Solar Charger Controllers

Best MPPT solar charge controllers, Inverters & Hybrid Inverter Chargers. EPEVER, EPSOLAR charge controllers.
OUYAD Solar Leading Manufacturer of Solar Panels, Batteries, Solar Systems, Inverters, etc. Provide Complete Custom Made System Solutions for Primary Global Solar Markets Meeting.

How to Buy Solar Controller?

OuyadSolar offers complete range of solar controllers which helps convert existing power backup system into a solar system at minimal investment. This section helps you in choosing the right solar controller for your needs.

What Is Solar Energy?

Solar Energy Definition

Solar energy is the energy that is generated from the sun and it is the ample amount of the renewal source of energy on the Earth. This solar energy is trapped in various ways to generate electricity which is used for various purposes for homes, businesses, Utilises, and more. The solar power is captured and converted into usable energy with the help of solar panels or solar thermal collectors.

solar energy is the clean source of renewable energy and also plays an important part in reducing global warming by decreasing the carbon footprint.

Future Growth Of The Solar Energy

China reveals that by the year 2030 it would be able to raise the renewal power capacity upto 500GW from 150GW which means that it would meet 50% of the total energy requirement from renewable energy. As for solar energy during the year 2014 – 2021, India has increased its capacity 15 fold. The government of India focused on the target of increasing the solar capacity of 37GW by the year 2022, to a staggering 270 GW possibility even more by 2030.

According to China Solar, the solar energy generating capacity increases 335% to 7.4 GW from January to September from 1.73 GW a year ago. India increased 2,835 MW of the solar capacity in the third quarter during the month of July-September of the year 2021 which is 14% compared to the 2,488 MW installed in Q2 2021. Year over year the installation of solar energy is flourished upto 547%. The solar dominating the capacity which is added accounted for close to 60% after the thermal power which contributed only 21%.

Definine Solar Charge Controller

Solar Charge Controller Definition

The solar charge controller helps in balancing the power which flows through the battery bank and the solar panels. It checked whether the deep cycle batteries are not overheated during the day and the power does not flow back to the solar panels and drain the batteries. Some of the solar charge controllers are provided with some amazing features like lighting and load controller but the solar charge controller setting with managing the power with its key job.

Additionally, the charge controllers can instinctive non-critical load from the battery bank when the voltage decreases below a certain threshold. This method is known as the low voltage disconnect(LVD) and it limits the overcharging of the energy of the battery.

How The Solar Controller Works?

The solar charge controller is run by regulating the voltage and the current which passes through the solar panels to the battery. It also helps in detecting and screening the battery voltage when reduced by the current when the battery is charged fully. The charge controller helps to float in the charge which helps the battery to make it ready for usage.

How To Use Solar Charger Controller?

Nowadays the method of producing electricity from solar radiation becomes more trendy than other sources of energy and solar panel are totally pollution-free and they also do not require much maintenance. The solar panels are then used in the charged battery. A set of amplifiers is needed to detect the solar panel voltage and also a load of the current.

When the solar battery is charged fully then it will show a greet light which indicates whether it is undercharging, overloading, and the deep discharge states of the LED which are used in it. A MOSFET is present in the solar charge controller which helps in cutting the offload in the low condition or the overloading circumstances. The solar energy used a transistor to dummy load when the solar battery obtains full charging. This controls the battery to not getting warmed.
The main functions of the units are:

It helps in charging he batteries. It shows indocation when the battery is fully charged.
It helps in monitoring the battery voltage and also when it goes to minimumum then it cut off the supply to laod switch to dtaced the oad connection.
When the battery voltage goes to overload then this load switch turn off to make sure that the load is disconnected from the battery supply.

The solar panels help in gathering the solar power and then transfer the same into electrical energy. The solar panel’s operators by the Ohmic materials for the internal and external connection. The electrons which are generated in the n-type materials are flow by the electrode to the wire which is connected to the battery. With this process, these electrodes reach the P types of materials and then the electrodes merge with the holes when the solar panels are gathered to the battery, and then both the systems form a series which are connected sequentially.

The solar panels are consist of four methods these are overload, under charge, low battery, and deep discharge condition. The outer form of the solar energy is joined to the switch which helps in feeding the solar battery. Then it goes to the load switch and then to the output load.

