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The E-125 uses a button cell backup battery in addition to the main battery. If left uncharged for an extended period, the backup battery will be exhausted, and all data may be lost.

This guide shows you how to replace this battery.

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  1. Casio Cassiopeia E-125 Back Up Battery Replacement, Back Up Battery: step 1, image 1 of 1
    • Flip the device over to the back side.

  2. Casio Cassiopeia E-125 Back Up Battery Replacement: step 2, image 1 of 1
    • Flip the switch to "BACK UP".

  3. Casio Cassiopeia E-125 Back Up Battery Replacement: step 3, image 1 of 1
    • Remove the battery cover by pulling bottom section upwards as shown.

    • Insert a Spudger underneath the battery and pry upward to remove it.

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Insert the replacement battery and follow this guide's steps in reverse to reassemble.

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Ryan Fernandez

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CPSU-FORTE-S12S5G4

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