Solar storage batteries are a component of home solar systems, allowing homeowners to capture surplus energy generated during the day for use during the evening or low-sun days. As with any other worthwhile investment, it's important to understand how long solar storage batteries last in an effort to make informed decisions about their installation and maintenance.
Solar storage batteries typically last for 5 to 15 years, depending on the battery type, brand, and conditions under which they are utilized. Solar systems most often use lithium-ion batteries, which are more robust and longer lasting compared to past technologies like lead-acid batteries.
DoD refers to the portion of the capacity of the battery being utilized prior to recharging. Batteries that are deep discharged will die off sooner. Theoretically, maintaining DoD at the 50% mark can serve to prolong battery lifespan.
Severe heat or cold can shorten the life of solar storage batteries. Installing batteries in a dry, cool location will cause them to last longer.
Each time a battery is drained and then recharged, it cycles. The more charge cycles a battery goes through, the shorter the battery's lifespan. Good batteries are designed to go through more charge cycles, but performance will eventually suffer.
To maximize the life extension of your solar storage battery, regular maintenance is necessary:
Most solar storage batteries come with warranties of between 5 and 10 years, depending on the manufacturer. A warranty can be a source of comfort by guaranteeing that the battery will perform well for a specified period or will be replaced if it fails before that.
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