This process has 4 different types such as over parts-over voltage indication and detection, overcharge detection, overcharge indication, low battery indication, and detection. when the overcharging of the battery happens then the power from the solar panels is neglected through a diode to the MOSFET switch. When the low charge happens this MOSFET switch is disconnected to turn it into the off condition and with this, it switches off the power supply to the load.

Benefits Of Solar Smart Charge Controller

The solar battery chargers are very useful as it helps in extending the battery life and also its is very safe and reliable and also do not need much maintenance. Apart from all these the solar battery charge also provides many services to the consumers. Now let’s look at them. Shall we!

Claen, Quite And Comfortabel To Use: The solar cahrge controller do not use any kind of fossiel fule which helps in reducing he carbon footprint and also this is run by the solar energy whoch is the clean source of energy. It has no moving parts and thus it produce no noices and also it can be used easily.
The Batteries Are Charged At Right Voltage: The solar charges ensures that the solar battries gets charged in right voltage based on their situation of the charge.
Connectivity: The solar charge controller works by directly connected to the solar panels to the battery bank through the solar charge controller circuit and During this charging there is the constant connection is going between the solar panels and the battery bank. as the battery charges the voltage then increases and thus the voltage output of the solar panels increases at the same time.
Low Maintainance: As the slar controller have zero fuel and talso have no moving parts which makes it clean witout spending a huge amount of money.

Types Of Best Solar Charge Controller In China
There are a lot of solar charge controllers present in the Indian market but among them, you have to choose which one is perfect for your battery. So there are mainly four types of solar charge controller present which are:

MPPT Solar Charge Controller: The Maximum Power Point tracking charge is the evolutionary, expensive, and also sophisticated type of solar charge controller which is useful for pairing the batties and the solar panels with various voltages. This solar controller helps in streaming into the batteries by permitting a high amount of voltage into the wires which are attached to the solar panels.

This process helps in converting 10-30% more energy. It also restricted the backflow of the energy from the batteries to the solar panels during the solar energy supply and thus able to work maximum. The solar controller charger MPPT decreases the charge timing of the solar batteries. They are applicable in the high voltage panels to charge the low voltage batteries.

The pulse Width Modulation Regulators are similar to the series regulators but they are run by the transistor instead of the open solar array. This solar controller is manufactured to minimize the amount of current which is running in the battery, as it sets the maximum charge point. When the battery is charged full then the charge controller uses the trickle effect by using the small amount of the current to make the battery filled.

The solar energy provides the energy is constant, the PWM charge controllers are able to maintain the battery of the charge full. The use of the solar charge controller the voltage of the solar battery and solar panels must have the same voltage. A 12V battery required a 12V PWM charge controller. This solar charge controller is beneficial for smaller solar systems with low voltages.

As the transistors can be situated in either a positive or negative line, the series regulators can be utilized in both the positive and negative ground systems. The regulators permit the flow of the current from the battery until it disconnects the voltage which is reached at the time when the solar array is detached and restricted further current to flow to the battery.

Comparison MPPT Vs PWM Solar Charge Controller

The charge controller is the device that helps in balancing the charge which is generated from the solar panels. The main benefit of it is to maintain the solar charge controller voltage setting and the current and then send them to the batteries. This also helps in overcharging or over-discharge of the batteries and this process helps in protecting the systems. So before installing a solar charge controller you must know the basic difference between the MPPT and PWM charge controller.

According To The Temperature: The MPPT controller works efficiently in colder situations. As the solar modules work when the temperature goes down then the voltage increases. The MPPT controller is able to extract the excess module voltage to charge the battery. the MPPT controller can able to produce upto 20-25% more charges in cold conditions.
Whereas the PWM is able to extra excess voltage as the plus width the modulization of the technology chargers at same amount voltage with the battery. When the solar panels are positioned in warm weather the voltage decreases and thus the peak power points work at the voltage which is closer to the voltage of the 12 V battery.

Types Of The Solar Module: The off-grid models are 36- cell modules that are comfortable for both the PWM and MPPT. But there are some grid-time modules present which is not traditional 36 cells that are used for the off-grid systems.

Cost: The MPPT controllers are more expensive than the PWM controllers and also they are able to generate more power than the PWM controller.

