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how long do ups batteries last in storage

How Long Do UPS Batteries Last in Storage

When it comes to UPS (Uninterruptible Power Supply) batteries, one common question that often arises is, “How long do UPS batteries last in storage?” Proper storage of UPS batteries is important in order to maintain their optimal performance and extend their lifespan. In this article, we’ll discuss the factors that affect the longevity of UPS batteries in storage and provide some tips on how to ensure that they remain in good condition.

Factors Affecting UPS Battery Life

There are several factors that can impact the lifespan of UPS batteries when stored, including temperature, humidity, and the state of charge. High temperatures can cause the batteries to degrade more quickly, while extreme cold can reduce their capacity. Additionally, over time, the chemical reactions that occur within the batteries can lead to a natural loss of capacity, even when the batteries are not in use.

Length of Storage

The length of time that UPS batteries can be stored without experiencing significant degradation depends on several factors, including the type of battery, its age, and the storage conditions. Generally, sealed lead-acid (SLA) batteries, which are commonly used in UPS systems, can be stored for up to 6-12 months without significant capacity loss if stored in a cool, dry place at a partial state of charge. However, it’s important to monitor the battery’s state of charge and temperature regularly to ensure that it remains within the recommended range.

Tips for Extending UPS Battery Life in Storage

1. Maintain the Right Temperature: It’s important to store UPS batteries in a cool, dry place to prevent excessive heat or cold from impacting their performance.

2. Regularly Monitor State of Charge: Check the state of charge of the batteries regularly and recharge them if necessary to prevent them from fully discharging, which can lead to capacity loss.

3. Implement a Maintenance Schedule: Develop a routine maintenance schedule for UPS batteries in storage, including periodic inspections and testing to ensure that they remain in good condition.

4. Follow Manufacturer Recommendations: Always follow the manufacturer’s recommendations for storing UPS batteries, as different types of batteries may have specific requirements for optimal storage conditions.


In conclusion, the longevity of UPS batteries in storage depends on a variety of factors, including temperature, humidity, and the state of charge. By following the tips outlined in this article and implementing a proper storage and maintenance plan, you can extend the lifespan of UPS batteries and ensure that they remain in good condition when they are needed. Remember to always refer to the manufacturer’s guidelines for specific recommendations on storing and maintaining UPS batteries.

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