Milwaukee Tool has launched the BOLT RedLithium USB Cooling Fan (48-73-1385), a hard hat and safety helmet accessory designed to keep workers cool through a full shift. It’s available now at Home Depot for $135.
What It Is
The fan clips into Milwaukee’s BOLT Front and Rear Mounting Slots — the same mounting system used by BOLT headlamps — so you can run a lamp and a fan on the same helmet simultaneously. It ships with a 3.0Ah REDLITHIUM USB battery, three air duct configurations, and a USB-C charging cord.
The fan generates up to 15 MPH of airflow with runtime of 6 hours on low or 4 hours on high — enough to cover most full workdays on a single charge. Total weight is 230 grams, balanced across the hat to avoid pulling the helmet forward during long shifts.
Specs
- Airflow: Up to 15 MPH
- Runtime: Up to 6 hours (low) / 4 hours (high)
- Battery: REDLITHIUM USB 3.0Ah (included)
- Charging: USB-C
- Weight: 230 grams
- Air duct options: 3 configurations included
- Compatibility: All Milwaukee BOLT Safety Helmets and BOLT Hard Hats
Who It’s For
Roofers, framers, concrete crews, and anyone working outdoors through summer. Heat-related illness is one of the most preventable jobsite hazards, but shade isn’t always an option. A battery-powered fan that runs all day without tethering to a cord is a practical upgrade that doesn’t require buying new PPE — it mounts onto the helmet you already carry.
At $135, the price is high for a hat accessory, but the included 3.0Ah REDLITHIUM USB battery accounts for a significant portion of that cost. The same battery powers other Milwaukee BOLT accessories, so there’s platform value if you’re building out a BOLT-equipped crew. Bundled kits pairing the fan with a BOLT helmet run $150–$160.
The Bottom Line
If your crew is already running Milwaukee BOLT hard hats, this is an easy add-on that delivers real comfort with six-hour runtime and all-day weight you won’t notice. Verify your helmet has the BOLT mounting slots before ordering — the fan won’t work with non-BOLT lids.
For more on Milwaukee’s ecosystem, see our Milwaukee vs DeWalt comparison. For essential jobsite PPE beyond headgear, our Best Safety Glasses guide covers eye protection. And if you’re curious how REDLITHIUM USB batteries differ from standard tool batteries, our Power Tool Battery Technology guide breaks it down.
Source: Milwaukee Tool, Home Depot. Available now, $135.
