OPTI-UPS ES1500C User Manual
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6.2 Battery Replacement Procedure
Changing the batteries in your UPS is a safe and easy procedure. Since the
battery is isolated from the AC input you may leave your UPS and computer
or other equipment on during the following procedure. Please read the
cautions in section 6.1 before performing the following steps.
Replacement Procedure for ES550C, ES800C
1. Remove the two screws on the battery cover.
2. Pull and open the cover. Gently pull out the battery.
3. Disconnect the two wires connecting the battery to the UPS.
4. Connect the wires to the new battery, making sure that the red wire is
connected to the red battery terminal and the black wire is connected to
the black battery terminal.
5. Push the new battery into place.
6. Close the cover, and replace the screws back to the cover.