Secure Power Ltd
User Manual
23
5.0 Maintenance
This series of UPS requires minimum maintenance as the batteries are maintenance free sealed lead
acid. It only needs to be kept charged to obtain the expected life. Whether it is started or not, the UPS
would charge batteries once it is connected to mains and provides protection for over-charging and
deep discharging.
5.1 Replacing Batteries
1. It is recommended that the batteries are manually charged or discharged once every three or four
months if UPS has not been used for a long time or the power is long-term uninterruptible. The battery
will be fully discharge to low-voltage protection shutdown and then it needs to be fully charged once.
2. In high temperature area, batteries should be manually charged and discharged once every two
months. The process is the same as that said above.
3. Under normal circumstances of using, the battery life is three to five years. If you find that the
batteries do not act function correctly, such as reduced backup time, too much imbalance on battery
voltage so on, the battery should be replaced as soon as possible, which must be performed by
qualified personnel.
4. It is advised that all batteries are changed at the same time, not individually.
Notice:
► Before replacing the batteries first turn the UPS off and disconnect from the mains. Remove your
metallic adornment such as finger ring, watch and so on.
► When replace batteries, please use the screwdriver with insulating handle. Do not lay the tools or
metallic goods on the battery.
► Never reverse or short circuit between the battery anode and cathode.
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