Which safety helmets does this headlamp fit?

This light attaches directly without straps to all Milwaukee BOLT safety helmets and visors using the BOLT system.

Are a battery and charging cable included?

Yes, the lamp comes complete with one L4 B3 4V 3.0 Ah REDLITHIUM USB battery and a USB charging cable.

How do you charge the battery of this headlamp?

You charge the REDLITHIUM USB battery directly inside the light via the USB-C port using the included cable.

What light output and lighting modes does it provide?

The headlamp delivers up to 600 lumens across 4 modes and features a 70° pivoting head to direct light where needed.

What is the maximum runtime on a single charge?

With the included 3.0 Ah battery, the maximum runtime is up to 32 hours, depending on the selected mode.

MILWAUKEE L4 BOLTHL-301 USB rechargeable headlamp - 4933479902

Name: MILWAUKEE L4 BOLTHL-301 USB rechargeable headlamp - 4933479902
Brand: MILWAUKEE
SKU: 08083666
Price: 76.92 EUR
Availability: InStock

Supplier number: MILWAUKEE 4933479902 | EAN 4058546376963

Recommended Retail Price €121.62

76.92 tax incl.

€63.57 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered as of 17/11/2026
Shipping costs €6.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL
Delivered from Belgium

✆ Talk to a specialist

Reliable handsfree illumination on site

Practical benefits

Powerful high definition beam: You illuminate dark work areas effectively with a strong output of up to 600 lm.
Direct strap free mounting: The Milwaukee L4 BOLTHL-301 connects directly to compatible BOLT helmets without requiring an elastic strap.
Long lasting rechargeable power: You stay productive throughout your shift using the included 4V 3 Ah battery with easy USB charging.

In a nutshell

The right choise for

With the Milwaukee L4 BOLTHL-301, you illuminate dark workspaces with powerful and focused light. Delivering up to 600 lumens, this rechargeable headlamp connects directly to compatible safety helmets and visors using the bolt system, eliminating slipping elastic straps. With four versatile lighting modes and a 70° pivoting head, you can direct the beam exactly where you need it during electrical inspections or night shifts. The included L4 B3 4V 3.0 Ah battery provides an impressive runtime of up to 32 hours and recharges easily via USB.

Product information Accessories FAQ

€76.92

In stock - tax incl.

Key features according to our expert

Max. light output: 600 lm
Rechargeable: Yes
Batteries supplied: Yes
Number of batteries supplied: 1
Capacity (rechargeable battery/battery): 3 Ah
Battery voltage: 4 V
Max. usage time: 32 h
Product Range: Milwaukee BOLT

Supplied as standard

1 x L4 B3 Battery pack
USB cable
Supplied in: Blister packaging

Product description

600 lumens of multi-directional TRUEVIEW high definition light output
Full BOLT compatibility with a low profile design that works with all BOLT helmets, visors and face shields
Mount connects to BOLT helmet without straps
70° pivoting light head to help users direct light where it is needed most
4 modes to manage output or run time with up to 32 hours of run time on (1) USB 3.0 Ah battery
Fuel gauge allows fast checking of REDLITHIUM USB battery charge
Conveniently charge REDLITHIUM USB battery internally with micro-USB Type C cable from USB power source or AC outlet (wall plug not included)
IP54 rating, light is protected from dust and falling water
Jobsite tough micro-USB braided cable with metal ends
Includes USB cable

All Features

Max. light output: 600 lm
Rechargeable: Yes
Batteries supplied: Yes
Number of batteries supplied: 1
Capacity (rechargeable battery/battery): 3 Ah
Battery voltage: 4 V
Max. usage time: 32 h
Voltage (v): 4
Product range: Milwaukee BOLT
Max. operating time with l4 b3 battery (hours): 4/ 8/ 14/ 32
Blue light risk group: RG1
Max. light output spread mode high/medium/low/eco (lumens): 600/ 400/ 150/ 25
Battery type: Li-ion

Brand MILWAUKEE
08083666
EAN 4058546376963
Supplier number MILWAUKEE 4933479902

Accessories

MILWAUKEE L4 B3 REDLITHIUM USB battery 3.0Ah - 4933478311

Recommended Retail Price €45.31

36.91

€30.51 excl. VAT

On stock, immediately available.

MILWAUKEE BOLT 100 ventilated safety helmet (black) - 4932478917

Recommended Retail Price €39.87

29.95

€24.75 excl. VAT

On stock, immediately available.

MILWAUKEE BOLT 200 safety helmet blue not ventilated - 4932480655

Recommended Retail Price €120.94

91.20

€75.37 excl. VAT

Delivery time average 10 days.

MILWAUKEE BOLT 200 climbing helmet yellow ventilated - 4932478918

Recommended Retail Price €120.94

91.20

€75.37 excl. VAT

Delivery time average 10 days.

View more accessories (34)

Frequently asked questions about this product

Answered by specialists

Which safety helmets does this headlamp fit?: This light attaches directly without straps to all Milwaukee BOLT safety helmets and visors using the BOLT system.
Are a battery and charging cable included?: Yes, the lamp comes complete with one L4 B3 4V 3.0 Ah REDLITHIUM USB battery and a USB charging cable.
How do you charge the battery of this headlamp?: You charge the REDLITHIUM USB battery directly inside the light via the USB-C port using the included cable.
What light output and lighting modes does it provide?: The headlamp delivers up to 600 lumens across 4 modes and features a 70° pivoting head to direct light where needed.
What is the maximum runtime on a single charge?: With the included 3.0 Ah battery, the maximum runtime is up to 32 hours, depending on the selected mode.