How To Prevent Passivation Of Uninterruptible Power Supply (ups) Batteries?

In enterprise-level backup power environments, devices rely on ups back up power to provide stable backup power for critical loads. Battery passivation is a significant factor affecting the performance of the uninterrupted power source. The following content, from the perspective of the company's technical blog, explains "how to prevent passivation of 24v ups power supply batteries" in order to improve operational reliability.

Causes of Battery Passivation

Passivation typically refers to the formation of an electrochemically inert film inside the battery. This film accumulates on the surface of lead-acid or lithium-ion battery plates, leading to increased internal resistance and voltage delay. In ups electrical supply systems, prolonged float charging, failure to recharge promptly after deep discharge, and improper temperature control can all accelerate this film formation.

Operational Recommendations for Inhibiting Film Growth

Periodically perform short-duration load tests on uninterruptible power supply rack mount battery packs to encourage film breakdown and restore normal conductivity. Set up a monitoring system to record changes in battery internal resistance and startup voltage, and take timely maintenance measures when voltage startup delays or abnormal internal resistance are detected. Control the battery ambient temperature within the manufacturer's recommended range and avoid operation at excessively low or high temperatures. Maintaining the battery's state of charge within a reasonable range, and avoiding prolonged storage at full charge or zero charge, helps inhibit rapid film buildup.

Key aspects of the maintenance cycle

Develop a periodic inspection plan, including checking the electrolyte (if applicable), cleaning battery terminals, and verifying the tightness of connections. Ensure the charge/discharge control module is functioning correctly to prevent chemical reaction stagnation due to prolonged inactivity. If the battery's startup voltage is found to be below the standard value, a health assessment of the battery pack should be scheduled, and severely passivated modules should be replaced. Through these measures, the back up power supply for computer system can be maintained in a high-availability state, thereby meeting business continuity requirements.