display that can clearly indicate the status and data is able to switch modes and parameter configuration, suitable for home, industrial, commercial, etc.
  • â–șMutiple Electric Protection: Built-in overcurrent protection, short circuit protection, reverse connection protection, open circuit protection, all automatic recovery, no damage to the controller, a reliable protector for your devices.
  • â–șGood Heat Dissipation: Dual mosfet reverse current protection, low heat production(ALL electronic components generate heat when they are running,it is better to shelter them for better heat dissipation, avoid direct sunlight exposure or damp place)
  • â–șNOTICE: Warranty only against products from EpRec. 12 months honor warranty from EpRecPlease note that when using the controller, you must first connect the battery and then connect the solar panel, otherwise there will be problems such as identification errors, and the error can be solved by installing the correct steps to connect.
15
Highlighted Features:
  • 20A solar Charge controller, 12V24V Auto, support 60-480W solar pane, Max VOC of Solar panel is 55V;
  • Solar Regulator 20a, work with 60W~480W Solar power, Max input 480W 75V;Max input 240W Solar Power when battery is 12V, Max input 480W 75V when battery is 24V.
  • Work with Lithium or lead-acid battery charging parameter preset, Advanced MPPT maximum power point tracking technology solar charge controller, tracking efficiency is no less than 99.5%.
  • Controller Rated charge current 20A, the charging maximum conversion efficiency can reach 97 %.
  • Solar controller 20amp with Excellent heat sink design and Multiple load control modes: 24Hours Working, Light Control, Light+Time Control
Sale16
Highlighted Features:
  • 【Solar Charge Monitor 12v】The solar charge controlers compatibility with 12V 24V system. Discharge Current is 20A, It helps you manage the working of solar panels and battery in solar systems automatically with the built-in industrial microcontroller. Dual USB output 5V/2A to support mobile phone charging.
  • 【SAFE TO USE】This solar charger controller is equipped with overcurrent protection, short-circuit protection, inverse connection protection, low voltage, and overcharge protection, and have fully 3-stage PWM charge management. Smart LCD display shows the charging status and battery status to make you more assured of charging. Charge controllers for solar panels should connect the battery first, then the solar panel, and finally the load.
  • 【LCD Display】Comes with a display that can clearly indicate the status and data, solar controller can be conveniently switched modes and parameter configurations.
  • 【Battery Type】Adaptable to User, Flooded, AGM, GEL, LifePO4, Lithium, and other customized battery types. For protecting the lifespan of your battery, once the voltage of the battery is out of range, the solar controller will turn off automatically.
  • 【WARRANTY】 12-month warranty and lifetime technique support. If there is any problem, please contact us through Amazon, we will arrange a refund or a replacement.
Sale17
Highlighted Features:
  • â–șRated Discharge Current: 20A; USB Output Voltage: 5V/3A; Battery Voltage: 12V/24V auto. Adjustable power rate with dual USB ports; 3-Stage(Bulk, ABS, Float) charge management and 4-Stage PWM charge. Please notice the controller might be power off if the battery voltage is too low.
  • â–șFunctionality: Equipped with industrial-grade STM 8 microprocessor to control the charger and discharge process and it has reliable battery to charge and discharge period management
  • â–șMutiple Electric Protection: Over-current and short-circuit protection, inverse connection protection, low voltage and overcharge protection
  • â–șGood Heat Dissipation: Dual mosfet reverse current protection, low heat production(ALL electronic components generate heat when they are running,it is better to shelter them for better heat dissipation, avoid direct sunlight exposure or damp place)
  • â–șEasy to Use: Comes with a display that can clearly indicate the status and data, it can be conveniently switched modes and parameter configuration, suitable for home, industrial, commercial etc.

Last update on 2022-10-05 / Affiliate links / Images from Amazon Product Advertising API

Guide for Choosing the Best 20 Amp Solar Charge Controller

If you are ever in the market for buying 20 amp solar charge controller, you probably know how difficult it is to find the best one for the money. You may get confused thinking about:

  1. Who makes the best quality 20 amp solar charge controller in the industry?
  2. Which one is the best 20 amp solar charge controller for the money?
  3. How to choose the right 20 amp solar charge controller on the market?

When it comes to choosing the right 20 amp solar charge controller among a wide variety of options, you should consider some factors. Those factors may include quality, performance, features, value, etc. Without considering those factors you may end up buying a poor quality 20 amp solar charge controller that will not provide you with the best value for your money.

Before investing in 20 amp solar charge controller, you should find the answer to the following questions:

  • Do you really need to buy 20 amp solar charge controller?
  • How much value you are expecting from the 20 amp solar charge controller?
  • What factors do you believe should be considered when buying 20 amp solar charge controller?

To help you make an informed decision, here we are going to discuss the factors that you should consider when shopping for 20 amp solar charge controller whether online or from any retail store.

Product Quality

Product quality should be the most important factor to consider when shopping for 20 amp solar charge controller. You are going to use this product for a long time. So, you should consider the quality of the 20 amp solar charge controller and make sure it will fit your requirement.

Features

The 20 amp solar charge controller comes with a lot of features and functionalities. In this article, we’ve mentioned the features of each of these 20 amp solar charge controllers so that you can choose the right one for your needs. You should read all the features of the 20 amp solar charge controller before making a decision.

Price

You can get an array of 20 amp solar charge controllers, from the cheapest to the most expensive. The 20 amp solar charge controller that costs more is usually made from better materials and will last longer than a cheaper one. But if you want to be able to purchase a new 20 amp solar charge controller every few months, you may want to consider the budget-friendly options.

Reviews and Ratings

Finally, the customer reviews and ratings should be considered when buying 20 amp solar charge controller. Good customer reviews and ratings indicate that the 20 amp solar charge controller is going to perform well whereas bad ratings and negative reviews indicate that people already have faced problems using that particular product.

Final Verdict

We hope you enjoyed our listing about the best 20 amp solar charge controllers. As you can see, there are still so many alternatives to choose from. So, it’s better to check out each of these items carefully and pick the right 20 amp solar charge controller that сan satisfies all your requirements.

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