Solar Charge Controller Price In China

The minimum pricing of the solar charge controllers is $ 6.5/Piece whereas the maximum price is $65/Piece and this pricing mainly depend on the rating, technology, types, and brand. The pricing of the solar charge controller are listed below:

Solar Charge Controller Models	Price
6 amps, 12-volt Charge controller	$ 8.5
10 amps, 12-24 volt Charge controller	$ 15
20 amps, 12-24 volt Charge controller	$ 20
30 amps, 12-volt Charge controller	$ 21
30 amps, 24-volt Charge controller	$ 23
50 amps, 48-volt Charge controller	$ 110
50 amps, 96-volt Charge controller	$ 160
50 amps, 120-volt Charge controller	$ 200
60 amps, 12-volt Charge controller	$ 30
60 amps, 24-volt Charge controller	$ 35

Which Solar Charger Is Best In China Market?

MTTP charge controller has power has a power efficiency of 96% whereas PWM has a power efficiency of 70%. So the MPPT is better than the PWM charge controller. The MPPT charges fast than the PWM solar controller and also PWM is less effective than MPPT. Both of them have positive and negative parts but if you say to me which one should I choose then I will suggest that MPPT solar charge controller is the best solar charger for these two and also it charges the battery by minimizing the wastage. Ouyadsolar is solar charger suppliers in china.

Buyers Guide To Choose The Best Solar Charger Controller

If you want to install the solar charge controller then you should buy the right solar charge controller. This device is mainly used for controlling and balancing the energy which is generated from the solar panels and then it is stored in the batteries. As it is a very crucial part of the solar system then here are the tips that you should consider to buy the best solar charge controller in China.

Energy Usage: If you need the solar charge controller to run your whole solar applications like solar lighting, solar AC, solar water heaters, solar pumps, etc. Then MPPT solar charge controller is perfect for you. This controller is able to run comfortably in the higher current and also can work effectively. They also come up with future plans which include more solar panels. On the other hand, if you need solar panels to charge the devices or light a few rooms then PWM solar charge controller is perfect for you.
Budget: If you are looking for an expensive charge controller then you can go for the MPPT charge controller and for a less expensive charge controller you can go for a PWM charge controller. The price of the charge controller depends on the features, technologies, etc.
Storage Temperature: The temperature is affected by the charge controllers. The PWM employ best in the warm weather as they are run by the battery voltage on the other hand the MPPT employ best in the cold weather and when the battery becomes low as they can operate the battery voltage.
Ease Of Installation: On the basis of the size and style of the solar charge controller the ease of installation depends. The MPPT controller may take a huge time to install rather than PWM due to their complicity. With the modern feature of MPPT, you need an expert for installing it at your home.
Manufacturer’s Warranty: Make sure to look at the warranty of the solar charge controller before purchasing it. It is great to choose the solar controller which has a warranty period of 1 or more years. During buying have a look at the terms and conditions, governing the warranty to avoid violating them.
Safety: If you think that the solar charge controller is not life-threatening then you are absolutely wrong. There have been a few accidents occurs in the past resulting from solar power. To avoid that have a proper precaution before purchasing one or you can also seek help from professional services.

Why Do We Need Solar Panel Charge Controller?

A question may arise why should we install the solar panel charge controller? As we all know that solar panels can generate DC energy and also your battery can able to work with this energy. So first you have to know details about them.

The solar batteries are made up of Lithium-Ion, Lithium Iron Phosphate, Nickel Metal Hydride, or Nickel Cadmium and they always need the charge controller to charge them safely. Lead-acid batteries are the exception in this case. If you are planning to use the solar systems to decrease the current maintenance charging, it can be done b the solar charge controller if the solar panels’ output is< 1% of the battery capacity. The solar chargers mainly use three-stage algorithms which slowly dries out the battery when it is charged fully. This happens because the solar panels start generating the power at first it will be at stage one then swift to at stage two when the battery voltage increases indicating a close full charge. At the stage 2 position, the solar charger will top off the solar battery and then maintain the cells by extracting the voltage upto 14.3 to 14.6V within a few hours. After this process then it moves to stage three which helps in floating the voltage maintenance charge at 13.4 V with the spark of the current. This process forms a high voltage cells balance which occurs in stage two and this makes the battery dries out and decreases the shelf life of the battery. When the chargers are connected t the grid then only they work very well and then only it takes the battery through sage 2 and then grasp in stage 3. The charge controllers can easily be part of the solar systems and they also prevent the battery from damaging by overheating.

