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DeWalt Flexvolt Battery

DeWalt is a globally recognized brand, well known for its high-quality power tools and accessories. Among these offerings, the Flexvolt battery is one of the most influential innovations in cordless tool technology, with advanced features and compatibility that has revolutionized the power tool industry. This guide will help you understand what the DeWalt Flexvolt battery is, its benefits, and factors to consider when purchasing one.

What's DeWalt Flexvolt Battery

DeWalt introduced the Flexvolt battery system in 2016, which has effectively bridged the gap between corded and cordless tools. Unlike conventional batteries, the Flexvolt system automatically adapts to the tool's voltage requirements. It operates at 60V when used with Flexvolt tools and reverts to 20V when used with older DeWalt tools. This flexibility allows users to power a broad range of tools from a single battery source.

Benefits of the DeWalt Flexvolt Battery

  • Unrivaled Power and Performance: The Flexvolt system provides a power output comparable to corded tools, enabling cordless tools to handle heavy-duty applications traditionally reserved for corded tools. Even demanding tasks like cutting, drilling, and grinding become significantly more manageable with the Flexvolt system.
  • Versatility: Flexvolt batteries are compatible with all 20V MAX*, 60V MAX*, and 120V MAX* tools, providing exceptional versatility. They can be used interchangeably between many tools, minimizing downtime and costs associated with maintaining multiple batteries and chargers.
  • Improved Run Time: Flexvolt batteries deliver extended run times, reducing the need for frequent recharging and increasing productivity. They can last up to four times longer than standard 20V MAX* batteries, depending on the tool and application.
  • Durability: Designed for professional use, Flexvolt batteries are built to withstand the rigors of demanding jobsites. They feature a durable construction and advanced battery technology that promotes a longer life and consistent power.

Factors to Consider When Buying a DeWalt Flexvolt Battery

When you're shopping for a DeWalt Flexvolt battery, it's crucial to consider the following factors:

  • Battery Capacity: Measured in amp-hours (Ah), the battery capacity signifies the amount of charge a battery can hold. A higher Ah rating means a longer run time. Flexvolt batteries come in several capacities, such as 6.0Ah, 9.0Ah, and 12.0Ah, allowing you to pick the best one for your specific needs. If you're undertaking heavy-duty tasks or using power-hungry tools, a higher capacity battery may be the best choice.
  • Compatibility: While all Flexvolt batteries are compatible with DeWalt's 20V MAX* tools, not all tools are designed to handle the power of 60V or 120V. Always check the voltage requirements of your tools when purchasing a new battery to ensure compatibility.
  • Number of Batteries Needed: For heavy-duty tasks or continuous use, having multiple batteries can be advantageous. Some Flexvolt tools, particularly 120V MAX* tools, require two Flexvolt batteries to operate. Additionally, having spare batteries allows you to work continuously while others are charging.
  • Charger: Not all DeWalt chargers can charge the Flexvolt battery. Ensure you have a compatible charger that can handle the power and capacity of the Flexvolt battery. DeWalt offers multi-port chargers that can charge multiple batteries simultaneously, reducing downtime.
  • Cost: Flexvolt batteries are more expensive than standard DeWalt batteries due to their advanced technology and versatility. However, they can be more cost-effective in the long run because they're compatible with a wide range of tools, reducing the need to buy individual batteries for each tool.
  • Warranty: DeWalt offers a three-year limited warranty on their Flexvolt batteries, providing peace of mind for your investment. Always register your product with DeWalt to activate the warranty.

Our Top Picks 2023

1. DeWalt DCB609-2 20V/60V MAX FLEXVOLT 9.0Ah Battery, 2 Pack

DeWalt DCB609-2

The DeWalt DCB609-2 is a pack of two 9.0Ah batteries offering dual voltage for ultimate flexibility. As a 20V MAX* battery, it provides up to 6X runtime when used with DeWalt 20V MAX* tools. When switched to 60V MAX*, it delivers unmatched power for heavy-duty applications.

The batteries feature an LED display that shows the state of charge, helping users to manage their work better. In addition, they can operate in extreme conditions, ranging from 0 to 40 degrees Celsius, thanks to DeWalt's patented technology. These batteries will serve you well for extended periods due to their durable construction and high energy capacity.

2. DeWalt DCB606-2 20V/60V MAX FLEXVOLT 6.0Ah Battery, 2 Pack

DeWalt DCB606-2

The DeWalt DCB606-2 pack offers two 6.0Ah batteries, ideal for medium-duty applications. It's an excellent option for those who don't need the high capacity of the 9.0Ah model, but still want the flexibility and power of the Flexvolt system.

Like the 9.0Ah model, this pack can also switch between 20V and 60V, providing the right amount of power needed for the task at hand. It also features an LED charge display and is designed to withstand harsh conditions, making it a reliable power source for your tools.

3. DeWalt DCB612 20V/60V MAX FLEXVOLT 12.0Ah Battery

DeWalt DCB612

The DeWalt DCB612 is the high-capacity king in the Flexvolt lineup, offering a whopping 12.0Ah capacity. It's suitable for the most demanding tasks, providing extended runtime and power. It's perfect for those heavy-duty applications where you need continuous, reliable power.

Like the other Flexvolt batteries, the DCB612 can switch between 20V and 60V, depending on the tool and task. It also features the same LED charge display and robust construction, ensuring it can withstand the rigors of demanding use.


While all Flexvolt batteries offer impressive performance and flexibility, the best battery for you depends on your specific needs.

If you need a battery that can handle heavy-duty applications, the DeWalt DCB612 20V/60V MAX FLEXVOLT 12.0Ah Battery is your best choice. With its high capacity, it provides extended runtime and power, making it perfect for demanding tasks.

For medium-duty applications, the DeWalt DCB606-2 20V/60V MAX FLEXVOLT 6.0Ah Battery, 2 Pack is a fantastic choice. It offers a good balance between capacity and price, making it an excellent option for most users.

Lastly, if you need a battery with high capacity but don't need the extreme power of the 12.0Ah model, the DeWalt DCB609-2 20V/60V MAX FLEXVOLT 9.0Ah Battery, 2 Pack is a great option. It offers up to 6X runtime when used with DeWalt 20V MAX* tools and provides unmatched power when switched to 60V MAX*.

Ultimately, the DeWalt Flexvolt battery system offers a solution for every type of user, from the casual DIY enthusiast to the professional contractor. By considering your specific needs and budget, you can find the perfect battery to power your DeWalt tools and get the job done more efficiently.