How to revive a dead laptop battery | get your dead laptop battery to work again

In This article we teaches you how to restore some life to your laptop battery. While you can do a few things to increase battery life, computer batteries should be replaced every 2 to 3 years for optimal performance. Also keep in mind that if your laptop has a lithium battery, freezing or discharging it frequently will further damage the battery.

Step 1

Make sure you don’t have a lithium-ion battery. Your battery must be either a nickel-metal hybrid (NiMH) or a nickel-cadmium (NiCD) for this method to work. If you do this method with the wrong battery, the battery will likely be destroyed.

All Macs contain lithium batteries, and many modern Windows computers use lithium batteries.

You should not perform this operation on a computer with a non-removable battery pack, as doing so will require you to either remove the battery (which may void your computer’s warranty) or freeze the entire computer (which will damage your computer) .

Step 2

Turn off and unplug the laptop. The laptop should be completely turned off and unplugged before attempting to remove the battery, as failure to do so may result in electric shock.

Step 3

Remove the battery. In most cases, you’ll remove the bottom of the laptop and unscrew the battery from there, although your laptop may have a battery release button on the bottom instead.

Step 4

Put the battery in a soft cloth bag. You’ll want to do this to add a buffer between the battery and the second bag you’ll be using. 

Step 5

Put the packed battery in a Ziploc bag. This will ensure that the battery is not exposed to moisture while freezing.

Avoid using a regular plastic bag for this, as moisture may accumulate on the battery in such a bag.

Image titled Revive a Dead Laptop Battery 

Step 6

Leave the battery withinside the freezer for 10 hours. Doing so will give the battery enough time to recover at least part of its life. You can leave the battery inside for up to 12 hours, but leaving it on for longer than that may cause the battery to leak.

Step 7

Recharge the battery. Once the battery has spent enough time in the freezer, you can remove it, dry it if necessary, allow it to return to room temperature, and then reconnect it to your laptop. You must be capable of charge the battery from there.

Expert advice. 

Network and desktop support engineer

Spike Barron is the owner of Spike’s Computer Repair based in Los Angeles, California. With over 25 years of hands-on technology experience, Spike specializes in PC and Mac repair, used PC sales, virus removal, data recovery, and hardware and software upgrades. He is a CompTIA A+ certified for Computer Service Technicians and is a Microsoft Certified Solutions Expert.

Spike Barron Network Engineer and Desktop Support You can easily replace an empty laptop battery. If you can’t revive your battery, you can buy a new one for as little as $15.

Step 8

Know when to use this method. You will need to recalibrate your laptop battery if your computer battery indicator no longer displays the correct amount of charge.

For example, if your battery indicator says you have 50% charge but your computer shuts down after a short while, you should recalibrate the battery.

Charge the battery up to 100%. Keep the computer charger plugged in until the battery reaches the “full charge” point.

Unplug the laptop. Remove the charger side of the charger cable from your computer to do this.

Never unplug the wall socket side of the charger first, because plugging it back in while the charger is connected to the laptop may damage the computer.

9 Step

Run the laptop until the battery is completely dead. You can simply keep your computer running until the battery life runs out, but streaming video or running another battery-consuming process will speed up battery drain.

Leave the laptop unplugged for another 3 to 5 hours. This will ensure that the battery charge is completely gone before you proceed.

Skip this step for the lithium battery.

Image titled Revive a Dead Laptop Battery Step 13

Start charging the battery. Plug your computer charger back in to do this. Once the battery archive 100% again, it ought to be calibrated.

Do this method if your battery is running out very quickly. 

Step 1

If your laptop battery is suddenly draining faster than it used to be, performing this method once may fix the problem.

You don’t want to implement this method too often; Draining and recharging most laptop batteries frequently can reduce the overall battery life by 30%.

Step 2

Unplug the laptop. Remove your charger from the laptop’s charging port to do so.

Never unplug the wall socket side of the charger first, because plugging it back in while the charger is connected to the laptop may damage the computer.

Step 3

Run the laptop until the battery is completely dead. You can simply keep your computer running until the battery life runs out, but streaming video or running another battery-consuming process will speed up battery drain.

Step 4

Leave the laptop alone for about 3 hours. This will ensure that the battery is completely drained before proceeding.

Skip this step if you have a lithium battery.

Step 5

Start charging the battery. Plug your computer charger back in to do this.

This process will be more effective if you leave your laptop idle for as long as possible.

Step 6

Leave the battery charging for 48 hours.You can use your computer during this time, but make sure it’s plugged in for at least two days without interruption. Doing so will ensure that the battery is fully charged, which may increase the overall battery life.

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