Conclusion On Best Solar Charge Controller

It is very confusing if you do not know much about the technology and you have to choose the perfect one for your systems. There are also lots of emerging solar companies present in India that offer you the best solar charge controller in India. If your PV system has a battery then you definitely need a solar charge controller to protect it, from, overcharging.

Keep in mind that your solar panels, battery, and solar energy play a crucial role in identifying the best charge controller for you. So before purchasing one has a brief knowledge about these solar charge controllers. Also, you have to choose which one to take either MPPT or PWM solar charge controller. As both are efficient in their own way but still MPPT is much more efficient than PWM. So choose wisely before buying one for your home.

I hope that through this article to will be able to find the perfect solar charge controller for your devices. If you still have any doubts about this do lets us know in the comment section below. I will glad to give a solution to them.

FAQ’S On Solar Smart Charge Controller:

1. What is a solar charge controller?
A solar charge controller is a device that is used to regulate the voltage and current in order to make sure that the solar panels are working efficiently.

2. What are the different types of solar charge controllers?
The different types of the Solar Charge controller are:

MPPT Solar Charge Controller
PWM Solar Charge Controller
Shunt Regulator
Series Regulator

3. Why Use Solar Charge Controllers?
The first reason to use solar charge controllers is that they are very efficient and can keep your batteries charged.
Secondly, it helps you to avoid overcharging the battery and potential damages caused by excessive charging.
Thirdly, if you’re using a solar panel system, the controller will help to prevent power loss due to shading or shadowing.

4. Which charge controller is better, MPPT or PWM?
MPPT controllers offer a lot more power than PWM controllers, which is great for applications that require higher amounts of energy.

5. Is the charge controller expensive?
Absolutely not the solar charge controller is not so expensive.

6. Can the charge controller really charge the battery efficiently?
Yes, the solar charge controller is really charge battery efficient.

7. Is it necessary to install a solar power charge controller along with a solar system?
Installing a solar power charge controller along with a solar system is necessary in order to avoid any damages that may be caused by overcharging the battery.

8. Does it necessary to install all types of solar systems?
No, it is not necessary to install solar charge controllers with all types of solar systems.

solar charger controller 80a — solar-charger-controller-80a

What is a solar charge controller?

A solar charge controller, also known as a solar regulator, is essentially a solar battery charger connected between the solar panels and battery. Its job is to regulate the battery charging process to ensure the battery is charged correctly, or more importantly, not over-charged. DC coupled solar charge controllers, have been around for decades and used in almost all small scale off-grid solar power systems.

Modern solar charge controllers have advanced features to ensure the battery system is charged precisely and efficiently, plus functions like DC load terminals for lighting. Generally, most smaller 12V-24V charge controllers up to 40A in size are used for caravans, RVs and camping, and have DC load output terminals built-in. While most larger, more advanced 60A+ MPPT solar charge controllers do not have load output terminals and are specifically designed for larger off-grid system with solar arrays and powerful off-grid inverters.

Solar charge controllers are rated according to the maximum input voltage (V) and maximum charge current (A). These two ratings determine how many solar panels can be attached as explained in detail below ‘Sizing a solar charge controller’.

Current Amp (A) rating = Maximum charging current.
Voltage (V) rating = Maximum voltage (Voc) of the solar panels.

A charge controller or charge regulator is basically a voltage and/or current regulator to keep batteries from overcharging. It regulates the voltage and current coming from the solar panels going to the battery. Most “12 volt” panels put out about 16 to 20 volts, so if there is no regulation the batteries will be damaged from overcharging. Most batteries need around 14 to 14.5 volts to get fully charged.

Which is better PWM or MPPT?

In the example above, a common 60 cell (24V) solar panel with an operating voltage of 32V (Vmp) is connected to a 12V battery bank using both a PWM and a MPPT charge controller. Using the PWM controller, the panel voltage must drop to match the battery voltage and so the power output is reduced dramatically. With an MPPT charge controller, the panel can operate at its maximum power point and in turn can generate much more power.

