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MN 325/MN 525 User’s Manual
Uninterruptible Power Supply (UPS)
9
BATTERY REPLACEMENT PROCEDURE
MN 525
Retaining Screws
6. Disconnect the battery positive (red) wire from the battery positive (+) terminal.
7. Turn the power switch on, to discharge the UPS.
8. Disconnect the battery negative (black) wire from the battery negative (-) terminal.
9. Remove the defective battery from the battery compartment.
10. Install the new battery into the battery compartment.
11. Reconnect the battery negative (black) wire to the battery negative (-) terminal.
12. Reconnect the battery positive (red) wire to the battery positive (+) terminal. Note: Some spark-
ing may occur, this is normal.
13. Reinstall the battery compartment door and the retaining screws.
14. Charge the UPS for 4 to 8 hours to ensure the UPS performs expected runtime.
Note: Batteries are consider HAZARDOUS WASTE and must be disposed of properly at an ap-
propriate recycling facility or return them to the supplier in the packing material for the new bat-
tery. Contact your local government for more information about proper disposal and recycling of
batteries.
Note: Replace the batteries with the same number and type as originally installed in the UPS.
These batteries have pressure-operated vents. These UPS contain sealed non-spillable lead-acid
batteries.
Model # MN 325 MN 525
Battery
Model #
12V3ah 12V7ah
Battery
Part #
BP3-12 BP7-12