Introduction
This guide will show you how to locate and replace the Lenovo T431s battery. The battery provides proper power to the computer for its functions. Replacing your battery can be beneficial to improve computer usage and lifetime. If your laptop dies frequently or doesn’t power on, then you should consider replacing your battery.
What you need
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Use a Phillips #1 screwdriver bit to remove the eight 5mm screws from the back panel.
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Once the screws are loose, use the three opening tools to loosen and remove the back panel.
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Carefully unplug the battery cable from the connector on the motherboard, using your fingers to pull the cable straight out of the port.
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Unscrew the 5 small 4mm screws that are holding the battery secure with a Phillips #1 screwdriver bit.
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Remove the Li-polymer battery, highlighted in the image. It will be a large, black and white rectangular object.
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