How To Choose The Best Battery For A Solar Panel System?

solar power

How To Choose The Best Battery For A Solar Panel System?

The pace at which technology is advancing is truly exceptional. Thanks to modern research and scientific enlightenment, new-age homeowners can now benefit from solar energy and decrease the carbon footprint of their houses. How? By installing solar panel systems that channel energy from the natural sunlight and provide homes, buildings, and commercial industries with inexpensive electricity.

However, certain specifications are vital for efficient energy conservation solutions, such as solar panels. One of them is the use of superior quality solar power battery systems. If you are mindful about this single aspect at the time of purchasing and installing this futuristic technology, your home will not only enjoy an unlimited supply of energy but will also last longer.

Therefore, before you start your hunt to get your home a solar system, educate yourself about the following criteria, which will help you choose the right battery to run it efficiently.

1. Power and capacity of the solar battery

Capacity is defined as the amount of electricity that can be stored in a solar battery. It is measured in kilowatt-hours (kWh). Mostly, home solar batteries can be stacked, which means that you can combine multiple batteries in order to make use of extra capacity.

However, capacity can only tell you how sizable your battery is. To find out how much electricity your solar system can provide you with, you have to gauge its power rating. In simple words, the power rating of a battery is the amount of electricity it can provide in kilowatts (kW).

At the time when you are buying a solar battery, choose the one with a lower capacity and a high power rating. This combination can run your entire house for a few hours. On the contrary, a battery with a high capacity and low power rating can only fuel a few crucial appliances for a long time.

2. DoD – Depth of discharge of the solar battery

Generally, most people end up draining their solar batteries entirely until they die down completely. It is significant to understand that, just like any other electrical appliance, these batteries need to retain some charge at all times. If you end up utilizing 100% of your solar battery’s charge – its lifetime will shorten significantly.

Therefore, you must always ask the manufacturer about the depth of discharge (DoD) before buying a solar battery. It refers to the amount of capacity that has been used already. Usually, a higher DoD means you will be able to use more of your battery’s capacity if you compare it to others that offer a lower DoD.

3. Round-trip efficiency of the solar battery

A battery’s round-trip efficiency matters a lot when you have to analyze the reliability of the solar system and how long it will be by your side. It is the ratio of the amount of energy that you charge the battery with and how much it produces in return. For example, if you give five kWh of charge to your solar battery and it produces 4 kWh of electricity, the round-trip efficiency of the battery is 80%. In order to get more economic value out of your solar system, install a battery that comes with a higher round-trip efficiency.

4. Battery life

Just like any other battery, a solar one also possesses a set of cycles. What this means is that they charge and drain daily. As time passes and the usage increases, a battery’s capability to hold charge will decrease. An example of this is your mobile phone. You charge it daily at night so you can use it during the day. However, when it starts getting older, you will notice that your battery drains out with a speed that was not there before. In the same way, the battery life of your solar system will most probably reduce by the end of its warranty. Therefore, you should always inquire about how much longevity your solar battery can offer.

5. Warranty

When you buy a solar battery, it will always come with a warranty. It will specify a certain number of cycles, which determine the years of useful life. Naturally, a battery’s performance is bound to decrease with time, which is why the manufacturer will give you an estimated amount of capacity that the solar system will provide by the end of its lifetime. This estimation majorly depends on the brand of battery that you buy, and ultimately, how much capacity will the system lose over time.

What are the best batteries for solar systems?

Now that you know about the different important aspects of a solar battery, here is a list of the best ones that are ideal for an efficient energy-saving solar panel.

  1. Lead-acid.
  2. Lithium-ion.
  3. Saltwater.

The next time you are installing a solar system for your home, office, or factory, keep everything that you read here in your mind.

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