Most laptop batteries unscrew or pop out from the bottom, but the exact method depends on your model

Replacing a laptop battery yourself takes 10 to 30 minutes and costs between $40 and $150, depending on your machine. The process is straightforward for most laptops: power down, flip the machine over, locate the battery compartment, and either unscrew or slide out the old battery. Some newer models—particularly thin ultrabooks and MacBooks—have batteries glued in place, which means you will need a technician or a repair shop to do the work safely.

Before you start, identify your exact laptop model and find the battery part number. You can find this in your system settings or by looking at the battery itself if you can see it from the outside. Order the replacement battery from the manufacturer, a reputable electronics retailer, or a certified refurbisher. Avoid unmarked batteries from unknown sellers; they may not hold a charge or could damage your machine.

Key Takeaways

  • Most replaceable batteries are accessed from the bottom of the laptop and held in place with one or two screws or a plastic latch.
  • Thin laptops and MacBooks often have batteries soldered or glued to the motherboard, which requires professional removal.
  • You need the exact battery part number before ordering, which you can find in your system settings or printed on the current battery.
  • Replacement batteries cost $40 to $150 and should come from the manufacturer or a certified seller to avoid damage or poor performance.
  • The entire replacement takes 10 to 30 minutes and requires only a screwdriver; if you are uncomfortable opening your laptop, a repair shop can do it for $50 to $100 in labor.

Check whether your battery is user-replaceable

Open your laptop's system settings and look for battery information. On Windows, go to Settings > System > About and scroll down to find the battery part number. On Mac, click the Apple menu, select About This Mac, and then System Report. Look for the battery serial number or model number.

Next, search your laptop model and "battery replacement" on the manufacturer's website or YouTube. If you find a video showing someone removing the battery from the bottom in under five minutes, your battery is user-replaceable. If the results show a technician removing the entire bottom panel or heating the case, the battery is likely glued in and you should take it to a repair shop instead.

Some common user-replaceable models include older Dell Inspiron and XPS machines, Lenovo ThinkPads, HP Pavilion and Envy lines, and Asus VivoBook. Most MacBook Air and Pro models made after 2016, along with newer Dell XPS 13 and HP Spectre models, have non-replaceable batteries.

Gather the right battery and tools

Order a replacement battery that matches your laptop's part number exactly. You can find this number on the existing battery itself—flip your laptop over and look for a sticker on the battery compartment—or in your system settings. Search for that part number on the manufacturer's website first. Dell, Lenovo, HP, and Asus all sell batteries directly, and prices are usually $60 to $120.

If the manufacturer's site is out of stock, try certified retailers like Best Buy, Amazon (filter for items sold by the manufacturer), or Newegg. Avoid third-party sellers with no reviews or suspiciously low prices; counterfeit batteries can fail quickly or overheat. You will also need a Phillips head screwdriver—most laptop batteries use size #0 or #1 screws.

Power down and prepare your laptop

Shut down your laptop completely and unplug the power adapter. Wait two to three minutes for the machine to cool. Do not attempt a battery swap while the laptop is in sleep mode or hibernation; you need it fully powered off.

Place the laptop on a clean, flat surface with the bottom facing up. If your work surface is carpeted, lay down a mat or towel to reduce static electricity risk. Ground yourself by touching a metal part of the laptop frame before you touch the battery or any internal components.

Remove the old battery

Locate the battery compartment on the bottom of your laptop. Most batteries are held in place with one or two Phillips head screws. Unscrew these and set them aside in a small cup or on a piece of tape so you do not lose them. Some laptops have a plastic latch or tab instead of screws; slide or flip this to release the battery.

Gently pull the battery toward you at a slight angle. It should slide out smoothly. If it does not budge, check for a second screw or latch you may have missed. Do not force it; forcing a stuck battery can damage the connector or the motherboard. Once the battery is out, set it aside—do not throw it away yet. You may need to return it to the manufacturer or take it to an electronics recycling center.

Install the new battery

Align the new battery with the compartment, making sure the connector pins face toward the laptop's interior. Slide the battery in at a slight angle until it sits flat in the compartment. The battery should fit snugly without any gaps.

Replace the screws or latch. Tighten the screws firmly but do not overtighten; you only need enough pressure to hold the battery in place. If your laptop uses a latch, slide or flip it until you hear or feel a click. Flip the laptop over and plug in the power adapter.

Test the new battery and calibrate if needed

Power on your laptop and check that the battery is recognized in your system settings. On Windows, go to Settings > System > Battery and Device Health. On Mac, click the battery icon in the menu bar. The new battery should show up with a full charge or close to it.

Let the laptop charge to 100 percent, then use it normally until the battery drains to 0 percent and the machine shuts down. Plug it back in and charge to 100 percent again. This cycle helps the operating system calibrate the battery meter so it shows accurate remaining time. Most modern laptops do this automatically, but running one full cycle ensures the battery is working correctly.

If the battery does not show up in your settings or the laptop does not power on, power down when ready, remove the battery, and check that the connector is fully seated. Reseat the battery and try again. If the problem persists, the battery may be defective; contact the seller for a replacement.

Dispose of the old battery safely

Lithium batteries cannot go in the trash or recycling bin. Take the old battery to an electronics retailer that accepts batteries—Best Buy, Staples, and most local computer repair shops will take them for free. Some manufacturers also offer mail-back programs; check the manufacturer's website for details.

If you are returning the battery to the manufacturer as part of a warranty claim, pack it carefully in a box with padding and ship it according to their instructions. Do not leave a used battery in a drawer or closet; they can overheat or leak over time.

Frequently Asked Questions

What if my laptop battery is glued in?

If your battery is glued or soldered to the motherboard, you will need a technician to remove it. Most repair shops charge $50 to $100 in labor plus the cost of the battery. Contact the manufacturer's support line or search for an authorized repair center in your area.

Can I use a third-party battery instead of the manufacturer's?

Third-party batteries are cheaper but carry more risk. They may not hold a charge as long, overheat, or damage your laptop's charging circuit. If you choose a third-party battery, buy from a seller with many positive reviews and a return policy, and monitor the battery closely during the first week of use.

How long does a new laptop battery last?

A new battery typically lasts two to four years with normal use, depending on how often you charge it and how hot your laptop runs. Batteries degrade faster if you leave your laptop plugged in constantly or use it in hot environments. You can extend battery life by keeping your laptop between 20 and 80 percent charge when possible.

Do I need to remove the keyboard or other parts to access the battery?

Most user-replaceable batteries are accessible from the bottom panel alone. If your laptop requires you to remove the keyboard or motherboard, the battery is not designed for user replacement and you should take it to a repair shop instead.

What should I do if the new battery does not charge?

First, make sure the battery connector is fully seated in its slot. Power down, remove the battery, and reseat it firmly. If it still does not charge, try a different power adapter to rule out a charger problem. If the battery still does not work, contact the seller for a replacement under warranty.