5 Quick Fixes To Kobalt 40V Battery Not Charging - HookedOnTool (2024)

5 Quick Fixes To Kobalt 40V Battery Not Charging - HookedOnTool (1)

Kobalt is a line of mechanical and handheld power tools, as well as tool storage devices. The lineup is owned by a famous American home improvement chain, Lowe’s.

The company is quite popular in Australia as well as North America, but it has also quickly started spreading to other regions. The main reason why the products from Kobalt are so popular is mainly because of their reliability and durability.

These are known for being some of the best tools that you can get on a budget.

Fixing Kobalt 40V Battery Not Charging

Additionally, the company comes up with new products after every few years which have upgraded features. Talking about this, Kobalt recently came up with a wireless tool lineup that can be powered up using their lithium-ion battery sets.

These come in different voltage ratings that can be used to power up their tools. The 40V battery is the most standard one that you can get, and it also works with most tools.

While the Kobalt 40V battery is amazing, some people report that it is not charging. If you are running into a similar problem, then going through this article should help you out.

This is because we will be providing you with some simple reasons behind the issue as well as steps that can be used to fix them.

  1. Battery Overheating

There are several reasons why the Kobalt 40V battery that you have is not charging. Though, starting with the most common one, you should note that the battery might be overheating.

This mainly happens due to the long usage of these power tools which is why giving them some rest is crucial.

The only thing that you have to do is power off your tool while it is not being used. This allows the battery to cool down and stay at optimal levels of temperature.

If you have not been doing this, then the battery will overheat and stop working until it cools down. Luckily, the problem is not permanent as your battery will start charging once its temperature lowers down.

Waiting about 20 minutes should be enough to ensure that this issue can be fixed.

  1. Charger Overheating

5 Quick Fixes To Kobalt 40V Battery Not Charging - HookedOnTool (2)

Similar to your battery overheating, another reason behind the problem can be that the charger is overheating.

The main reason behind this is that you might have been using your charger for several hours. If this is true, then it can easily heat up and stop working.

The solution for this problem is the same as above because the only thing you need to do is wait for 10 to 20 minutes, which gives the charger enough time to cool down.

Keep in mind that this is quite simple, but you should prevent your tools from overheating at all.

This is because the high heat on the devices can cause them to get damaged. Kobalt already uses a system that shuts these tools down to prevent them from running into issues.

Though, it will be much better if you simply stop using the tool before it reaches its breaking point.

  1. Temperatures In Your Area

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While overheating can be caused due to excessive use of the tools, another reason behind it is the temperatures in your area.

These can vary greatly depending on the region you are living in as well as the season it currently is. Though, some areas often get hot summers that can be too harsh for these tools to handle.

When it comes to this, the high heat causes the battery and charger to overheat quickly, preventing them from working. The issue can be quite annoying to deal with, but you can easily avoid this by keeping the tools in a cooler area.

This can be someplace where you have an air conditioner switched on or at least a fan that can allow the battery and charger to maintain a lower temperature.

  1. Connections Might Be Clogged

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When using power tools, people should note that most of these create a lot of debris. This can easily enter the tools, which is why companies usually put guards all around them.

These can block most of the debris and dust but some of it might still enter the tool over time. Once this happens, the dust will start to gather inside the tools, causing connections to get clogged.

If this happens then your devices will stop working until you take care of the issue.

5 Quick Fixes To Kobalt 40V Battery Not Charging - HookedOnTool (5)

Luckily, the clogs can be easily removed by opening your tool and then cleaning it carefully. Make sure that you remove any dust that might be stuck on the connectors of your battery as well as the charger.

These should help in ensuring that the battery starts charging, the next time you plug it in.

  1. Lithium-Ion Battery Might Be Too Old

5 Quick Fixes To Kobalt 40V Battery Not Charging - HookedOnTool (6)

Finally, one more reason why your Kobalt 40V battery might not be charging can be that it has gotten too old. You should note that lithium-ion batteries usually tend to have a much longer shelf life compared to standard batteries.

This is because they use energy efficiently to maintain their health. However, with time, the battery continues to decrease its capacity to hold a charge.

This can vary depending on how frequently you use your batteries and how often they are charged. The more the battery is used the faster its health will run out.

