How long it takes to replace a UPS capacitor depends on the specific model, the operating environment, the maintenance and upkeep, and the company's attitude towards the old UPS.
UPS power supplies are equipped with maintenance-free batteries, the life of which is generally 3 to 5 years. Some users will also be equipped with long-life models, such as 8 to 10 years, the longest up to 20 years or more. There is no clear regulation of how often the UPS batteries in the room should be replaced, companies can choose the best time to replace them according to their own needs.
The normal life of the UPS battery is still relatively long, reasonable use of a regular discharge every month to maintain the case can be used for 5-8 years, after which the capacity will decline significantly need to consider replacing the UPS power supply battery.
Precautions:
If the inefficiency, insufficient capacity, poor operating environment, such as high temperatures, ash layer is too large, humidity, etc. will shorten the life of the UPS batteries, maintenance and maintenance is not in place, will also shorten the life of the UPS.
The life of the battery can also be judged by the number of charge and discharge, the battery discharge depth of 100%, the actual life of the battery is about 100-200 charge and discharge cycles.
If the depth of discharge of the battery is 50%, the number of charge/discharge cycles can be increased to about 300-400 times; the depth of discharge of 30%, the number of charge/discharge cycles can be more than 600 times. This shows that in order to extend the service life of the battery, the battery is generally not allowed to be in a deep discharge state.
In order to ensure that the system is reliable, stable and safe operation, the general UPS battery is recommended to be replaced in about 5 years. For the environment is relatively harsh conditions (such as ambient temperature is often greater than 35 ℃ or no regular human maintenance), it is recommended that the UPS battery replacement in about 3 years.
Replacement time and battery materials, warranty period, charge and discharge times, internal resistance changes, battery room temperature, humidity and cleanliness of the environment should be considered.