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Solar Deep Cycle Battery Charger and –Introduction, Size and Controller

APR 06, 2021   Pageview:52

Charging is the process through which a user uses their battery charger to return power to a drained power battery. Most of the solar batteries Chargers work by giving your battery power until you have enough power to start your car. Over the last few years solar energy has been receiving a lot of attention from big companies and governments. Everyone is in a race to help curb climate change by the use of clean energy. This is why solar deep cycle batteries are important. 

It is important to note that your charger's size is dependent on the power your battery can handle and that which the solar panel can release. Any device using solar panel power needs a controller, a device used to regulate the power amount going into any battery. The controller also prevents charge from flowing back from your deep cycle battery to the solar pane. Let us look at how the solar powered battery charger works, the size required and the controller. 

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Solar Powered Deep Cycle Battery Charger

A deep cycle battery is a type of battery designed to get charged and discharged often and do not get damaged easily. Most of these batteries are bigger and used to big power engines like vehicles and trucks, among others. 

A deep cycle battery can be charged from an external electrical source or a solar panel through a solar charge controller. The solar charge controller normally ensures that the deep cycle batteries are charged to their full capacity without being overcharged.

A solar-powered deep cycle battery charger can charge the AC into DC hence providing power to your deep cycle battery charger. This solar charger has three major functions: providing charge into the deep cycle battery, regulating the amount of charge, and stopping when the battery is in full charge.

Any 12 V solar panel can damage your deep cycle battery, and for that, you need a solar charge controller to regulate the amount of power going to your battery. To always know the type of battery charger you need, you should know the power that your battery holds and that which you're solar panel releases. This will always help you get a charger that will not overheat or undercharge your batteries.

Note that you can always use an inverter/charger or a solar charge controller to ensure your deep cycle battery is fully charged.

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What Size Solar Charger for Deep cycle Battery

A solar charger can be defined as a device that uses natural sunlight to charge devices. The solar chargers work by absorbing sunlight in them, and then it is generated to electricity which is used to power or charge deep cycle batteries and other devices.

Many solar chargers are designed for VDC, while the 24 V panel is limited on availability. When your deep cycle batteries need 24V and more, you may need to have more solar panels connected in series to get your batteries fully charged.

There are various things you need to find out as you find the size of your solar charger. First, you need to know the amount of power your deep cycle battery requires and the amount your solar panel can give. This will help you understand the size of a charger that can hold that power and transfer it to your battery.

Most of the solar battery sizes depend on the size of the device being charged. For example, a laptop or a mobile phone may need a smaller solar charger, while a deep cycle battery may require a bigger solar charger. Three voltages can be released from a solar panel, and for that, each respective charger should have the capacity to handle such power. These voltages are 12v, 24v and 48 v respectively.

For example, if you have a battery that requires 12 volts and you have 14 amps already, that means you require a charger that can handle 14 amps of power. This should tell you that your solar charger is dependent on the power from your solar panel and that which your battery can consume


Solar Charge Controller

A solar charge controller is a device used to manage the amount of power supplied to the power bank from the solar array. This device makes sure the deep cycle batteries are in good condition by preventing them from overheating. It also ensures the power attained does not drain from the batteries or get reversed to the solar panel.

Most solar charge controllers have other uses, but the management of power is their primary role. They are also used for controlling load and lighting. The solar charge controller is made of two technologies that are MPPT (Maximum Power Point Tracking) or PWM (Pulse Width Modulation). The two technologies are different from each other, especially in how they perform. One of the differences is that PWM is cheaper than the MPPT. The choice of the buyer will depend on how much money they have.

The PWM works when they are directly connected from the solar array to the battery bank. MPPT, on the other hand, is used by converting the power voltage to the battery voltage. Both MPPT and PWM have some key features that help them perform their functions. These features include; the low voltage disconnect, control lighting, multistage charging of battery bank, and the low voltage disconnect.


Solar energy is affordable and can easily be used on your deep cycle batteries through a solar battery charger or inverter and a solar charge controller. A solar charge controller also enables its users to use power later that power is stored for later use instead of sunlight's direct power.

The deep cycle batteries do not have a specific charging time because it is dependent on the amps hours stored by the battery. This means that to get a solar charger for your deep cycle battery, you also need to comprehend the amps your charger can handle. With your battery and charger's amps, you can also determine the time it will take your battery to charge fully.


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