How to Revive Dead Cordless Drill Battery: Easy Steps for Restoring Your Power Tool’s Performance

how to revive dead cordless drill battery

Have you ever experienced the frustration of having a cordless drill battery that simply won’t hold a charge anymore? It’s a common problem that many DIY enthusiasts and professionals face over time. The good news is that with a little bit of effort and the right approach, it’s possible to revive a dead cordless drill battery and get it working like new again. Not only will this save you money by avoiding the need to purchase a new battery, but it can also be a great way to extend the lifespan of your cordless drill overall.

In this blog, we’ll explore some tried and tested methods for reviving a dead cordless drill battery, so you can get back to tackling your DIY projects in no time.


Are you tired of having to replace your cordless drill battery every time it dies? Fear not, as there are ways to revive dead batteries and save yourself some money. The process involves a few steps but is simple enough for anyone to follow. First, you need to discharge the battery completely by using it until it no longer works.

Once it’s completely drained, you can start the reconditioning process. This involves charging the battery to its maximum capacity and then letting it sit for a few hours. Afterward, discharge it again and repeat the charging process a few times until it reaches its full potential.

It’s important to note that not all batteries can be revived, but it’s definitely worth a try before splurging on a brand new battery. So, let’s get cracking and revive that old cordless drill battery today!

What causes cordless drill batteries to die?

Cordless drill batteries are essential for completing any DIY project, but they can also be a big pain when they die unexpectedly. So, what causes these batteries to die? Well, there are a few reasons why this might happen. First and foremost, overcharging can lead to premature battery failure.

This is because overcharging causes the battery to be constantly exposed to high levels of electricity, which can damage it over time. Similarly, undercharging can also be a problem, as this leaves the battery without enough power to function properly. Additionally, exposure to extreme temperatures can cause the battery to deteriorate, as can physical damage.

Regular maintenance, such as properly storing and charging the battery, can help prolong its life. Ultimately, the life of a cordless drill battery will depend on a variety of factors, and it’s important to take proper care of the battery to ensure it lasts as long as possible.

how to revive dead cordless drill battery

Why revive a dead cordless drill battery?

If you’re wondering why anyone would bother reviving a dead cordless drill battery instead of just replacing it, there are several reasons. First and foremost, it’s more eco-friendly to revive a battery than to throw it away and contribute to electronic waste. Additionally, reviving a battery can save you money in the long run, as buying a new battery every time your old one dies can add up.

Plus, if you already have a cordless drill that you like and are comfortable using, it’s more convenient to simply revive the battery than to switch to a new tool altogether. By following some simple steps, such as checking the connections, charging the battery properly, and using a battery desulfator, you can often bring a dead battery back to life. So before you toss out your dead cordless drill battery, consider reviving it instead – it just might be worth the effort.

Tools and Materials Required

Reviving a dead cordless drill battery isn’t as challenging as some might think. A few tools and materials are required to complete the task. Firstly, safety gear such as goggles and gloves must be worn to prevent any physical harm.

Secondly, a multimeter is needed to check the voltage of the battery. A battery charger is preferred to recharge the battery, and Epsom salt, distilled water, and a syringe are required to make the electrolyte solution. Finally, a screwdriver or a pry tool is required to open the battery casing.

With these tools and materials, one can easily revive a dead cordless drill battery using a simple DIY method.


When it comes to working on electrical circuits and appliances, having a multimeter on hand is essential. This tool allows you to test voltage, resistance, and current to identify any issues or malfunctions. To use a multimeter, you’ll need a few tools and materials, including the multimeter itself, test leads, and batteries.

Ensure that you have the correct type of multimeter for the job, as some are designed for specific types of circuits. You may also want to have spare fuses on hand to replace any that may blow during testing. Additionally, make sure you have a safe and stable workspace, and remember to wear protective gear such as gloves and goggles when necessary.

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With these tools and materials, you’ll be able to use a multimeter confidently and effectively to diagnose and repair electrical issues.

Battery Charger

One of the essential tools to have when dealing with electronic devices is a battery charger. You never know when your devices will need a recharge, and having a battery charger handy ensures that you can keep your devices up and running all the time. Some basic tools you’ll need include a multimeter, wire strippers, a soldering iron, and heat shrink tubing.

You’ll also need some materials like a battery charger kit, a power supply, and a battery holder. The multimeter is used to measure voltage and ensure that the battery charger is functioning optimally. The wire strippers will help you strip insulation off wires, making it easier to solder the wires together.

When soldering the wires, a soldering iron comes in handy as it will create a strong bond between the wires and prevent any electrical shorts. Lastly, heat shrink tubing will protect your wires from abrasions and any external damage. With these tools and materials, you can easily make and repair battery chargers for your electronic devices.

Safety gear (gloves, goggles, etc.)

When it comes to DIY projects, safety should always be a top priority. This means investing in proper safety gear, such as gloves and goggles. Gloves help to protect your hands from sharp objects and potential injury, while goggles can prevent debris or chemicals from getting into your eyes.

