Milwaukee BOLT™ REDLITHIUM™ USB Cooling Fan

Helmet-Mounted Cooling Fan with Up to 15 MPH Airflow for Milwaukee BOLT™ Helmets

The Milwaukee BOLT™ REDLITHIUM™ USB Cooling Fan delivers the most powerful helmet-mounted airflow available — up to 15 MPH — to keep you cool and focused during long, hot days on the job. It mounts directly to the front and rear mounting slots of any Milwaukee BOLT™ Safety Helmet or Hard Hat, and includes three interchangeable air ducts so you can direct airflow exactly where you need it. Powered by the REDLITHIUM™ USB 3.0 Battery, it runs up to 6 hours on a single charge and recharges via USB-C right in the fan.

Key Features

• Up to 15 MPH air speed — the most powerful airflow in its class
• Up to 6 hours of run-time — 4 hours on high speed, 6 hours on low speed
• 3 included air duct variations — customize airflow direction for your work conditions
• Secure duct attachment — ducts stay locked in place during active use
• Mounts to BOLT™ front and rear mounting slots — compatible with all Milwaukee BOLT™ Safety Helmets and Hard Hats
• Interchangeable REDLITHIUM™ USB 3.0 Battery — swap batteries for virtually no downtime
• USB-C rechargeable — recharge the battery directly in the fan
• Compatible with Milwaukee BOLT™ Headlamps — run accessories simultaneously
• Balanced, all-day wear — designed to maintain helmet balance even with fan attached

Specifications

• Max air speed: 15 MPH
• Run-time (high speed): 4 hours
• Run-time (low speed): 6 hours
• Battery: REDLITHIUM™ USB 3.0 (included)
• Charging: USB-C (charges in fan)
• Compatibility: All Milwaukee BOLT™ Safety Helmets and BOLT™ Hard Hats
• Included: Fan, REDLITHIUM™ USB 3.0 Battery, 3 air duct variations

Quick Decision Guide

• Already have a Milwaukee BOLT™ helmet? This fan drops right into the existing front and rear mounting slots — no tools needed.
• Working long shifts in the heat? The 6-hour low-speed run-time covers a full workday on a single charge.
• Need extra batteries for all-day use? Additional REDLITHIUM™ USB batteries are sold separately and swap in seconds.
• Looking for Milwaukee BOLT™ helmets? Browse our full range of arborist helmets.

Frequently Asked Questions

What helmets is this fan compatible with?
It is compatible with all Milwaukee BOLT™ Safety Helmets and BOLT™ Hard Hats that feature front and rear BOLT™ mounting slots.

How long does the battery last?
Up to 4 hours on high speed and up to 6 hours on low speed with the included REDLITHIUM™ USB 3.0 Battery.

Can I charge the battery while it's in the fan?
Yes — the fan includes a USB-C port so you can recharge the battery directly in the fan without removing it.

What are the three air ducts for?
The three included air duct variations let you direct airflow in different directions — straight ahead, angled down, or angled up — depending on your work conditions and preference.

Can I use the fan and a headlamp at the same time?
Yes — the BOLT™ mounting system allows you to secure multiple accessories simultaneously, including Milwaukee BOLT™ compatible headlamps.