How to fix a Ryobi battery that won’t charge

If you have worked with a cordless drill, you should have known about a Ryobi battery. A Ryobi battery is usually a lithium-ion battery that is used in almost every cordless tool. 


The most common problem with these rechargeable batteries is that they often get stuck in a sleepy mood. When in a sleep mood, they can not get charged. 


Without proper charging, they cannot function properly. This problem can happen for one of many causes. You can follow some simple instructions to avoid this problem. In this article, we are going to show How to fix a Ryobi battery that won’t charge.

Why won’t a Ryobi battery charge?

If you want to fix a Ryobi battery that won’t charge, you must first find out why it is not getting charged. Several issues can prevent the charging of a Ryobi battery. If your battery is not charging, it must not have to be a defective battery. 


There are some other causes too on which you should keep your concern. Here are some instructions on how to troubleshoot Ryobi batteries’ charging problem.

Sleep mood:

The well-known phenomenon for Ryobi lithium batteries is when they are in a sleepy mood. When you leave a Ryobi rechargeable battery for too long, the voltage inside it starts to drop. The battery lost almost all its energy during this self-discharging process.


When the battery is in a sleep mood, the battery charger cannot detect a healthy cell. That’s why it doesn’t take any risk of charging the battery. It normally happens when your battery gets below 11.9 volts. The charger warns with flashing red and green lights. Sometimes it can warn you just with a red light.

Defective charging components:

Another reason a Ryobi 18v lithium battery won’t charge is defective charging components. The charge connection between the battery and charger should be flawless. Without a proper power supply, your battery won’t work accordingly. 

An efficient current flow should be ensured from the power source to the battery. A Ryobi battery charger does this work. But defective components like the Ryobi charger or defects in the power source could hinder the process.


Temperature is another important factor that directly connects with the charging problem. Keeping it in a cool environment lowers its temperature while utilizing it raises it. Both of these will have a major impact on the battery and the charging process.


To maximize performance, the manufacturers designed the Ryobi li-ion battery to operate at temperatures between 45 and 110 degrees Fahrenheit (0 degrees Celsius to 45 degrees Celsius).  So, charging the li-ion battery above or below this range will cause a charging failure.

Dead battery


Even the best batteries will eventually run out of juice. A Ryobi lithium battery’s lifespan is determined by the number of times it is recharged. Once this number is reached, the battery is declared as a dead battery. Keep in mind that the Ryobi battery has a 2 to 4-year life expectancy on average. 


If it spends most of its time on the shelf, it may even last for 5 or 6 years. The battery may be dead if you’ve been using it for a long time. Besides, these are rechargeable batteries. So, if you leave them for a long time, you could end up with a dead battery as well. A dead battery cannot get a charge.

Battery cell problem:

A Ryobi 18 volt lithium-ion battery pack has several cells in it. A dead battery cell or defects on a single cell can cause this problem. A defective battery with a dead cell will show up as a whole dead battery unit. The charger won’t charge the battery in this situation. You can restore the bad battery by changing that individual cell, though.

How to fix Ryobi batteries? DIY Ryobi batteries troubleshooting

Finally, after finding out the exact problem, you can now search for the solutions. Don’t worry. We already found some solutions through some research. To fix your battery pack, you need to follow these How to revive dead Ryobi battery instructions:

  1. Keep an eye out for charging components:

Checking the charging components is a good first step if the battery won’t charge. Ensure that the power source is clean and functioning properly. Check your Ryobi battery charger as well. If in confusion, check the battery charger with a different battery. See if it works.


Keep an eye out for any faulty components. You should change those components as soon as you find them. Contact points and battery terminals that have been corroded are easier problems to fix. A thorough cleaning can solve this problem. You can always take a technician’s help if needed.

  1. Replace the battery if needed:

If the battery charger and other essential components are working fine then you should check if the battery is dead. Sometimes, this happens when just one cell of the battery pack becomes dead. You can use a voltmeter or multimeter to figure that out. 


Take the device and check each of the cells. The battery voltage reading above 12 volts should be fine. But reading below 11.9 volts means your battery has been discharged and is probably dead. 


If you are sure that your battery is dead you should go for a new one. But if just one cell dies in the whole battery pack, you can change that specific cell. 

  1. Maintaining an optimum temperature: 

You should always provide the optimum temperature for both the Ryobi battery and charger. Since your Ryobi battery cannot bear extreme temperature you should use it between the specific range.  


If you have used the battery for too long, you should give it a break to cool down. Again, if you have stored it at a cold temperature, you should keep the battery at room temperature. This will warm up the battery. Don’t go beyond the extreme temperature as it can harm your battery beyond repair. 

  1. Waking up the battery:

Your battery could get stuck in a sleep mood if you leave it for a longer period. In the case of your battery getting in a sleep mood, you could follow these instructions to wake your Ryobi battery pack.

First step:

You’ll need a second battery that’s in good condition and completely charged. You must verify that the healthy battery has the same battery voltage rating as the unhealthy battery. 


Connect the cells using two separate wires, but make sure that they are linked to the correct terminals (positive to positive and negative to negative). Leave them this way for a few minutes. It should wake up the battery.

Second step:

The second method is using a direct current (DC) power supply instead of a healthy battery. Connect the battery terminal as you have connected it before with the battery. Now leave the battery for several minutes. It should jump-start the Ryobi battery.

Third step: 

The last one is giving your battery a mini charge therapy. To supply a mini charge, you should connect the battery with the Ryobi charger. Now take the battery charger to the DC power source and start to connect and disconnect the port continuously. 


After some time, you should see a flashing red light and green light. Keep doing that until you see a continuous green light. Greenlight means your battery has awakened and started charging.


Ryobi tools have a rechargeable battery that can get stuck in a sleep mood or can often die on you. Don’t panic if your battery seems to be dead. A Ryobi lithium battery can refuse to charge due to some reasons.  But you can restore the battery in some simple ways, though. 


Next time, before throwing a dead cordless tool battery, give it a try. You can save a few dollars every year if you follow these simple steps. 


  • How long do RYOBI batteries last?

It depends on how you use your Ryobi tool. If it stays in your cordless drill or cordless tool and you use it regularly you should expect a 3 or 4-year battery life. But if you keep your Ryobi battery pack on the shelf, you can get 5 or 6 years on a maximum basis.

  • Can I leave my Ryobi battery in the charger?

Leaving your Ryobi battery in the charger would lead your battery to overheat. Note that your battery cannot beat extreme temperatures. So, if you leave it in the charger it can die on you. Charge it properly and remove it from the charger once the charging is complete.

  • How to revive Ryobi batteries?

Generally, you can not revive your completely dead Ryobi battery. A dead or bad battery doesn’t accept a charge. But you can revive a Ryobi battery if it stays in a sleep mood or just one cell dies in the whole pack. You can jump-start a battery from its sleep mood or change the defective cell.

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