How Long Will the UPS Battery Last?

In fact, many UPS now also use lithium batteries, which can be integrated into standard racks. However, due to the limitation of volume, the battery capacity will not be very large. Correspondingly, the result is that the backup time is not long enough, and the rated backup time is maybe five minutes. Make sure that the server can be saved and shut down normally, or wait until the engine is powered on. But by 2022, in the current mainstream application solutions (95%+), UPS is still used in conjunction with lead-acid batteries. ATO uninterruptible power supply batteries are lead-acid batteries.

UPS service life depends on the operating environment, maintenance and upkeep. The maintenance-free battery used in the UPS power supply generally has a life span of 3 to 5 years. Some users will also use long-life battery models, such as 8 to 10 years, and the longest can reach more than 20 years. The normal life of the battery of the UPS is relatively long. It can be used for 5-8 years if it is used reasonably and discharged once a month. After that, the capacity will decrease significantly. At this time, it is necessary to consider replacing the battery of the UPS.

UPS battery replacement cycle

According to past experience, in order to ensure the reliable, stable and safe operation of the system, it is generally recommended to replace the battery of the UPS every 5 years or so. For harsh environments (such as the ambient temperature is often higher than 35°C or there is no regular maintenance), it is recommended to replace the UPS battery every 3 years or so. The life of the battery can also be judged by the number of charges and discharges.

When the depth of discharge of the battery is 100%, the actual service life of the battery is about 100-200 charge-discharge cycles. If the depth of discharge of the battery is 50%, the number of charges and discharge cycles can be increased to about 300-400 times. When the depth of discharge is 30%, the number of charges and discharge cycles can reach more than 600 times. In general, keeping the battery from a deep discharge state is to prolong the life of the battery.

Summary

• At present, there is no clear regulation on how often the UPS battery in the computer room should be replaced.
• Enterprises can choose the best replacement time according to their own needs.
• The replacement time should be considered comprehensively. This is related to the material of the battery, the warranty period, the number of charges and discharges, the change of internal resistance, the temperature, humidity and cleanliness of the battery room.
• It is recommended to check the battery of the UPS power supply once a month to eliminate hidden dangers.