Best 20A Solar Controller in 2022 [*Top Picks*]

Looking for the best 20a solar controller on the market? We’ve got you covered. Check out our ratings of absolute bestsellers below and make a final decision.

8576 Reviews Scanned

  • Renogy Voyager 20A 12V/24V PWM Waterproof Solar Charge Controller w/ LCD Display for AGM, Gel, Flooded and Lithium Battery, Used in RVs, Trailers, Boats, Yachts, Voyager 20A
    Bestseller #1
    Renogy Voyager 20A 12V/24V PWM Waterproof Solar Charge Controller w/ LCD Display for AGM, Gel, Flooded and Lithium Battery, Used in RVs, Trailers, Boats, Yachts, Voyager 20A (386)
      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.
  • EEEKit 20A Solar Charge Controller, 12V/24V Solar Panel Battery Intelligent Regulator with Dual USB Port PWM Auto Parameter Timer Setting Adjustable LCD Display, Blue
    Bestseller #1
    EEEKit 20A Solar Charge Controller, 12V/24V Solar Panel Battery Intelligent Regulator with Dual USB Port PWM Auto Parameter Timer Setting Adjustable LCD Display, Blue (1008)
      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. 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.
  • ALLPOWERS 20A Solar Charger Controller Solar Panel Battery Intelligent Regulator with USB Port Display 12V/24V
    Bestseller #1
    ALLPOWERS 20A Solar Charger Controller Solar Panel Battery Intelligent Regulator with USB Port Display 12V/24V (24)
      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.
  • Renogy Rover 20A 12V/24V Auto DC Input MPPT Solar Charge Controller Parameter Adjustable LCD Display Solar Panel Regulator fit for Gel Sealed Flooded and Lithium Battery, Rover 20A
    Bestseller #1
    Renogy Rover 20A 12V/24V Auto DC Input MPPT Solar Charge Controller Parameter Adjustable LCD Display Solar Panel Regulator fit for Gel Sealed Flooded and Lithium Battery, Rover 20A (386)
      【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% and peak conversion efficiency of 98%. 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】Automatically detects 12V or 24V DC system voltages (for Non-Lithium battery types), and the LCD screen and multiple LED indicators display the solar charging and battery operation information, customizable parameters, and error codes. 【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 【Diverse Load Control】 Connect DC appliances directly to the optional Load Terminals and monitor consumption or set up timer controls directly from the controller 【Remote Monitoring】RS232 communication port allows the Renogy Rover to communicate with the Renogy BT-1 Bluetooth module (NOT included in the package, highly recommend to add-on ) that will enable you to monitor the status and productivity of your panels through the Renogy DC Home App.
  • HUINE 20A 12V 24V Auto IP68 Waterproof PWM Solar Charge Controller Solar Panel Battery Intelligent Regulator for Solar System Caravan Boat(24 Hours Working Mode)
    Bestseller #1
    HUINE 20A 12V 24V Auto IP68 Waterproof PWM Solar Charge Controller Solar Panel Battery Intelligent Regulator for Solar System Caravan Boat(24 Hours Working Mode) (34)
      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.
  • Victron Energy SmartSolar MPPT 100V 20 amp 12/24/48-Volt Solar Charge Controller (Bluetooth)
    Bestseller #1
    Victron Energy SmartSolar MPPT 100V 20 amp 12/24/48-Volt Solar Charge Controller (Bluetooth) (584)
      Battery Voltage: 48V Select -- Rated Charge Current: 20A -- Nominal PV Power: 1160W -- Max PV short circuit current: 20A -- Automatic load disconnect: Yes -- Max PV open circuit voltage: 100V -- Peak Efficiency: 98% Bluetooth Smart Built-In: The wireless solution to set-up, monitor, update and synchronise SmartSolar Charge Controllers Solar Charge Controller - A solar charger gathers energy from your solar panels, and stores it in your batteries. Using the latest, fastest technology, SmartSolar maximises this energy-harvest, driving it intelligently to achieve full charge in the shortest possible time. SmartSolar maintains battery health, extending its life. MPPT: Ultra Fast Maximum Power Point Tracking - By constantly monitoring the voltage and current output of your solar (PV) panels, MPPT technology ensures that every drop of available power is rinsed out of your panels, and harvested for storage. The advantage of this is most noticeable when the sky is partially clouded, and light intensity is constantly changing. 5 Year Warranty
  • EPEVER 20A MPPT Solar Charge Controller 12V 24V Auto, Max 60V Input Solar Panel Charge Regulator Negative Grounded with LCD Display for Lead-Acid and Lithium Batteries
    Bestseller #1
    EPEVER 20A MPPT Solar Charge Controller 12V 24V Auto, Max 60V Input Solar Panel Charge Regulator Negative Grounded with LCD Display for Lead-Acid and Lithium Batteries (32)
      【Advanced MPPT technology】MPPT Solar Charge Controller with Ultra-fast tracking speed and up to 99.5% tracking efficiency, peak conversion efficiency of 98%. Maximizing the energy from solar panels to charge your system. 【Multiple battery options】Negative Ground Charge Controller Automatic recognition of 12V/24V systems, compatible with various Deep Cycle battery options: Lead-acid battery(Sealed, Gel, Flooded and User) and Lithium battery(LiFePO4,Li(NiCoMn)O2, and User). 【4-Stage Safely Charging】Tracer AN series controllers With the adaptive 4-stage (Bulk, Boost, Float, and Equalization)charging mode, can effectively prolong the life-cycle of batteries, significantly improve the system performance. 【LCD Display】Solar panel charge controller with LCD screen, can view working data and error code in real time, die-cast aluminum design for efficient heat dissipation, support remote meter MT-50, APP or PC software. 【Multiple Protection】Solar controller with Short-circuit/open-circuit/reverse/over-load protection, and overheating power reduction protection, suitable for home, industrial, commercial etc.
  • RICH SOLAR 20 Amp 12V/24V DC Input MPPT Solar Charge Controller with LCD Display Solar Panel Regulator for Gel Sealed Flooded and Lithium Battery Nagtive Ground
    Bestseller #1
    RICH SOLAR 20 Amp 12V/24V DC Input MPPT Solar Charge Controller with LCD Display Solar Panel Regulator for Gel Sealed Flooded and Lithium Battery Nagtive Ground (189)
      【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.
  • HQST MPPT Solar Charge Controller 20 Amp Negative Grounded Controller with Bluetooth LCD Display, 12V/24V DC Input Solar Panel Regulator for Gel Sealed Flooded and Lithium Battery
    Bestseller #1
    HQST MPPT Solar Charge Controller 20 Amp Negative Grounded Controller with Bluetooth LCD Display, 12V/24V DC Input Solar Panel Regulator for Gel Sealed Flooded and Lithium Battery (379)
      【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】- 20A solar controller is equipped with an LCD screen and LED fault indicators, which can not only check device operating data and status but quickly determine system faults 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. 【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.
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Best 20a solar controller to Get in 2022: How to Pick the Right One

