Three measures to extend the life of the UPS battery pack

Backup UPS power failure caused by a battery of more than 50% of the total failure of the UPS maintenance work in various fault statistics can conclude that: Online UPS power supply, because of its circuit design is reasonable margin taken by the drive power element capacity, and thus the power supply circuit failure rate is very low, by contrast, the failure rate caused by the battery pack is increased to above 60%. Properly use and maintain a good battery is one of the key factors that extend the life of the battery pack, to reduce the total failure rate of the UPS power.

1. Periodically check regularly check each unit cell terminal voltage and internal resistance. 12V unit cell in the inspection if found between the side of each unit cell voltage difference exceeds 0.4V or more, or is electrically balanced charging his internal resistance of more than 80mΩ, should be carried out in each unit cell in order to restore the internal resistance of the battery and eliminate unbalance between the terminal voltage of each unit cell. Equalizing charge, charging voltage 13.5 ~ 13.8V can take. After the vast majority of well-balanced battery charging process can be internal resistance to return to the 30mΩ below.

2. Re-float the UPS power shutdown for more than 10 days, UPS power to take advantage of the charging circuit inside the machine to re-load operation battery float over again with 10 ~ 12h before the reboot should start without load conditions.
The UPS power long-term floating state without discharge process, equivalent in storage READY "state. If this state continues for too long, resulting in the scrap batteries stored for too long "and failure, it mainly increases the internal resistance of the battery, the internal resistance of up to a few Ω serious.

3. Power supply peak charging for UPS power a long period of low-voltage power supply mains or frequent blackouts users, in order to prevent the battery charge long enough prematurely damage, should take full advantage of the peak (such as late at night) to charge the battery to ensure that the battery charging time enough after each discharge. General battery deep discharge, recharge to 90% of the rated capacity of at least about 10 ~ 12h.

PREV article：How to buy a quality UPS power

NEXT article：Knowledge of diesel generator set fuel economy