Power That Changes Everything

Raising the Bar on Power

FLEX 24V Stacked Lithium batteries combine intelligent battery management with Therma-Tech™+ cooling technology to deliver power that changes everything.

200% More Power Icon

More Power

Outperforms traditional lithium, unleashing power that changes everything

300% Longer Battery Life Icon

Longer Battery Life

Battery lifetime lasts four times longer than traditional lithium

100% Faster Charging Icon

Faster Charging

Fully charges in as little as 20 minutes

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Operates with all FLEX 24V tools and chargers

The Innovative Design Behind UNMATCHED Power

Our team worked for years to perfect Stacked Lithium technology. The result? Flat, state-of-the-art lithium ion cells designed with multiple tabs that allow energy to move almost effortlessly. Stacked Lithium batteries are engineered specifically for power tools to deliver power that’s unmatched.

FLEX Stacked Lithium Crushes the Competition

The numbers don’t lie. Compare each FLEX Stacked Lithium battery to the competition by choosing from the dropdown menus.*

*FLEX 24V Stacked Lithium batteries compared to 18V or 20V traditional lithium batteries with similar Ah.

Max. Watts (Power) at Peak Discharge Current
DeWalt® 20V max 2.0 Ah
2.0 Ah
5.0 Ah
8.0 Ah
12.0 Ah
Milwaukee® M18™ REDLITHIUM™ 2.0 Ah
2.0 Ah
5.0 Ah
8.0 Ah
12.0 Ah
FLEX™ 24V stacked lithium 3.5 Ah
3.5 Ah
6.0 Ah
10.0 Ah

put all that power to work



Step up to unrivaled torque of 1,400 in-lbs plus Turbo Mode for increased speed and power—all the way up to a blazing 2,500 RPM.

  • No-Load Speed: 0-550/0-2,000 RPM
  • TURBO Speed: 0-700/0-2,500 RPM
  • Impact Rate: 0-8,800/0-32,000 IPM
  • TURBO Impact Rate: 0-11,200/0-40,000 IPM
  • Max. Torque: 1,400 in-lbs, 158 Nm
  • Clutch Settings: 24+D+H
  • Chuck Capacity: 1/2 in, 1/2 po, 1/2 pu
  • Chuck Type: Metal single-sleeve keyless ratchet with carbide teeth
  • Tool Length: 7.2 in, 182 mm
  • Tool Weight (without battery): 3.8 lbs, 1.7 kg
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1/4" Quick Eject Hex Impact Driver with Multi-Mode


Power through the toughest fastening jobs with an unrelenting 2,500 in-lbs of torque, quick eject collet and three speed modes.

  • No-Load Speed: 0-1900/2700/4000 RPM
  • Impact Rate: 0-4,450 IPM
  • Max. Torque: 2,500 in-lbs, 282 Nm
  • Collet: Quick Eject 1/4 in Hex
  • Tool Length: 4.7 in, 119 mm
  • Tool Weight (without battery): 2.7 lbs, 1.2 kg

7-1/4" Rear Handle Circular Saw


Rip through miles of 2x4s. This powerhouse features magnesium footplate and guards and delivers advanced cutting performance.

  • Saw Blade: 7-1/4 in • 184 mm
  • No-Load Speed: 6,200 RPM
  • Bevel Capacity: 0-56°
  • Arbor: 5/8 in • 16 mm
  • Cut Capacity at 90°: 2-5/8 in • 66 mm
  • Cut Capacity at 45°: 1-7/8 in • 48 mm
  • Tool Weight (without battery): 10 lbs • 4.5 kg
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1/2" High Torque Impact Wrench


Delivers 1,150 ft-lbs of unrelenting torque for when jobs demand nut-busting power. Plus, three speed modes, bolt removal mode and vibration suppression.

  • No-Load Speed: 0-500/1,000/2,000 RPM
  • Impact Rate: 0-2,450 IPM
  • Fastening Torque: 800 ft-lbs, 1,084 Nm
  • Nut-Busting Torque: 1,150 ft-lbs, 1,558 Nm
  • Anvil Size: 1/2 in, 1/2 po, 1/2 pu
  • Tool Length: 8.7 in, 222 mm
  • Tool Weight (without battery): 6.9 lbs, 3.1 kg

7-1/4" Circular Saw


Slice through 3x lumber in one pass. This powerhouse features magnesium footplate and guards and delivers advanced cutting performance.

  • Saw Blade: 7-1/4 in, 184 mm
  • No-Load Speed: 5,800 RPM
  • Bevel Capacity: 0-56°
  • Arbor: 5/8 in, 16 mm
  • Cut Capacity at 90°: 2-5/8 in, 66 mm
  • Cut Capacity at 45°: 1-7/8 in, 48 mm
  • Tool Weight (without battery): 9lbs, 4kg
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Watch FLEX take on the competition with power that changes everything

Powered by Stacked Lithium technology, these FLEX 24V tools went head-to-head with the competition in the FLEX Faceoff Round 2.

FLEX tool with new Stacked Lithium battery technology

Now Through 2022

FLEX Founders Lifetime Warranty logo

Gain exclusive access to the FLEX Limited Lifetime Warranty on all FLEX 24V tools, batteries and chargers when you register within 30 days of purchase through December 31, 2022.

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