We know that finding the best 20a solar controller is not an easy task. Modern manufacturers offer a truly massive selection from which one can scatter eyes. Check out our guide to make the right choice.

Find the Best 20a solar controller: Quick Buying Guide

The main thing is not to rush and buy the most expensive or, on the contrary, the cheapest, newest, or best-rated 20a solar controller. It's necessary to find out what is right for you. Otherwise, you will simply waste your money and be unhappy with your purchase.

First of all, ask yourself, what should I look for in a 20a solar controller? Indeed, there are such features that you might need, while other buyers might not even pay attention to them. Define the main parameters that you should check and analyze first. Ask, who makes the best 20a solar controller? Which models are popular with buyers and why? Which products have certain benefits and drawbacks? Answering these simple questions will help you narrow down your search and discard inappropriate options right away.

You can create a list or even a table to make comparing main factors more comfortable and visual. Typically, within their 20a solar controller comparison, most customers pay attention to:

  • technical details and specifications provided by the manufacturing company;
  • 20a solar controller brands (their reputation, history, and liability);
  • customer reviews and ratings;
  • value for money;
  • warranty and price, etc.

While you can find out the exact data about a particular item from product information, which is usually in the public domain, you can only get subjective data about the comfort of use and convenience if you find and compare 20a solar controller reviews from real buyers. While they are not always fair, they can still give you more insight into the pros and cons and whether you should buy this or that stuff. Just stay away from untrustworthy testimonials that look like paid texts.

Of course, the complete list of essential parameters does not end there, and you probably have something to supplement it with. If you are a responsible buyer, conduct comprehensive research on all criteria that interest you. Only in this case can you be sure that you will not spend your money in vain. Of course, writing your own 20a solar controller ratings can be time- and energy-consuming and, let's be honest, boring, so you can trust our 20a solar controller buying guide.

How We Pick and Rate Each 20a solar controller

When compiling this top 20a solar controller list, we tried to be unbiased and comprehensively analyze all the characteristics of goods, as well as when writing other ratings. It implies the use of specialized software based on artificial intelligence. Automated algorithms help us quickly analyze the given parameters and determine the best and quality 20a solar controller. Thus, we identify a list of top models in different categories so that every reader with various requests, tastes, and budgets can find the model that suits them the most.

Honesty, transparency, and impartiality are at the core of how we select products and how we test each 20a solar controller. We strive to cover the largest possible number of items, manufacturers, customer ratings, and so on so that our list includes both premium and affordable models, both time-tested and the freshest products. Of course, buyers' tastes and needs, as well as the market situation, change from time to time. To keep up with the times, we regularly update our list and try to offer only the latest collection.

Please share your opinion about searching and choosing the best 20a solar controller. Which parameters are the most important to you? Do you trust customer reviews? Or do you prefer to check all the information by yourself? Tell us which 20a solar controller is the best for you and why in the comments below.

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