How To Replace A Laptop Battery
How To Replace A Laptop Battery

Replacing a laptop battery used to be very simple as in most cases they were external. You might still be trying to replace an external battery and, if so, you simply unlock it and slide it out of the bottom or back side of your laptop.

What’s much more common nowadays are internal batteries. The reason for this? They can be made much thinner and so the laptop too can be made thinner, less bulky, and lighter. Changing an internal battery is a little more complicated so always arm yourself with a Youtube Video that shows how to tear down your laptop. Here’s a comprehensive step-by-step guide that goes over the general process:

  1. Gather Necessary Tools and Supplies: You’ll need a new laptop battery, a Phillips screwdriver, a Torx driver (if applicable), a small flathead screwdriver, a suction cup, a microfiber cloth, isopropyl alcohol, and possibly an anti-static wrist strap for internal batteries​​​​.
  2. Safety Precautions: Turn off your laptop and unplug it from the power outlet. This is crucial to avoid any electrical hazards.
  3. Search Youtube: Look for ‘tear down’ videos of your laptop so you can see exactly what needs to be done to fully take apart your unit. You’ll want to search for your “laptop make/model” and “tear down video” to find the best results. So, for example, if you’re changing the battery on a Dell Inspiron 15 3000 you would want to search for “Dell Inspiron 15 3000 tear down video”.
  4. Remove the Back Panel: Depending on your laptop model, unscrew the back panel using the appropriate screwdriver. Use the suction cup if needed to gently lift the back panel off​​.
  5. Battery Location and Removal: Locate the battery, which is typically near the bottom of the laptop. Disconnect the battery cable using the flathead screwdriver and unscrew the battery with the Phillips screwdriver to remove it​​.
  6. Install the New Battery: Place the new battery in its designated spot and secure it with the screws. Reconnect the battery cable to the motherboard.
  7. Reassemble the Laptop: Carefully replace the back panel and secure it with the screws.
  8. Power On and Test: Turn on your laptop and test the new battery by checking its charge and discharge rates.

Additional Tips:

  • Always use a certified compatible battery purchased from an authorized reseller​​.
  • Check with your laptop’s manufacturer to ensure replacing the battery doesn’t void your warranty​​.
  • Avoid overheating the laptop and handle internal components with care.
  • For certain brands like Lenovo, ensure the replacement battery is compatible and authorized, as some models have a safeguard chip​​.

Considerations for Different Laptop Models:

  • The process may vary slightly based on the laptop model. For instance, some may require additional tools like a Torx driver​​.
  • The difficulty level can vary; external batteries are easier to replace than internal ones, which may require more careful handling​​.

By following these steps and tips, you can effectively replace your laptop battery. If you’re not comfortable performing these steps, seeking professional assistance is advised.

Eric Chan

Hi! I’m Eric and I work on the knowledge base at  You can see some of my writings about technology, cellphone repair, and computer repair here.

When I’m not writing about tech I’m playing with my dog or hanging out with my girlfriend.

Shoot me a message at if you want to see a topic discussed or have a correction on something I’ve written.

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