Cordless tools are a great addition to your tools collection because of their numerous benefits. While they are many advantages to giving up the gas tank, they can be a few moments when you might rethink that decision.


Batteries do fail over time, and it can be as a result of several reasons, user or manufacturer. Some causes are simple to troubleshoot while others require replacing either the battery or unit.

Basic troubleshooting

Sometimes the problem can be a simple fix. Before returning the battery, it can be helpful to troubleshoot through the process of elimination. You can do so by asking a few simple questions:

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Is the battery properly inserted into the tool? A tool won’t work unless the battery is properly inserted. Most batteries will have a catch and release button. When inserted properly you will hear a clicking sound.

Are the contacts clean? Likewise, a tool won’t work if the battery contacts are blocked by debris or other objects. Therefore, it is just as important to brush away any debris on the battery or tool contacts. Removing and reinserting the battery may also work in some cases.

Is the battery charged? Maybe you forgot to insert the battery fully into the charging port or forgot to charge it period. Most modern batteries will come with a battery gauge so you can get an idea of how much battery power is left.

Extreme temperatures

Most cordless tools’ batteries will not function appropriately in extremely cold or hot temperatures. Most modern charges have a fail-safe that prevents you from charging them.

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Greenworks 40v

When working outdoors in cold temperatures a simple solution would be to place the battery inside your home where the temperature is warmer. On the other hand, if you are away from your home, you can place the battery in your vehicle with the heater on.

Storing Batteries

When storing batteries manufacturers recommend charging them between 40 to 60 percent. Never leave the batteries in the charger after they have fully charged.

Additionally, you should avoid storing batteries outside. Doing so can expose the battery to extreme heat, cold, rain, and other elements. All of which may cause failures or degrade battery performance over time. Instead, storing them in a secure location such as a shed or even sealable storage bins would work.

Final thoughts

If you have tried everything and the tool still won’t work then the fault might be either a faulty tool, battery, or even charger. Using a backup or replacement battery is the next step in finding out which one is at fault. A new battery should come with a charger thus eliminating that as cause.

Green works 40v battery 4.0Ah
Green works 40v battery 4.0Ah

Make sure it’s fully charged and installed in the tool properly. If the unit fails to come on then you know without any doubt it’s the tool. Most tools come with a separate warranty for the battery and tools. Lastly, always read the manual that comes with your tools. Proper usage will vary depending on the brand of the unit.

In this video, I’ll explain more about the topic and other possible causes of battery malfunction.