The types of Solar Chargers

Solar Panel Texas

The types of Solar Chargers

Solar charge controllers are an essential component for any solar system that is off grid. The charge controller functions as a gateway for your battery and helps to prevent overcharging and damaging your battery’s energy storage device. This article will explain what a solar charger is and also compare the two primary kinds, Pulse width Modulation (PWM), and maximum power point monitoring (MPPT).

What is a solar charger's controller?

The solar charge controller regulates your solar battery to prevent it from charging too much. The voltage capacity of batteries is the purpose they were designed to be used for. In excess charging can cause irreparable harm to the battery and eventually loss of functionality. The solar charge controllers act as the gateway to your battery’s storage to ensure that it isn’t overwhelmed.

A small percentage of cases will require charge controllers. If you’re considering installing an unconnected solar panel charging controllers are an ideal choice. This includes rooftop systems, as well as smaller installations on RVs and boats. A charge controller isn’t needed if you’re homeowner looking to install solar panels with batteries that are connected to an electrical grid. After your battery has been fully charged, any excess energy will be sent to the grid. This will prevent you from charging your battery too high.

We’ve put together an extensive list of the best solar-powered portables for 2022 that will help you choose the right one. This includes solar charge controllers to simplify the use of.

Are solar charge controllers right for me?

Most solar buyers don’t need charge controllers. Ground-mount and roof-mounted solar panels that have a backup battery are typically hooked up to grid. If your battery is fully charged, the excess solar energy will be rerouted to it.

The charge controller will be essential to ensure that your battery is charged safely should you be interested in solar energy systems that are off grid. A PWM solar charge controller is ideal for batteries with small capacities which are connected to low output five to 10 Watt (W) solar panels. A charge controller with MPPT is a good choice for more intricate DIY solar projects that need higher output panels.

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Different kinds of controllers for solar power

There are two types to choose from if you need solar power completely off grid. MPPT and PWM controllers.

Pulse Width Modulation solar charge controllers

The most commonly used type of solar charge controller used by solar buyers is the PWM solar charge controller. These controllers are generally more simple than MPPT controllers, and are less costly. PWM controllers reduce the amount of power your battery consumes when it is nearing its capacity. PWM controllers keep your battery full by maintaining a condition called “trickle”. They provide only a tiny amount of power in order to keep the battery’s capacity.

Your{ home battery and|| home’s battery and} solar panel must have the same voltages when using a PWM controller. The voltages of your panel and batteries in larger solar panel and systems which power the entire home aren’t always identical. PWM controllers work best when it comes to DIY solar systems that include several low-voltage panels as well as an insignificant battery.

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Maximum Power Point Tracking solar charger controllers

It is also more complex and expensive. They provide similar protection to a PWM controller and will decrease the power flowing to the battery once it is at capacity.

MPPT chargers can make voltages match that are not compatible in contrast to PWM controllers. MPPT controllers have the ability to alter their input to draw the highest power to track the solar panel. They can also adjust their output power to match the batteries that are attached. MPPT charge controllers consume greater power than controllers that use PWM and can charge your home battery more efficiently.

The MPPT controller can be your best choice if performance was your primary concern when buying a controller. This isn’t always the case. The selection of the top solar charger controller is more than just efficiency.

What type of solar charger controller do you need?

These questions can assist you in deciding the controller that is right for you:

What kind of panels do you have?

Off-grid panels are comprised of 36-cell panels which can charge a 12V battery. They can be utilized with PWM controllers. These panels with 60 or 72-cell{ in size|| in capacity} and can be used in conjunction using grid-tied solar panel. They also come with a higher voltage for the battery and will need an MPPT control.

What size is your system?

A PWM controller can be utilized in any system, as long as the voltage of your battery between the solar system and your home battery is in line. While they’re not compatible in larger systems however, they are compatible with smaller systems. PWM controller is suitable for smaller ones. MPPT controllers won’t work well if your array is less than 170W.

What temperatures can you to expect?

When it gets cooler, MPPT controllers function better than PWM controllers. An MPPT controller can detect excess voltage when temperatures fall. An MPPT controller isn’t necessary in warm regions, where temperatures don’t fall very often.

What is the budget you've got to invest in a controller?

Since MPPT controllers possess a greater charging efficiency, they are generally more expensive than PWM models. The MPPT controller offers greater charging efficiency of up to 20%. This is because it uses a four-stage charging system that can be more effective and beneficial for the life of your battery. While PWM solar chargers are more flexible and simple to set up, they typically offer lower efficiency.

Buy an solar charger controller

It’s difficult to select the best brand once you’ve decided the kind of solar charger you need. To help you get started we’ve provided a list of the most popular companies and products.


Renogy produces DIY-friendly items which can be used in all kinds of off-grid projects. They provide a wide range of items, including inverters batteries, and solar panels. The charge controllers in their collection are great for small projects that only require a PWM control or larger projects that require an MPPT charger. You can pick from various sizes to fit your needs.


BougeRV is a great resource for RV owners as well as anyone who is looking for alternative power sources that are off grid. Their MPPT and PWM chargers are both highly rated and offer compatibility options and sizes that will fit into your system. BougeRV also has additional outdoor appliances and power solutions. This is a great alternative if you are worried regarding compatibility with your system.

Victron Energy

Victron Energy provides a variety of off-grid energy storage and supply solutions. Victron Energy has been in business for over 45 years and is constantly making new products to meet evolving demands from consumers. It is possible to select from a range of sizes and prices to fit your needs, including an MPPT charger.

Are you always in need of a Solar charger?

As stated above, a solar battery keeper is required to shield the battery from discharges and overcharges that are frequent. This will drastically decrease the life span of the battery.

This is particularly applicable to sealed batteries, in which the charge controller{ really|| truly} is essential.

A sealed battery can be damaged, or even dangerous.

If you own a low-power solar panel (less than 10Wp) along with a battery that has 100 amp-hours or more of capacity, then you don’t require an solar battery keeper.

It is quite certain that a low power panel cannot overcharge such a large capacity battery.

A battery with a large capacity on the other hand, guarantees that the battery will never fully filled.

This is only applicable only if your load has been connected with the configuration mentioned above – a 10W panel and a 100 Ah battery.

Practically, this setup could be put in place on a boat or the wheel of a recreational vehicle (RV) and it is highly likely to be turned off for a few weeks. Also, there is the chance of overcharging.

A solar regulator can be a great alternative when you own a boat or RV, or high-capacity banks you have to turn off for very long durations of time.

To begin saving money, you don’t need to build your own solar panel

Register your property on the Marketplace for Shneyder Solar to get a competitive quote for solar installations. You can indicate your desire to explore storage solutions that work with your panels in your profile. Installers can view your request. It is smart to connect your solar project to a grid, even with battery backup. This gives you a backup, and you won’t need to be able to power down.

While going completely off grid may be feasible in some instances but it’s not financially prudent to employ a professional installer to help with your solar project. Professional solar installers will make sure that your system is functional and efficient. You won’t get the same warranties and protections from an installer that you do in a DIY-based project. To find out how much solar could save you, use the Solar Calculator to get an instant estimate, based on the size of the property you live in.


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