Joined in 2023 
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63 About this deal
FlexVolt technology is completely unique in the market: the battery units can switch between 20 volts and 60 volts depending on what voltage the tool is calling for. Thanks to this, there are suddenly several new tools available now that had never been possible before due to the limits of charge and runtime, such as a cordless air compressor and even a cordless table saw. DeWalt also just released a 60-volt Max 9″ cut off saw, a tool typically powered by a gas engine! This is the part of the article where we start discussing math, so if that’s not really your thing, feel free to skip to the end. DeWalt has just announced that they have made their most powerful line of batteries even stronger. A little under 2 years ago, DeWalt introduced FlexVolt, and they forever changed the way we look at the limits of cordless tools. Now, they are pushing that limit again, with the new DCB612 12.0Ah battery! It’s the biggest and baddest one yet, bringing a whopping 240 watt-hours to endure through the most demanding work.
The power and versatility of this new unit mean that it can benefit virtually anyone. Whether you’re running a full crew of workers, helping out with school projects on weekends, or doing yardwork, the extreme runtime lets you work longer than ever before. DeWalt has offered yet another innovation to push the boundaries of cordless tools without adding any unnecessary bulk or mass. Plus, since they will be compatible with the entire line of FlexVolt and 20V Max tools, you can have one set of batteries cover all your cordless needs. Product Information
Final Thoughts
In my use of the chain saw and leaf blower, the 9 Ah battery has just adequate use time. To me the 6 Ah battery in those tools would be pretty disappointing.
The new DeWalt batteries are also the same size and weight as their predecessor 9.oAh batteries, so you get 33.3% more runtime without adding any extra bulk. So What’s the Benefit of All That Power? The real way to determine how much power a battery can really provide is to calculate the Watt-Hours. This number is determined by multiplying the Amp-hours by the Voltage. In our situation, that gives us the equation (60Volts x 4.0Ah) or (20Volts x 12.0Ah) = 240 Watt-Hours. With all this talk of how long the battery can last, you might be wondering how long it has to sit on the charger between uses. For crews with lots of cordless tools floating around, DeWalt also recently announced a new 4 port fast-charger to top off four units in just about 2 hours. With how much runtime you will get from a single charge, this is more than long enough so you won’t ever get left sitting around waiting without any live batteries in hand. Final Thoughts
Thunderstruck
Three additional observations -- there is no weight penalty for the largest battery, so if money is no object that's the way to go
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