Hardware⏱️ 4 min read📅 2026-06-19

How to Fix: Laptop sudden error message: “battery is not genuine”

Laptop error message: 'battery is not genuine' - Lenovo Thinkpad E450

Quick Answer: Try resetting the BIOS settings to their default values or updating the laptop's firmware, as these issues are often resolved by simple system updates.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🚀 How to Resolve This Issue
  3. 🎯 Final Words

The Lenovo ThinkPad E450 laptop is experiencing an error message 'battery is not genuine' when powered on. This issue affects users who have recently purchased or received a replacement battery for their laptop, and may be caused by a faulty battery or a misconfigured system setting.

This problem can be frustrating as it prevents the laptop from fully charging, leading to reduced battery life and potential damage to the battery or other components.

💡 Why You Are Getting This Error

  • The primary cause of this error is that the laptop's BIOS has been set to only recognize genuine Lenovo-made or authorized batteries. This is a security feature designed to prevent counterfeit batteries from causing harm to the system. If the battery was not installed by a Lenovo authorized service center, it may be recognized as non-genuine.
  • Another possible cause is that the battery itself is faulty or has been tampered with, which can trigger the error message.

🚀 How to Resolve This Issue

Resetting the BIOS

  1. Step 1: Press and hold the 'Fn' key along with the power button to turn on the laptop. Immediately release the power button but keep holding the 'Fn' key.
  2. Step 2: Use a USB flash drive or CD/DVD with the Lenovo BIOS update tool pre-installed to boot the laptop into the BIOS setup utility.
  3. Step 3: Enter the BIOS setup utility and navigate to the 'Advanced' tab. Look for the 'Security' or 'Boot' options and disable the 'Battery Authentication' feature.
  4. Step 4: Save the changes and exit the BIOS setup utility. The laptop should now recognize the battery as genuine and allow it to charge properly.

Replacing the battery with a genuine Lenovo replacement

  1. Step 1: Purchase a genuine Lenovo replacement battery from an authorized retailer or the Lenovo website.
  2. Step 2: Remove the battery compartment cover by prying it off with a plastic spudger. Be careful not to damage any surrounding components.
  3. Step 3: Locate the battery and disconnect its connector from the motherboard. Gently lift the battery out of its compartment.
  4. Step 4: Insert the new genuine Lenovo replacement battery into the compartment, making sure it is securely seated and the connector is properly connected.
  5. Step 5: Replace the battery compartment cover and reconnect the power cord to boot up the laptop.

🎯 Final Words

To resolve the 'battery is not genuine' error on a Lenovo ThinkPad E450 laptop, either reset the BIOS to disable battery authentication or replace the battery with a genuine Lenovo replacement. If the issue persists after trying these methods, it may be necessary to contact Lenovo support for further assistance.

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