How To Replace Laptop Battery: The Essential Guide

Are you having problems with your laptop battery? Does it not last as long as it used to? If so, it might be time for a replacement.

Replace Laptop Battery How-To x
Replace Laptop Battery How-To

In this guide, we will walk you through the essential steps necessary to replace your laptop battery. We’ll cover everything from what tools you’ll need to how to remove the old battery and install the new one.

So whether you’re a novice or an experienced computer user, you’ll be able to replace your laptop battery like a pro.

And if you need a new gaming chair and keyboard for your computer or are looking for other How-To guides, I’ve got you covered with my other articles.

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The how-to guide to replace a laptop battery

I put together this guide to assist you in determining if your laptop battery is bad, and how to replace it if that is the case. An external laptop battery is fairly straightforward to replace, but an internal battery can be difficult depending on the laptop model.

This is typically done by removing a few screws from the bottom of the laptop and then unscrewing and disconnecting the old battery pack before inserting another into its place.

Note: Replace the laptop battery only with a certified compatible battery purchased from an authorized reseller.

Can I replace my laptop battery myself?

Yes, you can replace your laptop battery yourself as long as you have the correct tools and follow the manufacturer’s instructions. There are some precautions about removing and replacing your laptop battery; check with the manufacturer to ensure you are not voiding a warranty, as well as tips they may provide.

Note: Some laptop manufacturers such as Lenovo have a safeguard chip that authenticates with Lenovo systems. This means if you need to buy a replacement battery, make sure it is compatible and authorized to work on your Lenovo laptop.

What do I need to replace my laptop battery?

You will need the following:

  1. A replacement for your model of laptop battery. You can find one at Amazon or at a computer store.
  2. A computer/laptop repair kit that includes a Phillips head screwdriver and a Torx driver. The kit also has tools to aid you in opening a laptop.

How do I replace my laptop battery?

Follow these seven steps to replace the battery:

Step one: Purchase a replacement battery for your model of laptop. This can be done online or at a computer or electronics store. Lenovo, for example, has a battery reference chart to help you select the right one.

Step two: Gather your tool kit including a Phillips head screwdriver, Torx driver, and if your laptop has an internal battery, an anti-static wrist strap.

Step three: Turn off your laptop and remove the power cord from the back of the machine. Unplug any other cords connected to the computer including USB or Ethernet cables.

Step four: Place your laptop on a flat surface and remove all screws from the bottom of it using a Phillips head screwdriver (or star key if they are Torx). You may need to consult with your manufacturer’s guide for how many screws there are and where exactly they are located because this can vary from laptop to laptop.

Step five: Carefully open the laptop and take a look at where the old battery is located. On some laptops, it will be in the lower part of the machine. You can identify it because it will be large and have battery markings on it (See image below). There are usually a few screws that secure it in place, plus a connection cable –these need to be released before you can remove the battery.

Identify Laptop Battery

Step six: Using a Phillips head screwdriver, remove the screws that hold the battery in place. Also, release the cable connection being careful not to break it.

Step seven: Replace the old battery with a new one and reattach the cable connection and replace the screws that were removed along the way. Be sure not to over-tighten them as they can strip out.

Is it hard to replace a laptop battery?

No, it is not difficult to replace a laptop’s internal battery. You will need to have a Phillips head screwdriver and maybe a Torx driver, depending on your laptop. Take your time when removing the back cover as not to break any internal clips, but the whole process is pretty straightforward.

How often should I replace the laptop battery?

How often you will need to replace the battery depends entirely on you, your laptop, and how you use it. The answer will be different for everyone. As shown below, laptop batteries last on average between 2 to 4 years.

Conservatively, a laptop battery will attain between 300 and 500 discharge/charge cycles.

Signs that your laptop battery is failing are it not holding a charge, or discharging quickly. See more information in my post about laptop batteries not charging.

How much does it cost to replace a laptop battery?

A replacement internal laptop battery will cost between $30 and $100 dollars. This will vary by the brand and power of the battery itself. For example, a 51W battery will be cheaper than an 80W battery. Be sure to replace your internal battery with the same power rating.

Note: Some laptop manufacturers such as Lenovo have a safeguard chip that authenticates with Lenovo systems. This means if you need to buy a replacement battery, make sure it is compatible and authorized to work on your Lenovo laptop.

How do I know if my laptop battery is bad?

Before you replace a battery, make sure it’s actually defective and not just running low or suffering from software issues. See below for the things to check:

Check the Battery Status in Windows:

Two options to see the battery status in Windows.

1. If you are running Windows 10, there is a battery status check you can run.

It is called Battery Check and is run under Command Prompt.

  1. Right-click on the start menu
  2. Select Windows PowerShell(Admin)
  3. In the window type in: powercfg /batteryreport
  4. This will generate a report detailing the laptop’s battery.

2. Windows 10 has a battery-saving power mode called Battery Saver.

By default, the Battery saver will automatically turn on when the battery power falls below 20%. Some background applications and push notifications will be limited in this state.

To see or adjust this setting, go to Settings > System > Battery saver.

From the battery saver screen, you can also see what applications are using the most power. Find and select the Battery Use link. You can adjust the battery use screen to display selected time frames.

