Solar Battery Lifespan: Things You Should Know

Author: Polinovel    |    June 8, 2022
Solar Battery


Solar energy systems with battery storage can supply power regardless of the weather or the time of day.

Do solar batteries have the same lifespan as solar panels? How long will these batteries last? What factors will affect the lifespan of these batteries? These are questions that you may consider. Don’t worry. You can find out the answers in this article.

Part 1. What is a Solar Battery?

The solar battery is an energy storage solution that can be used with solar energy systems to store energy. It can help to power our electric equipment 24/7, making our lives more convenient.

Part 2. How Many Years Will a Solar Battery Last?

The lifespan of a solar battery can be a wide range, which is between 5 and 15 years. There are several factors that affect the lifespan of the solar battery. Below is the list:

What Influence the Life Expectancy of a Solar Battery?

Battery Type

There are three main types of batteries used in solar energy systems, which are lead-acid batteries, lithium-ion batteries, and saltwater batteries.

Of these options, lithium-ion batteries will be the most cost-effective choice. They have lighter weight, faster charging time, higher depth of discharge, and a longer lifespan than lead-acid batteries.

Lead-acid batteries, on the other hand, have a lower depth of discharge and shorter cycle life. But their relatively low price makes them one of the main sources of solar energy systems.

Saltwater batteries, new technology in the market, use salt to store energy, making them environmentally friendly and safe to use. When it comes to lifespan, saltwater batteries will last shorter than lithium-ion batteries.

How Frequently You Use the Batteries

How often the battery is cycled is the key to how long it lasts. One cycle is when the battery is fully charged and discharged once. The more times a battery is cycled, the shorter its lifespan. That’s why the battery life varies so much. It’s based on how often you use them.


Environment plays a critical role in solar batteries’ performance. At higher temperatures, chemical reactions in the batteries will occur quickly, which can shorten the lifespan of the batteries. And at extremely cold temperatures, the chemicals don’t last as long as they normally would, which means the batteries will drain faster. So the batteries should be kept at an appropriate temperate to optimize their performance.


To ensure you make the best of your solar battery, you need to perform routine battery maintenance to keep it in good condition.


The life expectancy of solar batteries is determined by battery type, frequency of use, temperature, and maintenance. You should choose high-quality batteries manufactured by professional suppliers and use them with care. When it comes to reliable manufacturers, you can always trust Polinovel. Polinovel is dedicated to manufacturing safe and reliable solar storage batteries for people.

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