Introduction
This guide will show you how to replace the battery in a Sharp-EL-531xg calculator. You may need to change the battery when the calculator's display is dim or when the calculator is not working. This calculator has two ways to charge the battery: the solar cell and the battery; however, the solar cell is dependent on the battery.
Tools
Parts
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Flip the calculator over so the back is facing upwards.
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Remove the single screw from the battery panel using a Phillips #0 screwdriver.
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Put the battery cover back on.
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Tighten the battery cover screw with a Phillips #0 screwdriver.
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Press the On button to turn on the calculator.
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Flip the calculator over so the bottom is facing upwards.
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Press the reset button with the pointed end of a spudger to restart the calculator.
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