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Solar Charger Controller


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SOLAR CHARGER

Using Solar Powered Battery Chargers to Power Your Electronic Devices

 
 

Solar energy works through a solar cell which absorbs the sun’s rays and transforms them into energy, which is then transferred to a battery where it is stored until it’s needed. Solar lights and other products work in this exact same way, so it’s no wonder that solar battery chargers are now available on the market.

You can use a solar charger to charge any normal rechargeable battery such as AA, AAA, D, and C batteries, as well as 9 volt batteries. These types of solar chargers have been available for quite a while, and are just the tip of the iceberg. Today you can purchase a charger which runs solely on solar energy for your cell phone, mp3 player, digital camera, Deep cycle batteries, gel batteries, carbon batteries and other electronic devices.

 

 

Solar Charger Controller

A solar charge controller (or regulator, as they are sometimes known) is an essential part of every solar charging kit. The main role of a controller is to protect and automate the charging of the battery. It does this in several ways:

1. REDUCING THE VOLTAGE OF YOUR SOLAR PANEL

  • Without a controller between a solar panel and a battery, the panel would overcharge the battery by generating too much voltage for the battery to process, seriously damaging the battery.
  • Overcharging a battery could result in the battery exploding!

2. MONITORING THE VOLTAGE OF YOUR BATTERY

  • The controller detects when the battery’s voltage is too low. When the battery drops below a certain level of voltage, the controller disconnects the load from the battery in order to prevent the battery from being drained.
  • A completely drained battery will lose some of its overall capacity.
  • Low voltage can still damage the battery if the load is connected.

3. STOPPING REVERSE CURRENT AT NIGHT

  • The controller stops any current from flowing back into the solar panel at night.
  • This prevents any damage to your solar charging kit.

The solar panel connects to the controller through positive and negative leads, only creating a charging function when the controller is connected to a battery. The load is then responsible for the discharging function from the controller (if it is connected to the controller).

 

There are many different types of controllers that The Real Summit Cable Network can provide and install for you. Choosing the right controller depends on the solar power system you would like to generate.

PWM controllers

A brilliant little device that boasts compatibility, simplicity, and a utilitarian understanding of solar panels, batteries, and loads: it is included in most of our small and medium sized kits.

As it uses PWM technology, the amount of current and voltage that is lost between the panel and the battery is reduced to next to nothing. It can prolong battery life and also protect it from overcharging, undercharging, short circuiting, and overheating.

This charge controller does not have to be used solely on one panel and one battery; a 10A PWM controller cab be used to regulate the charge of an array of solar panels connected in parallel with a total power of 160W. If you were to get a 20A PWM controller, you would be able to regulate a solar panel bank of up to 320W for 12V batteries, and 640W for 24V batteries.The PWM controller can also be used to connect solar panels to a battery bank of 12V batteries, provided that the batteries are the same size and that they are in good condition. The 10A controller is also conveniently compact, at only 14 x 7 cm.

 

Controllers with LCD displays

The programmable features allow the user to customize the charging process by setting the battery type and the capacity, choosing charging voltages at each stage, setting protection parameters, and by switching the load on and off by timer.

These controllers put the power in the owner’s hands, and makes a solar circuit much more advanced and controllable. An LCD display gives you information about many things, including:

-the solar panel current/voltage,the battery current/voltage

-the state of charge of the battery

-the temperature

-current charging stage

 

Dual battery controllers

This can be used to monitor and regulate two independent (electrically isolated) batteries at the same time. 

It is an essential item for anyone looking to charge both their leisure battery and their engine battery, or anyone who wants to charge a bank of several 12V leisure batteries and a starter battery at the same time.

The user has two charging options: to charge both of the connected batteries at an equal rate, or to give one battery charging priority (e.g. 80% of power to go to the engine battery and 20% to the leisure battery). A remote display can be equipped to this controller so that the user has more control over the regulation between the two batteries. Despite being called a “dual battery controller”, it can also be used to charge one battery - a second battery can be added later.

 

Waterproof controllers

These controllers are specifically designed for wet environments. 

In terms of functionality, they are almost completely identical to the standard 10A PWM controller. It has multiple settings for timer-controlled load work, which is ideal for street lighting and perfect for anyone who wants to set up a solar charging kit on their boat.

 

MPPT controllers

Along with PWM, there is one other method of solar charge regulation that is considered the most efficient method: MPPT (Maximum Power Point Tracking).

MPPT controllers are the most efficient and powerful controllers that we, Real Summit Cable Network Provider offer, but they should only be used when the solar panel voltage is much higher than the battery voltage. An MPPT system is able to lower the voltage of a panel (or an array of solar panels) that is up to ten times higher than the voltage of a battery to match the voltage of the battery without losing any of the current in the process. The MPPT controller works at a higher efficiency rate than the PWM controller; while a PWM controller operates at an efficiency level of 75%-80%, an MPPT controller operates at an efficiency rating of 92-95%.

MPPT controllers also boost the amount of current going to the battery, which can vary in amount depending on the weather, the temperature, the battery state of charge, and other factors. There would be no negative repercussions from using a MPPT controller on a solar panel with a voltage close to the battery voltage, but the benefits from MPPT in this sort of system would be much lower.

It has the same protective features as the PWM controllers. We include a 20A MPPT controller in our 200W/250W kits, due to the fact that an MPPT controller allows the panel to operate at the maximum level that it can. Some have built-in LCD displays, while others have RJ45 sockets for a remote meter that allow you to monitor the charging process.

Real Summit could offer you any of these packages.

 

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