Step 1 Backup Battery



• Remove the battery cover.
• Remove the AAA batteries from the calculator.
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Step 2

• Remove the 5mm Philips #00 screw holding backup battery cover.
• Remove the backup battery cover.
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Step 3
• Use plastic opening tool to remove the backup battery. Place the tool in the small cut-out next to the battery and pry the battery out.
• Be careful, the backup battery is spring loaded and may shoot up when you remove it.
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