Battery Voltage VS Solar Charge Controller Voltage

Unlike battery inverters, most solar charge controllers can be used with a range of different battery voltages. For example, most smaller 10A to 60A charge controllers can be used to charge either a 12V or 24V battery, while most larger capacity or higher input voltage charge controllers are designed to be used on 24V or 48V battery systems.

The maximum solar array size which can be connected to the solar charge controller is generally limited by the battery voltage. As highlighted in the following diagram, using a higher 24V battery enables more solar power to be connected to a solar charge controller with a maximum charge rating of 20A.

Based on Ohm’s law and the power equation, higher battery voltages enable more solar panels to be connected. This is due to the simple formula – Power = Voltage x Current (P=V*I). For example 20A x 12.5V = 250W, while 20A x 25V = 500W. So using a 20A controller on a higher 24V volt battery, as opposed to a 12V battery, will allow double the size solar array to be connected.

20A MPPT with a 12V battery = 260W max Solar recommended
MPPT 20A with a 24V battery = 520W max Solar recommended
20A MPPT with a 48V battery = 1040W max Solar recommended

Can You Use a Solar Panel Without a Charge Controller?

Charge controllers are used to regulate the electric current added to or drawn from a battery. In essence, when solar panels generate electricity, the charge controller communicates between the batteries and solar panels in order to securely charge the battery.

A solar panel simply generates energy depending on the weather outside, which can cause its output to change several times per day. Plus, they cannot monitor the status of the battery it’s charging.

As a general rule, you can’t use a solar panel without a charge controller because it risks overvoltage, reverse current flow, and overcharging a battery. A charge controller regulates the solar panel’s output to properly charge and stop charging a battery.

Can you use solar panels without a charge controller?

It’s best practice to always use a charge controller with solar panels. Batteries need consistent regulated power to charge, of which solar panels cannot do themselves without a charge controller. However, there are a few instances where using charge controllers with solar panels isn’t necessary.

Do I always need a charge controller?

Not always, but usually. Generally, there is no need for a charge controller with the small maintenance, or trickle charge panels, such as the 1 to 5-watt panels. A rough rule is that if the panel puts out about 2 watts or less for each 50 battery amp-hours, then you don’t need one.

For example, a standard flooded golf car battery is around 210 amp-hours. So to keep up a series pair of them (12 volts) just for maintenance or storage, you would want a panel that is around 4.2 watts. The popular 5-watt panels are close enough, and will not need a controller. If you are maintaining AGM deep cycle batteries, such as the Concorde Sun Xtender then you can use a smaller 2 to 2-watt panel.

Why 12 Volt Panels are 17 Volts?

The obvious question then comes up – “why aren’t panels just made to put out 12 volts”. The reason is that if you do that, the panels will provide power only when cool, under perfect conditions, and full sun. This is not something you can count on in most places. The panels need to provide some extra voltage so that when the sun is low in the sky, or you have heavy haze, cloud cover, or high temperatures*, you still get some output from the panel. A fully charged “12-volt” battery is around 12.7 volts at rest (around 13.6 to 14.4 under charge), so the panel has to put out at least that much under worst-case conditions.

*Contrary to intuition, solar panels work best at cooler temperatures. Roughly, a panel rated at 100 watts at room temperature will be an 83 watt panel at 110 degrees.

The charge controller regulates this 16 to 20 volts output of the panel down to what the battery needs at the time. This voltage will vary from about 10.5 to 14.6, depending on the state of charge of the battery, the type of battery, in what mode the controller is in, and temperature. (see complete info on battery voltages in our battery section).

What happens when you use a standard controller?

Standard (that is, all but the MPPT types), will often work with high voltage panels if the maximum input voltage of the charge controller is not exceeded. However, you will lose a lot of power – from 20 to 60% of what your panel is rated at. Charge controls take the output of the panels and feed current to the battery until the battery is fully charged, usually around 13.6 to 14.4 volts. A panel can only put out so many amps, so while the voltage is reduced from say, 33 volts to 13.6 volts, the amps from the panel cannot go higher than the rated amps – so with a 175 watt panel rated at 23 volts/7.6 amps, you will only get 7.6 amps @ 12 volts or so into the battery. Ohms Law tells us that watts are volts x amps, so your 175-watt panel will only put about 90 watts into the battery.