It’s important to choose the right kind of safety gear for your specific project. For example, if you’re working with chemicals, you’ll want to invest in chemical-resistant gloves and goggles. Additionally, ensure that your safety gear fits properly and is comfortable to wear for extended periods of time.

Remember, your safety should always come first, so don’t skimp on the necessary equipment.

Replacement cells (optional)

If you’re planning to replace cells in your electronic device, there are a few tools and materials you’ll need to have on hand to make the process as smooth as possible. First and foremost, you’ll need the replacement cells themselves. These can typically be found online or at certain electronic stores.

It’s important to make sure you have the correct size and type of cell for your device, as using the wrong kind can lead to damage or malfunction. Additionally, you’ll need some basic tools like a screwdriver and possibly a soldering iron (depending on the device and the type of cells you’re replacing). It may also be helpful to have a pair of tweezers or pliers for handling small parts.

Before beginning the replacement process, make sure you have a clean and well-lit workspace with plenty of room to work. With the right tools and materials, replacing cells in your electronic device can be a relatively simple and straightforward task.

Step-by-Step Revival Process

If you’ve ever had a cordless drill battery die on you in the middle of a project, you know how frustrating it can be. But instead of throwing it out and buying a new one, you can actually revive that dead battery yourself! Here’s a step-by-step process to revive your dead cordless drill battery: Check the voltage: Using a multimeter, check the voltage of your battery.

If it’s reading less than 10 volts, you may be able to revive it. Charge the battery: Use a compatible charger to charge the battery fully.

This will take several hours, so be patient. Discharge the battery: After it’s fully charged, use the battery on a low-power tool until it’s drained completely.

Repeat the charging and discharging process: Do this at least three times, charging the battery fully and then discharging it completely.

Check the voltage again: Use the multimeter to check the voltage again. If it’s still reading less than 10 volts, you may need to repeat the charging and discharging process a few more times.

Store the battery: Once it’s fully revived, store your battery properly to maintain its life. Keep it in a cool, dry place and use it regularly to maintain its charge. By following these simple steps, you can revive your dead cordless drill battery and save money in the process.

Step 1: Safety First

When it comes to reviving a car that has been left inactive for a while, safety should always come first. Before attempting any kind of restoration, it’s crucial to inspect the vehicle for any signs of damage or wear and tear. Make sure to wear appropriate safety gear, such as goggles, gloves, and sturdy shoes.

This kind of project can be risky, and you don’t want to put yourself in danger. It’s also important to have a well-ventilated workspace, as fumes from the car can be toxic. Before starting the engine, check the battery for any corrosion or leaks and ensure that the fuel system is free of blockages.

By following these simple safety measures, you can prevent any accidents and ensure a smooth restoration process. Always remember to prioritize your safety, so that you can enjoy the fruits of your labor without any unnecessary risks.

Step 2: Check the Voltage

When it comes to reviving a dead car battery, checking the voltage is an essential step in the process. You will need a digital multimeter to measure the voltage of the battery accurately. Start by turning off the ignition and all electrical components, including lights and radio.

Then, connect the red cable of the digital multimeter to the positive terminal of the battery and the black cable to the negative terminal. Make sure the cables are securely attached and take note of the reading on the multimeter. If the voltage is less than 1

4 volts, this means that the battery is severely discharged, and it may need to be replaced. However, if the voltage is above 14 volts, then the battery may be able to be revived with a few other steps.

Don’t forget to wear gloves and safety glasses while handling the battery, and always keep a fire extinguisher nearby as a precaution.

Step 3: Disassemble the Battery

After disconnecting the battery and letting it cool down, it’s time to carefully disassemble the battery. This step requires caution and precision as batteries can be dangerous if not handled properly. First, remove any covers or casing that may be present on the battery.

Next, use a screwdriver or pry bar to carefully open the battery casing and expose the individual battery cells. Once the battery is open, inspect it for any signs of damage or leakage. If you notice any damage, it’s best to stop the revival process and dispose the battery safely.

However, if there is no damage, proceed to the next step in the revival process. This step is crucial as it allows you to identify any potential issues and ensure that the battery is in a condition to be revived successfully. By doing so, you can extend the life of your battery and avoid any costly replacements.

Step 4: Conduct a Capacity Test

Once you have identified the right backup solution for your system, it is crucial to conduct a capacity test to determine if it can handle the volume of data. This will help you identify any bottlenecks before they cause problems with your system. The best way to conduct a capacity test is to simulate a real-world scenario that mimics peak usage.

This will give you an accurate picture of how your backup solution performs. It is essential to monitor the test closely and be prepared to make adjustments if needed. Without proper testing, your backup solution may not be able to handle your data demands when the unexpected happens.

Therefore, it is critical to conduct regular capacity tests to ensure your system is always up to the task.

Step 5: Recharge the Battery

After following the earlier steps of the battery revival process, the next step is to recharge the battery. Before you plug in your charger, make sure the battery connections are clean and well-maintained. Dust and dirt can accumulate on the battery terminals, preventing a proper connection.

