Dewalt is one of the world’s best power tools and accessories manufacturers. However, when you purchase a new Dewalt drill, you want to know how long its battery will last. So, what is the life span of Dewalt drill batteries?

Typically, a Dewalt drill battery can last 3-6 years. However, this depends on factors such as the operating temperature, charging and discharging behavior, type of battery, and usage frequency. Besides, how you care for your Dewalt drill battery can also affect its lifespan.

Keep reading as we will break down the lifespan of Dewalt drill batteries and how to make them last longer. We will also discuss how long a Dewalt drill battery last on a full charge and how long it takes to charge a Dewalt drill battery fully.

How Long Will a DeWalt Drill Battery Last?

DeWalt drill batteries use high-quality lithium-ion cells, which last longer than low-quality cheap drill batteries.

Under normal conditions, your DeWalt drill battery will last 500 – 800 life cycles or 3 – 6 years.

However, the overall battery lifespan depends on many factors, such as;

  • The operating temperature
  • Charging and discharging behavior
  • Usage frequency or workload
  • Type or quality of DeWalt drill battery
  • Maintenance and care
  • Storage

You can get a longer life span from your DeWalt drill battery by following some essential tips.

How to Make Your DeWalt Drill Battery Last Longer

How long your DeWalt drill battery last largely depends on how and where you store it and how well you take care of it.

Keep Your DeWalt Drill Battery in a Cool, Dry Place

You can use tool chests, hooks, racks, or anything else your DeWalt battery will fit in.

However, ensure it is a cool, dry place since moisture can damage the battery.

Never Leave your DeWalt Drill Battery Hooked to the Charger

Leaving it connected to the charger for too long can “overcharge” it, damaging the battery and shortening its lifespan.

Always Charge your DeWalt Drill Battery Fully Before Using It

If you want your DeWalt drill battery to hold a full charge for a longer time, it is always recommended to charge it fully before you use it.

Always Use Your Dewalt Drill Battery Until it Needs Recharging

The Dewalt battery will continue holding practically the same charge level for a longer time if you wait until it requires to be recharged to charge it.

How Long Will a DeWalt Drill Battery Last on a Full Charge?

Typically, you can expect a fully charged DeWalt drill battery to last anywhere between 25 minutes to 4 hours.

The table below will help you better understand the runtime of the DeWalt drill battery.

Dewalt Battery Output Power RatingRuntime on a Single Full Charge
Dewalt 20v 1.5Ah27 minutes for medium to heavy-duty tasks
Dewalt 20v 1.7Ah39 minutes for medium to heavy-duty tasks
Dewalt 2.0Ah43 minutes for medium to heavy-duty tasks
Dewalt 3.0Ah56 minutes for medium to heavy-duty tasks
Dewalt 4.0Ah1 hour 19 Minutes for medium to heavy-duty tasks
Dewalt 5.0Ah1 hour 39 minutes for medium to heavy-duty tasks
Dewalt 6.0Ah2 hours 06 minutes for medium to heavy-duty tasks
Dewalt 8.0Ah2 hours 38 minutes for medium to heavy-duty tasks
Dewalt 9.0Ah3 hours 08 minutes for medium to heavy-duty tasks
Dewalt 10.0Ah3 hours 31 minutes for medium to heavy-duty tasks

However, you can get more runtime by using your DeWalt battery on light-duty tasks.

Factors Affecting DeWalt Battery Runtime

The total runtime of your DeWalt drill battery depends on various factors and can vary from one situation to the other.

Some of the common factors include;

  • DeWalt drill battery size or capacity
  • Type of work you are using the battery for
  • The operating temperature of the battery
  • Run-cycles vs. runtime
  • Brushless vs. Brushed motor
  • Condition of the Dewalt cordless tool

Do note that not using it continuously will give you more runtime.

How Long Does it Take to Charge a DeWalt Drill Battery Fully?

The amount of time required to charge a DeWalt drill battery entirely depends on the type of DeWalt battery and the type of charger being used.

For instance, a Dewalt drill battery fast charger will take  30 to 40 minutes to charge a 2Ah, 3Ah, 4Ah, and 5Ah 20volts DeWalt battery.

A 6Ah Dewalt drill battery will take 40 – 45 minutes to charge. At the same time, an 8Ah and 9Ah Dewalt drill battery will take up to 90 minutes to charge.


DeWalt drill batteries can last 3-6 years if you take care of them properly.

To ensure the most extended lifespan, store it in a cool, dry place.

Make sure you charge it only when it dies, and then bring it back to full power before using it again.

Also, avoid leaving it hooked to the charger.

With all the information in this article, you should be ready to make your DeWalt drill battery lasts a long time!