Optionally, you can adjust your power usage plan: Open up your Control Panel and go to Hardware and Sound > Power Options. There you’ll see a list of all the available power plans, and clicking on “Change advanced power settings” will give you more options to tweak your battery life.

Check the Battery Status in macOS:

In macOS check the battery status by opening up the Apple menu > System Preferences > Energy Saver and then clicking on “Battery.” This will show you how much time is left before your laptop needs charging again, as well as what percentage of capacity it’s currently at.

How long do laptop batteries last?

How long your laptop battery lasts will depend on several factors such as usage and care. On average though, a laptop battery can last between two to four years before it needs replacing. If you use your computer frequently, then the lifespan will be shorter because it gets discharged more often.

Why does a laptop’s battery capacity decrease?

Over time, the battery’s capacity will decrease as it is used and recharged. This is normal wear and tear, and there’s not much you can do about it. However, you can extend the life of your battery by following some simple guidelines:

  1. Keep your laptop cool: A hot laptop will run down its battery faster than a cooler one. So make sure to keep your device in a well-ventilated area and never cover it while it’s charging.
  2. Avoid excessive heat exposure: Don’t use your computer in environments where it could get too hot, like a car or direct sunlight.
  3. Use the power adapter whenever possible: A laptop runs off of its battery when plugged into an AC outlet, but this can drain the life expectancy if you do it for long periods at a time. Try to use an external power source whenever possible.
  4. Avoid full discharges: Try not to let your battery get completely drained before recharging it again. This will help maintain its longevity and capacity over time. Keep it between 50% and 80% charge all the time.

How can I test my laptop battery?

Run the Battery Check tool shown above and look at the report it outputs. It will show you if there is anything wrong with your battery. Alternatively, download a battery test utility such as BatteryInfoView or CoconutBattery for macOS, to get detailed information about your battery’s state of health.

Calibrating your laptop battery

To calibrate and reset the battery in Windows 10:

  • Run the laptop until it displays ‘low battery’ to fully discharge the Li-ion battery.
  • Then fully charge the battery to 100%. This will reset some flags that assist inaccurate readings. This process might be occasionally needed but will affect the longevity of the battery.

What drains a laptop battery the most?

There are several things that can drain the battery of your laptop, including:

  • Screen brightness level. The brighter your screen is, the more power it will use.
  • Wi-Fi and Bluetooth connections. If these are turned on, they will use up battery life even if you aren’t using them. But if you’re connected to a network and want to stay online, then leave them on.
  • The number of applications running in the background.
  • Laptop usage: Are you playing games or watching videos? These activities use more power than surfing on Facebook or checking your email.
  • Battery Health and Longevity: Is your battery old? If so, it might not hold a charge as long as it used to.

How to replace laptop battery dell

A new Dell laptop battery can be found on the Dell.com/support website. Go to the Dell.com/support website, and identify your Dell laptop, then click Download & Install SupportAssist to auto-detect your Dell laptop. Follow the on-screen instructions to install Dell SupportAssist.

Once you find the correct battery for your laptop, go ahead and order it from Dell.

An external battery is simple to remove and replace with the new one. An internal battery will require you to remove the back cover and then the battery. You will need to look at the support manual for your laptop for exact instructions.

How to replace laptop battery Lenovo

Before starting any upgrade, enter the UEFI/BIOS by pressing F2 during boot then select “Disable Built-In Battery” under the configuration setting. This will shut down the laptop and disable the battery so you can safely work inside the unit. After the upgrade, you can reconnect the A/C adapter and the battery will re-enable itself.

Replace internal Lenovo battery:

  1. Ensure the Lenovo laptop is turned off and disconnect the A/C adapter.
  2. Close the laptop display and turn the laptop over to access the back panel.
  3. Remove 8-10 Phillips head screws along the perimeter of the back panel. Some models have fewer screws.
  4. Carefully pry up the latches that hold the back cover in place and remove the back panel. Just work your way around the cover to loosen it using a pry tool or thick guitar pick, then lift it out.
  5. The internal battery is held in with screws and a connection cable. Remove these screws and the cable.
  6. Lift out the old battery and insert the new battery. Re-attach the cable and screw in the battery.

What to do after replacing the laptop battery

Follow best practices for lithium-ion batteries, which is to keep it at about 80% charge always, to provide the longest battery life. You do not need to charge lithium-ion batteries to 100% charge.

What is the proper way to charge a laptop?

To properly charge a Lithium-ion laptop battery:

  1. Turn off the laptop.
  2. Ensure the laptop and battery are moderately cool, or at room temperature. Do not charge a hot or very cold laptop battery.
  3. Use the proper power adapter and do not attempt to quick-charge the battery, this will shorten its life.

Replace laptop battery – Summary

Replacing a laptop battery is not something that needs to be done often, but is generally a task most users can perform. You will get better performance and a longer-lasting battery if you replace it before it is totally dead – which can happen in as little as two years.

When it is time to replace the battery, be sure to check the manufacturer’s website to find the correct type of battery for your laptop. Also, be sure to follow the proper steps for replacing the battery, which may include entering the BIOS and disabling the internal battery. Finally, be sure to follow best practices for charging a laptop battery.