What’s Charger Controller Types?

Charge controls come in all shapes, sizes, features, and price ranges. They range from the small 4.5 amp (Sunguard) control, up to the 60 to 80 amp MPPT programmable controllers with computer interface. Often, if currents over 60 amps are required, two or more 40 to 80 amp units are wired in parallel. The most common controls used for all battery based systems are in the 4 to 60 amp range, but some of the new MPPT controls such as the Outback Power FlexMax go up to 80 amps.

What is Equalization?

Equalization does somewhat what the name implies – it attempts to equalize – or make all cells in the battery or battery bank of exactly equal charge. Essentially it is a period of overcharge, usually in the 15 to 15.5 volt range. If you have some cells in the string lower than others, it will bring them all up to full capacity. In flooded batteries, it also serves the important function of stirring up the liquid in the batteries by causing gas bubbles. Of course, in an RV or boat, this does not usually do much for you unless you have been parked for months, as normal movement will accomplish the same thing. Also, in systems with small panels or oversized battery systems you may not get enough current to really do much bubbling. In many off-grid systems, batteries can also be equalized with a generator+charger.

What is PWM?

Quite a few charge controls have a “PWM” mode. PWM stands for Pulse Width Modulation. PWM is often used as one method of float charging. Instead of a steady output from the controller, it sends out a series of short charging pulses to the battery – a very rapid “on-off” switch. The controller constantly checks the state of the battery to determine how fast to send pulses, and how long (wide) the pulses will be. In a fully charged battery with no load, it may just “tick” every few seconds and send a short pulse to the battery. In a discharged battery, the pulses would be very long and almost continuous, or the controller may go into “full on” mode. The controller checks the state of charge on the battery between pulses and adjusts itself each time.

The downside to PWM is that it can also create interference in radios and TV’s due to the sharp pulses that it generates.

What is a Load, or "Low Voltage Disconnect" output?

Some controllers also have a “LOAD”, or LVD output, which can be used for smaller loads, such as small appliances and lights. The advantage is that the load terminals have a low voltage disconnect, so it will turn off whatever is connected to the load terminals and keep from running the battery down too far. The LOAD output is often used for small non-critical loads, such as lights. A few, such as the Schneider Electric C12, can also be used as a lighting controller, to turn lights on at dark, but the Morningstar SLC lighting controller is usually a better choice for that. Do not use the LOAD output to run any but very small inverters. Inverters can have very high surge currents and may blow the controller.

Most systems do not need the LVD function – it can drive only smaller loads. Depending on the rating of the controller, this may be from 6 to 60 amps. You cannot run any but the smallest inverter from the LOAD output. On some controllers, such as the Morningstar SS series, the load output can be used to drive a heavy duty relay for load control, gen start etc. The LOAD or LVD output is most often used in RV & remote systems, such as camera, monitor, and cell phone sites where the load is small and the site is unattended.

What are the "Sense" terminals on my controller?

Some charge controllers have a pair of “sense” terminals. Sense terminals carry very low current, around 1/10th of a milliamp at most, so there is no voltage drop. What it does is “look” at the battery voltage and compares it to what the controller is putting out. If there is a voltage drop between the charge controller and the battery, it will raise the controller output slightly to compensate.

These are only used when you have a long wire run between the controller and the battery. These wires carry no current, and can be pretty small – #20 to #16 AWG. We prefer to use #16 because it is not easily cut or squished accidentally. They attach to the SENSE terminals on the controller, and onto the same terminals as the two charging wires at the battery end.

What is a "Battery System Monitor"?

Battery system monitors, such as the Bogart Engineering TriMetric 2025A are not controllers. Instead, they monitor your battery system and give you a pretty good idea of your battery condition, and what you are using and generating. They keep track of the total amp-hours into and out of the batteries, and the battery state of charge, and other information. They can be very useful for medium to large systems for tracking exactly what your system is doing with various charging sources. They are somewhat overkill for small systems, but are kind of a fun toy if you want to see what every amp is doing :-). TriMetric’s new PentaMetric model also has a computer interface and many other features.

solar charger controller 30a

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solar charger controller 100w 96v

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