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If an alarm is present, refer to the
UPS5000-E alarm reference to
check the device status and
parameters.
1. Clean the batteries.
2. Take photos of the misshapen
parts and faulty parts of
batteries.
3. Check and record the charge
voltage and charge current of the
battery string, and the voltage of
every single battery in this
battery string.
4. Check the battery surface
temperature.
5. Power off the battery string and
remove faulty batteries. After 30
minutes, check and record the
open-circuit voltages of the
faulty batteries.