Solar Battery Storage: How Long It Lasts, Lifespan Factors, and
The average lifespan of solar batteries typically ranges from 5 to 15 years, depending on various factors such as battery type and usage conditions. Lithium-ion batteries,
Batteries operate reliably with gradual, predictable capacity degradation. Wear-Out Period (10+ years): As batteries approach their design life, failure rates increase due to accumulated wear and chemical breakdown. Multiple environmental and operational factors significantly impact how long your solar battery will last.
In fact, with solar panels increasingly lasting for 30 or even 40 years, you may end up buying more than one replacement battery. Maintaining and monitoring your battery is the most important action you can take for your battery, since it's the only way you can quickly discover when and if there's a problem, and get the issue fixed straight away.
Lead-acid batteries (flooded or sealed): These are the most traditional type and also the shortest-lived, typically lasting 3 to 7 years. They're more affordable upfront but require regular maintenance and don't hold up as well over time. When people talk about battery lifespan, they're often referring to “cycle life.”
The best batteries can usually go through roughly 6,000 cycles in total, and most homes will typically cycle through their battery around once per day. If you're not sure whether to add a battery to your solar panel system, check out our guide to whether solar batteries are worth it.
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