Deep Cycle Battery Solar: Better For Solar?

With the increase in the popularity of solar panels, there has been an increase in demand for solar batteries as well. The latter will simply store energy that is obtained by the solar panels. Once it is in the batteries, it can be discharged to the appliances that are connected in the battery.

One of the best things about batteries is that they provide on-demand solar energy, making sure that it will be able to produce electricity even if the sun is not out. In addition, it is also a good thing that it is portable, which means that you can bring it anywhere. Whether you are in the campsite or beach, solar batteries can provide the electricity that you will need.

When it comes to solar batteries, you will have various choices. Among others, one of the most popular would be deep cycle solar batteries. They have an extensive history of being used in the storage of alternative energy beyond solar.

It offers a wide array of benefits, but such will depend on the specific type of battery that will be chosen. Generally speaking, the following are the three types of deep cycle solar batteries and their respective benefits:

Flooded Batteries

This is the most common form of deep cycle batteries. One of its biggest benefits is that it is the most affordable from the three options. However, unlike the two other batteries, they are unsealed. This means that there is no need for proper ventilation in order to optimize their functionality.

Gelled Batteries

One of the best things about this type of deep cycle battery is that it is made with fumed silica. The latter makes it durable. There is also a viscous electrolyte, which is beneficial in terms of being able to prevent leakage.

AGM Batteries

Like in the case of gelled batteries, they are also gelled, which makes them low maintenance. Other benefits of using this type of deep cycle battery for solar panels is that they are lightweight, nonhazardous, can resist cold temperatures, and has low internal resistance.

Features of Deep Cycle Solar Batteries

The following are some of the key features of deep cycle batteries:


Generally speaking, deep cycle batteries have a lifespan of up to 15 years. However, it is impossible to generalize as there are different variables that can have an impact on its functional life. The specific brand of the deep cycle battery, for instance, will be indicative of how long it can be functional.

Other variables that can have an impact on its lifespan include maintenance, frequency of charging, temperature, and how often it is going to be deep cycled. Specific applications will also affects its functional life. For instance, those that are used for marine applications can last up to 6 years while those in golf carts can last for 7 years.

Amp Hours

Aside from lifespan, another important feature that should be considered when it comes to deep cycle batteries would be their amp hours, which is expressed as Ah. This would be a rating in reference to the amount of the energy that can be stored by the battery.

If the battery will be discharged at a period that is shorter than recommended, the capacity will also be reduced. Generally speaking, if the deep cycle batteries are used for solar applications, they should be at least 20 hour rate.

Cycle Rating

In order to differentiate one deep cycle battery from the other, another important factor that should be taken into account would be the cycle rating. Simply put, this would refer to the number of times that the battery can be charged and discharged. Deep cycle batteries should not be discharged up to 100%.

How To Use Them The Right Way

Deep cycle batteries can have long lifespan, but this will only be realized if they are used the right way. In order to make them functional for an extended period, the following are some of the things that should be done:

Store at Right Temperature

One of the things that you have to remember is to store the batteries in a place with the right temperature. At home, the basement is one of the best places. The temperature should be ideally between 40 to 55 degrees Fahrenheit.

The batteries will be able to last longer if they are kept in a cool environment. On the other hand, their capacity will be larger if the environment is warm.

Let the Batteries Cool after being Charged

Once you are finished charging the battery, make sure to give it more than enough time to cool down before being used. In the absence of letting it cool, grid corrosion can be accelerated and this is one thing that can lead into the failure of the batteries.

Use the Right Charger

Not all chargers can work in your deep cell battery. Sealed batteries have different chargers than wet batteries. If you do not use a charger that is specified for the battery, failure will most likely to happen and the lifespan can be shorter.

Provide Enough Space in Between Batteries

If you are using several batteries, it is important to have them positioned in such a way that there is sufficient space in between. This will give room for possible expansion of the battery and will also make sure that there is enough ventilation, especially in the case of flooded deep cell batteries where there is a need to be well-ventilated.

Pay Attention to Instructions from the Manufacturer

Not all deep cycle solar batteries are the same. They all require special care depending on their specific type. With this, always refer to the instructions provided by the manufacturer and make sure that it is followed.


In sum, deep cycle batteries will indeed prove to be excellent choice when it comes to solar panel battery banks. They come in three different kinds, each with its respective benefits.

Generally speaking, however, they will make an excellent pick for energy storage. With these batteries, you will be able to enjoy portable source of power anytime and anywhere.

Find more type of best batteries for solar system

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