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Model#: MILN211121

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Milwaukee 2111-21 USB Rechargeable Hard Hat Headlamp

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  • Milwaukee 2111-21 USB Rechargeable Hard Hat Headlamp
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High Output. Secure Attachment. Powered by REDLITHIUM USB, the Milwaukee USB Rechargeable Hard Hat Headlamp delivers 475 lumens of TRUEVIEW High Definition output, and is capable of all-day runtime, over 2,000 recharges and 3X faster charging via USB. Optimized for use with hard hats, its slip resistant strap and clips provide easy and secure attachment. A water, dust and drop resistant body and lens allows it to withstand the toughest conditions. Get maximum control over output, beam coverage and runtime with five different modes, flood, spot and spot/flood beam patterns, and up-to 31 hours of runtime. The REDLITHIUM USB Battery can be recharged in the light via Micro USB or swapped out with additional REDLITHIUM USB Batteries for virtually no downtime. The Milwaukee USB Rechargeable Hard Hat Headlamp is covered by a limited lifetime warranty.
  • 475 Lumens of TRUEVIEW High Definition Output
  • Clips and Rubber Grip for Secure Hard Hat Attachment
  • IP54 Rated: Water and Dust Resistant
  • Flood, Spot and Spot/Flood Beam Pattern Options
  • 5 Light Output Modes for Optimal Brightness and Runtime
  • Spot/Flood Mode: 475 Lumens- 2 Hrs. Flood High Mode: 300 Lumens- 4.5 Hrs. Flood Medium Mode: 150 Lumens- 8.5 Hrs. Flood Low Mode: 25 Lumens- 31 Hrs. Spot High Mode: 300 Lumens- 4 Hrs.
  • 7-Position Tilting Light Head for Directing Light
  • Internally Charges REDLITHIUM USB Batteries through Micro-USB Port
  • 3X Faster Charge Time: 2.1A Charge Rate
  • Get 50% of a Charge in Under 30 Minutes, 80% in Under 1 Hour, and a Full Charge of the REDLITHIUM USB Battery in 2 Hours
  • USB Rechargeable Hard Hat Headlamp - 2111-21
  • REDLITHIUM USB Battery - 48-11-2130
  • 2 ft. Heavy Duty Micro-USB Cable
  • (4) Removable Hard Hat Clips


Cordless: Yes
Length: 2.21 in.
Weight: 0.41 lbs.
Amp Hour: 2.5 Ah
Batteries Included: 1
Battery System: REDLITHIUM USB
Battery Type: Li-Ion
Battery Warranty: 2 Year
Bluetooth Compatibility: No
Bulb Type: LED
CSA Safety: No
Case Included: No
Charge Time: 2 hr
Charger Included: Yes
ETL Safety: No
Lumens: 475
No. of Bulbs Required: 3
Powered Tool Power Source: Electric - Cordless
UL Safety: Yes
Voltage: 4V
Wifi compatibility: No



4.4 / 5.0
9 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
I use without a hardhat!
I use primarily at night to wander outside with dogs to avoid skunks and make sure sheds are closed/locked. I'm surprised at the intensity and amount of light it provides. Also comfortably fits my size 8 1/2 head without a hardhat.
April 24, 2019
Although I would recommend this device with reservations, the battery like is lacking severely and is bulky,
March 13, 2019
Bright, fits well. Clips are sub par.
I use this light on my hardhat,and the clips are great for that. The light is bright, and the settings are versatile enough for many tasks. The only complaint I have is the clips. After a few months use, the hinges no longer hold the lamp in position. I sometimes have to slope the light higher or lower depending on what I'm doing, but the light no longer stays where I place it. The price is high to have to replace it every few months for this wear and tear.
February 9, 2019
Originally posted at
I work at night
I’m a miner! Thank you Milwaukee for getting this one right .
January 20, 2019
Originally posted at
Deffinantly worth the buy.
I have been using this light for all my mechanic work on semi's. I work over 12 hour shifts most of the time and the only down fall is not having a spare battery for when I need it. I wish Milwaukee would make a external charger and sell on with 2 batteries so you can always keep working. Other than that, i would recomend anyone this light.
January 16, 2019
Originally posted at
Works well...bright and easy to recharge
December 30, 2018
Perfect headlamp good light
September 11, 2018
All the light I need....
This light goes where no light I've ever owned has gone before. Super bright with many modes to choose from and a sensible rechargeable system. Doesn't have to be mounted on a hard hat but feel fine on a bare head too. I'm very impressed with this product.
August 21, 2018
Originally posted at
Milwaukee 2111-21 USB Rechargeable Hard Hat Headlamp
I have used headlamps for nearly 10 years and find this to be extremely good for the price.

No more AA or AAA batteries to purchase and the provided head strap is well made. They even provide Cleats to mount on to your hard hat.

The battery provided seems to be working well also.
May 13, 2018

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