How Long Do Solar Batteries Last?

solar repair san diego

Solar batteries are one of the most useful scientific advancements in recent history. They enable you to store any excess energy your solar system generates during the day, allowing you to avoid high energy rates during peak hours and stay unaffected by the frequent power outages in Southern California. 

More and more homeowners across the area are considering adding a battery system to their solar panels. Since this is no small investment, many of them wonder how long a solar battery will last before having to be replaced. 

In order to put your mind at ease and help you make the right decision for your home, the best solar repair professionals in San Diego are here to tell you all you need to know about solar batteries. Keep on reading. 

How long can a solar battery hold a charge?

Modern batteries are designed to enable you to rely on the energy produced by your solar system even when the sun is down and your panels are unable to generate any more electricity. But how long will the charge of your battery last exactly? 

Well, the exact charge hours of your battery will depend on several factors, including the size, model, capacity, and type of your chosen battery. Additionally, the total capacity of the battery will also influence how long the charge will last. In general, a battery charge can last anywhere from 1 to 5 days depending on its type. 

Do solar batteries go bad?

How long can a solar battery hold a chargeA typical solar battery has a lifespan of between 5 and 20 years, although many manufacturers promise a 30-year lifespan for their battery units, matching the lifespan of most modern solar systems. Regardless of the battery you choose, there are several different factors that may affect the battery life. These include: 

Charging times 

In order to maximize the potential of your solar battery, you should charge it according to the specifications pertinent to its type, size, and model. Make sure to carefully read the instructions before using the battery to figure out the correct charging times. 


Proper maintenance is crucial for ensuring the longevity of your battery. If you wish to avoid expensive repairs, you should follow the manufacturer’s instructions and consider hiring a professional maintenance service for your solar system. 

Temperature Do solar batteries go bad

Your location can also influence the efficiency and lifespan of your solar battery. For instance, if you live in an area with moderate or mild temperatures, you could have your battery installed outdoors and achieve great results. On the other hand, if you live in a region with extreme temperatures, your battery will perform best when installed in the basement or garage. 

Usage cycles 

The usage cycles of your chosen battery also play a significant role in ensuring good life expectancy. Fortunately, most modern solar batteries are deep-cycle batteries, meaning that they can discharge as much as 80% of the stored energy before having to be recharged. 

Count on the leading experts for solar repair in San Diego 

If you’ve decided to improve upon your solar system by adding cutting edge battery storage, don’t hesitate to reach out to Action Solar of San Diego. Our seasoned technicians can help you decide on the best battery type for your home as well as maintain your solar system, maximizing its lifespan and efficiency. 

The Action Solar team will use tried-and-tested equipment to install your new solar panels and storage system, enabling you to avoid high utility rates and reduce your carbon footprint. We are at your beck and call across Southern California and San Diego County, so don’t hesitate to contact us no matter where you are located in the area. Reach out to us today!