How to Revive a Dead Laptop Battery
Electronics are not built to last forever, but not all people can afford to buy a new laptop or new battery when the battery in their laptop starts to go bad. But luckily, there is a tried and true method to restore your dead battery to like-new condition.
Note: This should only be done with a battery that will not hold a charge at all. If the battery holds a charge, just not for very long, this method is not advised as it likely won't have any affect and may cause some damage to a working battery.
- Discharge your battery as much as possible. Turn on your laptop, but leave it unplugged, so that it is operating only on battery power. When it shuts itself down due to the battery being dead, you're ready to go.
- Remove the battery from your laptop. In most cases, the battery is on the bottom of the laptop on the back side and will slip out easily. Your laptop may have a switch that locks the battery into place - if it does, hold the switch to "unlocked" with one hand while you remove the battery with the other.
- Place your battery into a ziploc bag. Remove as much air as possible from the bag and seal it. If you do not have a bag big enough for your battery, you can use cellophane wrap, but it's important to make sure it's well-sealed. Using several layers is recommended in alternating directions to make sure it's fully sealed.
- Place the sealed bag into your freezer. It's recommended to do for at least 24 hours, but leave it in there for a couple of days if possible.
- Remove the bag from the freezer and allow the battery to return to room temperature. Keep an eye on the battery while it's temperature is rising, and be sure to wipe off any conensation that may appear.
- Put the battery back into your laptop, and plug your laptop in. Allow the battery to get a full charge before using your laptop. You should see a longer battery life right away, but you may have to let the battery run out and give it a full charge again.