Use a wire brush or sandpaper to clean the terminals thoroughly, ensuring that the battery charger can charge the battery correctly. Once you’ve cleaned the terminals, connect the charger to the battery and leave it on for the recommended time. It’s crucial that you do not overcharge the battery, as this can cause irreversible damage.

Always follow the manufacturer’s instructions on how long to leave the charger on, and check the battery periodically during the charging process to ensure it doesn’t overheat or overcharge. With patience and proper care, you can successfully recharge your battery and get back on the road in no time.

Step 6: Reassemble the Battery

After successfully replacing the damaged cells, it’s time to reassemble your laptop battery. But before that, make sure that the new cells are correctly placed and screwed tightly on the pack. Place the battery board back and attach the terminals carefully.

Then, snap the plastic cover and make sure that it sealed correctly and no visible gaps are left. Finally, screw the screws back in place, and you’re done! Congratulations, you have revived your laptop battery back to life. However, soon after, you should charge it to full and let it discharge completely.

This helps your laptop battery calibrate and recognize the new cells, allowing it to function optimally. Remember to store it at non-extremes temperatures and avoid overcharging it. Maintaining your laptop battery’s condition will ensure that your laptop’s performance will stay at its best.

Alternative Solutions

If your cordless drill battery is dead and you don’t want to spend money on a new one, there are a few alternative solutions you can try. One method is to bring it back to life by jump-starting it with a car battery. First, attach a red jumper cable to the positive terminal of the car battery and the positive terminal of the dead drill battery.

Next, attach a black jumper cable to the negative terminal of the car battery and the metal part of the drill body. Let it charge for a few minutes before trying to use it. Another option is to try a battery reconditioning kit, which uses chemicals to revive the battery’s cells.

These kits can be found online or in hardware stores. Keep in mind that not all dead batteries can be revived, so it’s important to try these alternatives at your own risk. Remember to recycle any dead batteries properly to protect the environment.

Replacing the Cells

If you’re experiencing issues with your cell battery, you may think the only solution is to replace the battery or the entire phone. However, there are a few alternative solutions to try before spending money on a new device. One option is to recalibrate your battery, which involves draining the battery completely and charging it back up.

This can reset the battery’s sensors and improve its performance. Another option is to adjust your device’s settings to reduce its battery usage, such as lowering the screen brightness or turning off background app refresh. Additionally, you can try replacing the battery yourself rather than buying a new phone.

Many online tutorials can guide you through the process. By trying these alternative solutions, you may be able to extend the lifespan of your cell battery and save money in the long run.

Recycling the Battery

When it comes to batteries, recycling is always a hot topic. Traditional batteries, such as those found in single-use alkaline batteries, can be recycled through various programs. However, rechargeable batteries, such as those found in electric vehicles or consumer electronics, require more careful treatment.

Luckily, there are alternative solutions emerging for recycling these batteries. One such example is pyrometallurgical recycling, which involves heating the battery to high temperatures to separate the metals. Another approach is hydrometallurgical recycling, which uses chemicals to dissolve the metals.

Both of these methods have their pros and cons, but they offer hope for a more sustainable future for battery recycling. As the demand for rechargeable batteries continues to grow, it’s vital that we find ways to responsibly dispose of them. By utilizing these alternative solutions, we can reduce waste and keep valuable resources in circulation.

Conclusion and Final Thoughts

In conclusion, reviving a dead cordless drill battery is a simple and cost-effective solution that can save you both time and money. Whether it’s using a multimeter to test the voltage or giving it a good old-fashioned smack, there are plenty of DIY tactics at your disposal. So don’t let a dead battery stop you from taking on your next big project.

With the right tools and know-how, you’ll have that drill back up and running in no time! And remember, it’s always better to revive than replace – both for your wallet and the environment. Happy drilling!”


What causes a cordless drill battery to die?
Cordless drill batteries can die due to overuse, heat, and old age.

Is it possible to revive a dead cordless drill battery?
Yes, it is possible to revive a dead cordless drill battery. There are several methods to revive a dead battery, including freezing and jump-starting.

How can I jump-start a dead cordless drill battery?
You can jump-start a dead cordless drill battery by connecting it to a fully charged battery and allowing the dead battery to charge for a few minutes.

Can freezing revive a dead cordless drill battery?
Yes, freezing can revive a dead cordless drill battery. By freezing and thawing the battery, you can break up the sulfate crystals that may have formed, which can help restore the battery’s power.

What is the average lifespan of a cordless drill battery?
The average lifespan of a cordless drill battery is 2 to 3 years. However, with proper maintenance and storage, the battery can last up to 5 years.

How can I extend the lifespan of my cordless drill battery?
You can extend the lifespan of your cordless drill battery by storing it in a cool, dry place, charging it regularly, and avoiding overcharging or undercharging.

Is it better to repair or replace a dead cordless drill battery?
It depends on the cost of the repair and the age of the battery. If the battery is relatively new and the cost of repair is minimal, it may be worth repairing. However, if the battery is older, it may be more cost-effective to replace it with a new one.

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