How to prevent damage from excessive discharge of UPS power batteries?
(1) Batteries that have been discharged to a low state with a load must be recharged within 72 hours after being discharged to avoid damage to the battery;
(2) When the UPS power supply is idle, the connected battery should be disconnected, otherwise it will cause the connected UPS battery to be over discharged and damaged within a few days to a week. Therefore, when the UPS uninterruptible power supply is not in use, the connection line between the battery and the UPS power supply host should be disconnected;
(3) Battery manufacturers recommend that UPS power batteries should be charged immediately after discharge. Recharging UPS power batteries within 72 hours after discharge will fully restore the capacity and lifespan of the battery. UPS power batteries do not allow the voltage of each unit to be lower than 1V after discharging, and for 12V batteries, it is 6V;
(4) UPS usually designs an alarm. When the voltage drops to near the discharge termination voltage (when a single 12V voltage is close to 10.8V), an alarm will sound. At this time, the electrical appliances should be immediately turned off and the UPS should be turned off. However, when the discharge termination voltage is reached, it will automatically shut down to prevent over discharge;
(5) UPS power batteries do not actually have high requirements for temperature, as long as they are at room temperature. If the temperature is too high, it can easily cause the battery temperature to rise and damage its performance. If the temperature is too low, it can easily reduce its activity, leading to poor battery acceptance and multiple charging and discharging cycles, indirectly shortening the service life of electric vehicle batteries.
The above are the reasons for excessive deep discharge of UPS power batteries. UPS power supply should avoid short circuit discharge or excessive discharge of UPS batteries during daily use. Only accurate use of UPS can extend the service life of UPS power supply.