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Flex 24V Cordless LED Flood Light FX5131-Z Review

Flex Cordless Flood Light Diffuses The Competition With Illuminating Value

You can get an LED work light no matter which brand you work with, but some of them just seem to check off the box. Even though the Flex 24V Cordless LED Flood Light looks similar to other designs, there are some noteworthy differences.


  • Integrated diffuser creates a softer throw
  • Full 360° rotation
  • Multiple mounting options
  • Tough roll cage frame design
  • Outstanding value


  • We’d love to have a hybrid power option

Flex 24V Cordless LED Flood Light Output

There’s beauty in simplicity and Flex doesn’t make you work hard to figure out their flood light. A single button above the lens cycles through three modes from brightest to dimmest: 2000, 1000, and 500 lumens.

Flex 24V LED Work Light Bright

Using a 5Ah battery, expect to run 2000 lumens for about 5 hours, or 1 hour of runtime per amp-hour of battery you’re using.

The throw of the light is softer thanks to a built-in diffuser. Compared to other LED lights that don’t have one, it lights up your work area in a way that’s easier on your eyes. Plus, it’s a very clean throw with no artifacts and with even dimming as your eyes track toward the edges.

Flex 24V Cordless Flood Light Throw

The color temperature is very close to neutral. If anything it has a slight touch of warmth to it. Seeing true colors and identifying the difference between two colors that are close to each other is easy.

Flex 24V Cordless LED Flood Light Design Notes

Full Head Rotation

Nearly every LED flood light pivots but not all rotate 360°. Flex takes it a step further with 360° of free rotation without any stops. You can pivot the light all way around over and over again without hitting a hard stop and having to work it in the opposite direction to get back around.

Positive stops every 30° help you dial in the angle you need.

Flex 24V LED Work Light Frame

Mounting Options

The frame design offers several positions you can set it on for stability. If you want to get it off the floor or workbench, you have a couple of options.

A 5/8-inch threaded hole lets you connect it to a tripod and make it a stand light. Alternatively, two keyholes are an option to pop a couple of screws into a stud or joist. The light weighs 5.6 pounds without a battery, so be sure to use both keyholes into solid backing to keep it from falling.

Flex 24V LED Work Light Mounting

Rugged Frame

Flex uses a rugged aluminum/tool plastic roll cage frame for this light that makes it nearly impossible to hit the lens on a drop. It’s one of the tougher-looking frame designs we’ve seen.

Flex 24V Cordless Flood Light Review

Additional Features

  • Integrated carry handles behind the lens and on the frame
  • Therma-Tech heat management
  • 24V max 6-cell battery system with 20% more energy storage than 18V/20V max batteries
  • Compatible with all Flex 24V batteries

Just One Thing…

If w could add just one thing to this light’s design, it would be a hybrid power option. Once you invest in the system, you likely have enough batteries to cover your tools and your light. Still, being able to plug in an extension cord is a feature that offers a little insurance.

Flex 24V Cordless LED Flood Light Price

This Flex work light is available at Lowe’s for $79.99. If you look at what’s available from DeWalt, Makita, or Milwaukee in the same price range, none of them have anything close to this kind of output. They do have options that get you to the same performance level, but you have to go up in price significantly to get it.

Flex backs the light for 5 years—the same warranty their other lithium-ion power tool have. The Flex Founder’s warranty is still on the table as well. If you register by 12/31/21, they’ll make it a lifetime warranty.

The Bottom Line

Flex did an excellent job designing their 24V cordless flood light. Its combination of diffuser, output, and ruggedness is certainly impressive. However, it’s the value that really makes our eyes pop. Getting this level of quality and performance for a price so far under what other professional brands charge is sure to make Flex users smile when they see those other price tags.

Flex 24V Cordless LED Flood Light Specifications

  • Model: Flex FX5131-Z
  • Max Lumens: 2,000 lm
  • Runtime: Up to 5 hours with 5.0Ah battery in High Mode
  • Rotation: 360º
  • Tool Weight: 5.6 lbs.
  • Warranty: 5 years
  • Price: $79.99

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