Introduction
The battery is a critical component that keeps your device powered. It supplies energy to all parts of the laptop and must hold a charge long enough to make the device portable.
If your laptop can’t hold a charge or must remain plugged in to stay on, the battery is likely the cause.
This guide shows how to replace the battery in a Lenovo IdeaPad L340-15API.
Before you begin, power off the laptop and disconnect the charging adapter and any external peripherals.
What you need
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Use a Phillips #1 screwdriver to remove the 7.5 mm screw securing the optical drive.
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Place your thumb at the seam between the optical drive and the device.
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Gently pull the component straight out from the device, taking care not to pull at an angle.
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Use a Phillips #1 screwdriver to remove the twelve 7.5 mm screws from the back cover.
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Insert a plastic opening pick in the back left corner and wedge the panel open.
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Slide the pick around the edge of the laptop to release the clips as you lift the panel.
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Remove the bottom cover.
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Use the Phillips #1 screwdriver to remove the five 6.5 mm screws securing the battery.
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Use the wide end of a spudger to push the connector tab, sliding the battery connector out of its socket.
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Ask FixBot
To reassemble your device, follow these instructions in reverse order. Take your e-waste to an R2 or e-Stewards certified recycler.
For optimal performance, calibrate your newly installed battery after completing this guide.
Team
UMass Dartmouth, Team 2-5, Bowman Fall 2025 Member of UMass Dartmouth, Team 2-5, Bowman Fall 2025
UMASSD-BOWMAN-F25S2G5
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