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DeWalt FlexVolt 54V angle grinders run on the same 54V battery platform as DeWalt's larger cordless tools. That means genuine corded-equivalent performance with none of the trailing cables. For tradespeople who move between jobs constantly this matters a lot.
Disc size is the first decision to make. The 115mm and 125mm models are lighter and easier to handle in tight spaces. The 150mm and 230mm grinders remove material faster and suit heavy fabrication work. Bigger discs mean more weight so think about what you're cutting most often.
Brushless motors are standard across the range now. They run cooler, last longer and extract more power from each battery charge than brushed alternatives. If you're doing sustained metalwork or disc cutting through steel then brushless is the only sensible choice.
Look for models with an electronic brake - the disc stops within seconds of releasing the trigger. Kickback protection cuts power instantly if the wheel binds. These safety features are not optional extras on a job site.
The FlexVolt battery is backward compatible with 18V DeWalt tools so you won't need a separate battery collection. One platform covers grinders, saws, drills and more.