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简介

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.

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步骤 1 Optical Drive

IdeaPad L340-15API Battery Replacement, Optical Drive: 步骤 1 中的图像 1，2

IdeaPad L340-15API Battery Replacement, Optical Drive: 步骤 1 中的图像 2，2

Before beginning the repair, make sure that the device is fully powered off.
Turn the laptop over so the bottom cover is facing up.
The small screw hole near the center of the case, marked with a tiny DVD icon and an arrow, secures the optical drive.

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步骤 2

Use a Phillips #1 screwdriver to remove the 7.5 mm screw securing the optical drive.
Place the screw down safely in a container/magnet strip where it will not get lost while you are working. These screws are very small and easily misplaced.

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步骤 3

Place your thumb at the seam between the optical drive and the device.
Gently pull the component straight out from the device, taking care not to pull at an angle.

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步骤 4 Battery

IdeaPad L340-15API Battery Replacement, Battery: 步骤 4 中的图像 1，2

IdeaPad L340-15API Battery Replacement, Battery: 步骤 4 中的图像 2，2

Use a Phillips #1 screwdriver to remove the twelve 7.5 mm screws from the back cover.

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步骤 5

IdeaPad L340-15API Battery Replacement: 步骤 5 中的图像 3，3

Insert a plastic opening pick in the back left corner and wedge the panel open.
Slide the pick around the edge of the laptop to release the clips as you lift the panel.
If the opening pick isn’t working, use the iFixit opening tool to gain more leverage.
Remove the bottom cover.

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步骤 6

Use the Phillips #1 screwdriver to remove the five 6.5 mm screws securing the battery.
Use a container/magnet strip to store the screws while working.

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步骤 7

IdeaPad L340-15API Battery Replacement: 步骤 7 中的图像 3，3

Use the wide end of a spudger to push the connector tab, sliding the battery connector out of its socket.
It may take a lot of force to disconnect the cable. Go slowly, and don't pull on the cables.