This is why people need to understand that their battery might finally require a replacement. This is quite simple, but you should also note that lithium-ion batteries can be recycled.

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You can usually send these back to Kobalt and they will either provide you with a free replacement or give you a discount. Though, some third-party brands also offer the same deals when it comes to getting rid of lithium-ion batteries.

This is why you can easily go for one of these options depending on the region you are living in.

If you have further questions in mind, then feel free to contact the support team for Kobalt.

Related posts:

  1. 6 Fixes To Kobalt 80V Battery Not Charging
  2. 10 Quick Solutions To Kobalt 24V Battery Not Charging
  3. Kobalt XTR vs Kobalt Max – Better Option?
  4. 6 Ways To Get Rid Of Kobalt Battery Charger Blinking Green Issue
  5. Kobalt 80V Battery Is Not Charging? Try These 9 Fixes Now
5 Quick Fixes To Kobalt 40V Battery Not Charging - HookedOnTool (2024)


How do you get a lithium battery out of protection mode? ›

The easy answer is to charge it to bring voltage back up. But that might be a challenge if it's down to zero. Your smart charger may have no problem detecting your battery even if it's at zero volts. Or, you may need to select “force mode” on the charger.

Can lithium batteries go into sleep mode? ›

Lithium-iron batteries are sensitive to over-discharging and should not be discharged below the battery's over-discharge voltage, the voltage of the cell is usually between 2.5 and 2.75 volts at most. Manufacturers vary in how much voltage will cause the battery to go into sleep mode.

Can a completely dead lithium battery be recharged? ›

You may recharge dead lithium batteries with the right equipment. You can also use a special lithium battery charger manually by creating a charge using a few other electronic devices. However, they can be charged by using a special power adapter that includes a large percentage of the energy they can hold.

What causes a lithium-ion battery to stop working? ›

LiB lifetime is, in fact, diminished at high temperatures. This is because the electrolyte that sits between the electrodes breaks down at elevated temperatures, causing the battery to lose its capacity for Li-ion shuttling.

Is there a fuse for the lithium battery? ›

Li-ion battery packs typically consist of the battery cells and a BMS. State-of-the-art BMSs include primary and secondary protection circuitry and a battery protection fuse. The primary protection IC measures the voltage on the cells and the current going in and out of the battery.

How to troubleshoot a lithium battery? ›

Use a multimeter to measure the open circuit voltage of the battery and check whether the battery is in under-voltage protection mode. If the open circuit voltage of the battery is lower than 10V (for 12V lithium battery) or 20V (for 24V lithium battery), it means that the battery is in under-voltage protection mode.

How do you manually charge a lithium ion battery? ›

The DC power supply's positive and negative terminals must be connected to the battery's positive and negative terminals, respectively. Connect the DC power adapter to a power source and wait for the charging process to begin. Once that's completed, you can swap out the standard battery for a Li-ion one.

Why is my rechargeable battery not charging? ›

The problems could include a dead battery, wiring issues, or improper placement on the charger. However, lithium batteries require a deeper check before you start utilizing them. They have a higher chance of becoming damaged, and then they will stop charging.

What is self-discharge of lithium batteries? ›

A lithium-ion battery typically self-discharges at a rate of about 5% per month, depending on the type and temperature of the battery. This self-discharge rate can be reduced by maintaining the battery storage voltage above the minimum voltage and storing the battery at lower temperatures.

How do you wake up a sleeping lifepo4 battery? ›

Using an Adjustable Power Supply:

If you have an adjustable power supply, set it to approximately 14 Volts and connect it to the battery. This makeshift charger will kickstart the battery, allowing the regular charger to take over.

How to activate a lithium-ion battery? ›

The Correct Use of New Lithium Batteries

At this time, the capacity is lower than the normal value, and battery life is also shortened. But the lithium battery is easy to activate, 3-5 normal charge and discharge cycles can activate the battery and restore normal capacity.

How do you put out a lithium battery fire at home? ›

Lithium-metal batteries on the other hand require a Class D fire extinguisher. Water interacts with lithium. If a Class D extinguisher is not available to douse a lithium-metal fire, only pour water to prevent the fire from spreading.


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