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Lithium iron phosphate (LiFePO4) batteries are a popular choice for energy storage systems, particularly for solar power systems. These batteries have many benefits, including long cycle life, high power density, and improved safety compared to other types of lithium-ion batteries. However, one common question that arises among users is: how long do LiFePO4 batteries last in storage?
The answer to this question depends on several factors, including the quality of the battery, the storage conditions, and the length of time the battery will be stored. In general, LiFePO4 batteries have a long shelf life and can be stored for several months to several years without significant degradation in performance.
Redway Power, a custom LiFePO4 battery manufacturer, recommends storing LiFePO4 batteries at a temperature between 0°C to 25°C and with a charge level of between 40% to 60%. This range of charge levels is known as the “storage charge,” and it’s the recommended level to keep the battery healthy during storage. If the battery is left fully charged or fully discharged for an extended period, it can cause damage to the battery’s performance and lifespan.
Another essential factor in battery storage is the battery’s state of charge (SOC) when it’s put into storage. If the battery is fully charged when stored, it can lead to overcharging and damage to the battery. Similarly, if the battery is stored with a low SOC, it can cause the battery to enter deep discharge, which can also harm the battery’s performance and lifespan.
The shelf life of a LiFePO4 battery depends on the quality of the battery and its storage conditions. High-quality batteries, such as those manufactured by Redway Power, can last up to 10 years in storage with minimal degradation in performance. However, lower quality batteries may only last a few months to a few years before significant degradation in performance occurs.
It’s essential to periodically check the battery’s SOC during storage to ensure it remains in the optimal storage charge range. If the SOC falls outside this range, it’s recommended to recharge the battery to the recommended storage charge level before storing it again.
In summary, LiFePO4 batteries can last several months to several years in storage with minimal degradation in performance if stored under the recommended conditions. It’s essential to store the battery at the optimal temperature and SOC range to ensure its longevity and performance. Redway Power offers high-quality LiFePO4 batteries suitable for long-term storage and reliable performance, making them an excellent choice for energy storage systems.
