UPS batteries are the heart of your backup power system. Over time, all batteries degrade and eventually need replacement. Understanding when and how to replace them is essential for maintaining reliable power protection.
Signs Your UPS Battery Needs Replacement
- UPS displays a battery warning or fault indicator
- Reduced backup runtime compared to when new
- Battery is more than 3-5 years old
- UPS fails self-test or runtime calibration
- Batteries appear swollen or leaking
- Frequent transfer to battery mode without power events
Replacement Best Practices
Always replace all batteries in a UPS at the same time, even if only one appears to have failed. Mixing old and new batteries reduces overall performance and can damage the new batteries. Use batteries that match the original specifications for voltage, capacity, and physical dimensions.
Extending Battery Life
Keep your UPS in a cool, dry environment. Battery life decreases significantly at temperatures above 77°F (25°C). Ensure proper ventilation and avoid placing the UPS near heat sources. Regular self-tests and firmware updates also help maintain optimal performance.