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What Is FlexVolt?

Tools & Equipment

What Is FlexVolt?

DeWalt's new battery technology automatically switches between 20 and 60 volts depending on the tool 

By By Kenny Koehler July 20, 2016
DeWalt Flexvolt circular saw
In series mode, a 60V FlexVolt battery connects all 15 cells in series, to deliver 60 volts at 2 Ah.

All images: courtesy ProToolReviews.com

On June 21, 2016, at 8:30 a.m., the power tool industry changed when DeWalt unveiled its FlexVolt system. What makes FlexVolt so revolutionary is that FlexVolt batteries are wired for both 20V Max and 60V Max. And because the tool tells the battery which mode to operate in, it’s completely automatic for the user. Wiring the battery both ways offers extreme runtime in 20V Max tools or incredible power in 60V Max and 120V Max tools.

Why FlexVolt?

Before FlexVolt, battery pack wiring was fairly straightforward: lithium-ion cells were either wired in series to increase the voltage or wired in parallel for greater amp hours. But in its research, DeWalt found that larger brushless motors run better at higher voltages than they do with a higher amp current pushed through at lower voltages. At the same time, the company wanted to preserve backward compatibility with all of the tools it had developed that run just fine at lower voltage.

This is an excerpt. Read the full article at ProToolReviews.com.


FlexVolt parallel mode schematic

FlexVolt Series mode schematic

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