Key Features
550 Lumens, Tight SpacesThe Milwaukee 2128-21 REDLITHIUM USB Stick Light w/ Magnet throws 550 lumens from a slim light blade that gets into panels, under sinks, and behind equipment where a bulkier work light just does not fit. Position Light Where You Need ItA 220 degree rotating blade, magnetic base, and hook give you more mounting options, so you spend less time balancing a flashlight and more time working with both hands free. Built for Shop and SiteIP54 protection, 6 ft impact resistance, and chemical resistance matter on real jobs. This cordless inspection light is made for dirty, damp, and rough working conditions.
Overview
The Milwaukee 2128-21 REDLITHIUM USB Stick Light w/ Magnet is a compact cordless work light built for general task lighting and close inspection work. This is a stick light designed for lighting tight spaces, service areas, and hands-free inspection tasks. Model Number: 2128-21. If you spend time inside electrical panels, under cabinets, around mechanical equipment, or anywhere a full-size flood light is overkill, this is the kind of light that actually earns a spot in your bag.
The big selling point is simple: you get 550 lumens of output in a narrow form factor that can reach where other work lights cannot. Milwaukee gives you 4 total output modes including front, back, dual panel, and inspection light settings, which means you can choose broader area lighting or a more targeted beam depending on the job. On high, it delivers up to 2 hours of runtime on one REDLITHIUM USB 3.0 battery, which is enough for quick service calls, punch-list work, and focused inspection tasks.
Where this light separates itself from a basic handheld flashlight is positioning. The light blade rotates 220 degrees vertically, so you can angle the beam exactly where you need it instead of working around the light. Add in the magnetic base and integrated hook, and you get a lot more placement options on ladders, panel boxes, framing members, shelving, and equipment housings. That matters when you need both hands on wire, fittings, or fasteners.
The design is geared toward real service and trade work, not just garage use. Milwaukee built the housing from polycarbonate, kept the overall length to about 7.5 inches, and kept the weight down to about 0.74 lb. That makes it easy to pocket, clip into a pouch, or keep close by without it becoming one more bulky item you leave in the truck. The slim blade shape is especially useful for inspection lighting where you need to sneak light behind obstacles instead of flooding the whole area.
Jobsite durability is another reason this light makes sense for pros. It carries an IP54 rating for dust and water resistance, is rated for impacts up to 6 feet, and is listed as resistant to common shop and site chemicals. In plain terms, it is made to deal with the usual abuse that comes with service vans, tool bags, mechanical rooms, and active jobsites.
On the power side, this light runs on the Milwaukee REDLITHIUM USB battery system. That is a good fit for users already carrying Milwaukee USB-powered lights and personal task tools, because you can swap batteries instead of waiting around for a recharge. Charging is handled through an integrated USB-C charging port, and the kit includes a REDLITHIUM USB 3.0 battery and USB-C charging cord, so you are not starting with a bare tool.
This Milwaukee work light is a strong choice for electricians, HVAC techs, maintenance crews, plumbers, automotive techs, inspectors, and remodelers who regularly work in cramped, poorly lit spaces. It also makes sense for serious DIY users who want a better solution than holding a phone light in one hand. If your work involves close-up visibility, awkward mounting positions, and moving from task lighting to inspection lighting, this tool solves that problem directly.
Hands-Free Light in Real Work Areas
This is where a slim cordless inspection light pays off. Instead of trying to prop up a flashlight or wear a headlamp for everything, you can mount the light and keep both hands on the job.
- Magnetic base and hook create multiple mounting options
- 550-lumen output is built for close task lighting and inspection work
Aim the Beam Into Tight Spots
The rotating blade design lets you put light exactly where your eyes need it, especially under sinks, around piping, behind appliances, and inside cabinets or equipment housings.
- 220 degree vertical rotation improves beam control
- 4 lighting modes let you switch between broader task lighting and targeted inspection lighting
Compact Size, Full Utility
A lot of task lights are bright but awkward. This one stays easy to carry and easy to position, which is exactly why it works well for techs and tradesmen moving from one service stop to the next.
- Approximate dimensions: 7.5 in long, 2.0 in high, 2.4 in wide
- Polycarbonate housing helps keep weight down while standing up to jobsite use
What’s in the Box
- (1) Milwaukee 2128-21 REDLITHIUM USB Stick Light w/ Magnet
- (1) REDLITHIUM USB 3.0 Battery
- (1) USB-C Charging Cord
Key Specifications
| Light Output | 550 lumens |
|---|---|
| Runtime | 2 hours on High |
| Light Head Rotation | 220° vertical |
| IP Rating | IP54 |
| Voltage (V) | 4V |
| Battery System | REDLITHIUM USB |
| Length | 7.5 in |
| Weight (lbs) | 0.74 lb |
Compatibility
Battery Platform Runs on Milwaukee REDLITHIUM USB batteries. Charging Uses an integrated USB-C charging port for recharging the included battery.
Built For
ElectricalHVACPlumbingAutomotiveMaintenanceInspection WorkService CallsTight-Space Lighting
Pro Tip
For panel work or under-sink service, mount the base first and then use the 220 degree rotation to dial the beam in. It is faster than repositioning the whole light every time your working angle changes.
Warranty & Support
Limited Lifetime Warranty. Batteries are excluded.
Tool Nut’s Take
Tool Nut’s Take
Milwaukee 2128-21 REDLITHIUM USB Stick Light w/ Magnet Gets Into Places Full-Size Work Lights Cannot
This is the kind of light that makes a lot of sense for service work because it is compact, easy to mount, and actually useful in cramped spaces.
- Who it’s for: Electricians, HVAC techs, plumbers, mechanics, and maintenance pros doing close-up work in dark, awkward spots.
- Why it stands out: The slim rotating blade, magnetic base, hook, and multiple light modes give it more real-world flexibility than a standard flashlight.
- Worth knowing: Runtime on high is 2 hours, so if this is your all-day inspection light, carrying an extra REDLITHIUM USB battery is the smart move.
Common Questions
- What kind of light is this? This is a cordless stick light designed for task lighting and inspection work in tight spaces.
- How bright is the Milwaukee 2128-21? It delivers up to 550 lumens of output.
- Can the light be mounted hands-free? Yes. It has both a magnetic base and a hook for mounting.
- How far does the light head move? The light blade rotates 220 degrees vertically for better positioning.
- Is it built for jobsite conditions? Yes. It is IP54 rated, impact resistant up to 6 feet, and resistant to common shop and site chemicals.
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