How to Restore Phone Battery

This is an article that provides you with several ways to deal with a phone battery that is no longer working. If the battery dies, you can remove it and clean the phone’s battery tray (and battery) with a clean microfiber cloth. If this doesn’t work, wrap the battery in plastic wrap and put it in the freezer for a few days. The last solution is to use a 9V battery to activate the damaged phone battery.

Table of Contents

Clean the battery tray

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Remove the battery from the phone. You will have to open the back cover of your phone to remove the battery.

If you use an iPhone, see the iPhone battery replacement guide for how to remove the battery.
Likewise, you can see the battery replacement guide for some Samsung Galaxy phones.
For detailed Android battery information and battery removal instructions, you should consult the manufacturer’s website or manual.

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Wipe the dirt inside the battery tray. This is where you removed the battery. You need to use a dry cloth, as wet wipes can damage the phone.

Tips: Use a clean microfiber cloth to wipe.

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Clean the dust on the battery. Again, you should not use water to avoid damaging the battery.

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Insert the cleaned battery into the phone.

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Power on the phone. Cleaning the dirt can restore the battery and get the phone working again.

Freeze battery

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Remove the battery from the phone. You will have to open the back cover of your phone to remove the battery.

If you use an iPhone, see the iPhone battery replacement guide for how to remove the battery.
You can also see instructions on how to remove the battery of some Samsung Galaxy phones.
For detailed instructions for Android, you should see the manufacturer’s website or manual.

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Wrap the battery with paper or plastic wrap. Batteries must be sealed to prevent water or other liquids.

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Place the battery in a resealable plastic bag. Make sure the battery is not affected by ice, water and any other wet surfaces in the freezer.

Batteries will inevitably fail when wet; so you remember to wrap it carefully so that the battery is not waterproof.

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Place the tightly wrapped battery in the freezer.

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Leave the battery in the freezer for about 3 days. Leaving the battery in a low temperature for a period of time helps the battery to recharge slightly and have enough power to charge it with a regular charging cord.

Note: If you’re in a hurry, you can try freezing the battery for about 12 or 24 hours instead of 3 days.

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Remove the battery from the freezer after 3 days. When it’s time to try and test the battery, take it out of the freezer and remove the wrapper.

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Dry the moisture on the battery. If the battery has some moisture, be sure to dry the battery carefully.

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Place the battery at room temperature for about 1 day. Here’s how to get the battery to return to normal temperature.

If this doesn’t work, you can also try drying out the moisture on the battery and attaching a cold battery to the device.
Remember not to expose the battery to direct sunlight, or the battery will be damaged.

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Insert the battery into the back of the phone. Do not rush to power on the phone right now.

The phone needs to be charged with a regular charging cord before powering on.

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Charge your phone with a regular charging cord. You will use a regular charging cord to charge your phone before turning it on. Charge your phone for at least 48 hours before turning it on.

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Turn on the phone. After 48 hours of charging your phone, you’ll turn on the phone and check the battery to see if the freezing method worked. Now, perhaps your battery is restored and has a little more power.

Click the battery

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Prepare the necessary things to activate the battery. Here’s what you need to trigger a dead battery:

One 9 volt battery
Electrical tape
2 wires: ordinary thin wire, it’s better to use red (+) and black (-).
Please handle electrical circuits carefully. If you don’t know what to do, you should choose safety instead of creating an unfortunate incident. Excessive heating of the battery or improper connection is extremely dangerous and may even explode the battery.

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Remove the battery from the phone. You will have to open the back cover of your phone to remove the battery.

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Connect and stick a wire to the positive (+) terminal of the 9-volt battery. The anode is the small hole at the top of the 9 volt battery. Place one end of the wire here and apply electrical tape to secure the connection.

You can see a ” + ” sign at the positive terminal of the battery.

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Connect and stick the other wire to the negative (-) terminal of the 9 volt battery. The cathode is the big hole at the top of the 9-volt battery. Remember to make a strong connection and use electrical tape to attach the second wire here.

You can see a ” – ” sign on the negative terminal of the battery.

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Find the positive (+) and negative (-) terminals of the phone battery. These two terminals are usually marked ” (+) ” and ” (–) ” on the battery tray.

If you cannot distinguish the positive or negative terminals on your phone battery, refer to the information in the manufacturer’s manual or consult a professional electrician.
Most cell phone batteries have more than two electrical connectors; choose to use electrical connectors that are either farthest apart or outside. Do not use electrical connectors in the middle.

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Connect the positive wire to the positive (+) terminal of the phone battery. Attach the other end of the wire connected to the positive terminal of the 9 volt battery to the positive (+) terminal of the phone battery.

Be sure to use two separate or split-ended wires for each electrical connector.
Do not connect the positive and negative terminals of each battery together.
Do not connect opposite poles (positive to negative), as this will short-circuit the phone battery and cause damage or may even cause a small explosion.

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Connect the negative wire to the negative (-) terminal of the phone battery. You will glue the other end of the negative wire that is being attached to the negative terminal of the 9 volt battery to the negative (-) terminal of the phone battery.

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Stay connected for 10 to 60 seconds. That way, you’ll have enough time to activate and charge the battery in no time.

Remember to check the battery every 10 seconds and make sure it doesn’t overheat.

Note: You can disconnect when the phone battery starts to warm up.

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Unplug the phone battery. When the battery feels warm, you can remove all the wires.

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Insert the battery into the phone. Remember to insert the battery into the tray correctly.

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Turn on the phone. After activating the battery with a 9V battery, try to check if the phone can power on and see the battery capacity to know the charging capacity of the battery.

You can now try to charge your phone using a regular charging cord.

Battery Calibration

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Use up the battery. You will use the phone until the battery runs out and the phone automatically turns off.

Calibrating your phone’s battery is useful when your phone has a short charge time and runs out of battery quickly.

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Try powering on the phone. After the phone automatically powers off, you will power it on and let the phone power off automatically with the little battery left.

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Connect your phone to a power source. Your phone will be charged right away.

Do not power on the phone after it is connected to a power source.

Tip: If your phone turns on automatically after being charged for a while, be sure to turn off the phone.

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Wait until the phone is fully charged. If you see the battery shown on the screen, you’ll know when the phone is 100% fully charged. Otherwise, you will wait from 1 to more than 6 hours for the phone to fully charge.

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Power on the phone. When the phone is fully charged, simply press the power button to turn on the phone.

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Restart the phone. After the battery is fully charged, remember to restart your phone to apply the new settings.

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Remove the charging cord. Your battery is now recalibrated and has longer battery life.

Warning

Do not connect the phone battery to the 9 volt battery for too long, as this may cause an explosion.
Do not attempt to charge your phone with a 9-volt battery, as the phone battery may burn or even explode. This method should be used to recover and activate dead batteries.
Don’t leave your phone in the freezer for too long. You should keep in mind that temperatures that are too high and too low can both damage the battery.

Advice

If you have problems with the battery, try a different charging cord first. Sometimes the cause may be a damaged charging cord, not the battery.
When placing batteries in the freezer, make sure the plastic bag is tightly closed and that the battery is kept away from food to prevent contamination from leaking batteries.
If you choose to use the freezer method, be sure to mark this as a battery bag so that others don’t mistake it for food.

Steps

Clean the battery tray

Freeze battery

Click the battery

Battery Calibration

Warning

Advice

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