Introduction
How to replace the battery of a Lenovo ThinkPad T420 laptop. The images and information in this guide were taken from this computer's service manual.
What you need
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Unlock the battery latch and hold it it the unlocked position.
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Remove the battery pack in the direction shown by arrow.
Ask FixBot
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Conclusion
To replace the battery & reassemble your device, follow these instructions in reverse order.
