Milwaukee
Milwaukee Tool BOLT REDLITHIUM USB Cooling Fan
- SKU:
- MLW48-73-1385
- Availability:
- Usually Ships Same Day
- Weight:
- 5.39 LBS
Description

DUTY®
BOLT USB
Cooling Fan
Direct cooling airflow through interchangeable ducts on compatible Milwaukee BOLT head protection.
Product Overview
The fan uses BOLT front and rear slots. Three included duct styles direct airflow around the head.
A swappable REDLITHIUM USB 3.0 battery charges in the fan via USB-C. Speed affects runtime.
- Directed airflowUp to 15 mph air speed.
- Two speed settingsUp to 4 or 6 hours of runtime.
- Interchangeable ductsThree styles tailor the airflow.
- USB-C chargingCharge in fan or swap packs.
Technical Specifications
- Maximum air speed
- Up to 15 mph
- Low-speed runtime
- Up to 6 hours
- High-speed runtime
- Up to 4 hours
- Battery system
- REDLITHIUM USB 3.0
- Charging
- USB-C
- Mounting slots
- BOLT front / rear
Choose the Correct Fit
Verify the fan’s mounting arrangement on your exact Milwaukee BOLT hard hat or safety helmet, including any headlamp and other accessories.
Plan for the chosen speed: Milwaukee lists up to four hours on high and six on low with the REDLITHIUM USB 3.0 battery.
Installation & Care
Seat the fan and selected duct securely at the designated BOLT mounts. Keep airflow paths clear and check that the assembly does not alter head-protection fit.
Turn off the fan before removing attachments or cleaning. Follow the fan and battery instructions for charging, storage and service.
Small Details. Big Jobsite Energy.
Get set. Stay focused. Make your next move count.
THE NEXT JOB.
Ask Willy:
Need help matching the fan? Send Willy the exact BOLT head-protection model and the headlamp or other accessories you already use.
Important Product Questions
Are the battery and air ducts included?
Yes. The kit lists a REDLITHIUM USB battery, three air-duct accessories and a USB cable with the fan.
How long will it run?
With the REDLITHIUM USB 3.0 battery, Milwaukee lists up to four hours on high and six hours on low. Actual runtime varies with use and conditions.
Can I recharge the battery while it is installed?
The battery can be recharged in the fan through USB-C. It can also be exchanged for another compatible REDLITHIUM USB battery; additional batteries are sold separately.