When it comes to home energy storage systems, lithium-ion batteries are the gold standard because they're lighter, more compact, and have a longer lifespan and higher DoD than lead-acid batteries. The opposite of charging, a battery’s DoD reflects the amount of power the battery is able to discharge relative to its full kilowatt-hours (kWh) capacity. Lead-acid batteries have been used in off-grid energy systems for decades, and while they’re one of the least expensive options on the market, lead-acid batteries have a shorter lifespan, and lower depth of discharge (DoD) compared to lithium-ion batteries. Of the three types, lithium-ion batteries (also known as li-ion batteries) are the most common sources of energy storage for a home solar system. If you’re asking, “ What are the best batteries for solar power?” then you need to know that solar power batteries are made with one of three different chemical compositions: lead acid, lithium ion, or saltwater. Here’s a simple list:ĥ Factors That Affect Home Solar Battery Life 3Ĭertain factors may prolong your solar battery’s life. If you decide to install a solar battery today, it’s almost certain you’ll need a replacement in the future to match the 20- to 30-year lifespan of your solar power system. Home solar battery units last anywhere between 5 and 15 years. That’s why we’re answering common questions about the life expectancy of a solar battery to help you understand the benefits of switching to renewable energy. We understand that solar storage is a significant, long-term investment in your home. 2 Learn more about solar battery storage. 1 Home energy storage lets you keep the excess electricity your solar panels produce during the day and use it when you need it most, such as back-up power during a power outage, at night, or when utility rates are the highest. Learn the Factors That Impact the Life of a Home Battery UnitĪccording to recent data, 7 out of 10 solar panel shoppers express interest in adding a battery to their solar systems.
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