Milwaukee 49-24-2371 M18 18 Volt Lithium-Ion Cordless Power Source

The Milwaukee 49-24-2371 M18 Power Source turns compatible M18 Compact and XC battery packs into a portable USB charging source for phones, MP3 players, digital cameras, and other small electronic devices. This 18V cordless power source also works with compatible M12 Heated Jackets that have the expandable battery pocket, helping provide extended jobsite warmth when used with an M18 XC battery pack.

The Milwaukee 49-24-2371 M18 Power Source is a compact adapter designed for users already working on the Milwaukee M18 battery platform. It connects to M18 Compact and XC battery packs and provides a powered USB port for charging portable electronics on the jobsite, in the shop, or while traveling between service calls.

This cordless power source is also designed for use with M12 Heated Jackets that include the expandable battery pocket. When paired with an M18 XC battery pack, Milwaukee states it can provide up to 18 hours of continuous heat. It is a practical add-on for tradespeople, maintenance teams, utility crews, and mobile workers who need a simple way to use existing M18 batteries for small-device charging or heated gear support.

Milwaukee M18 Power Source At a Glance

• M18 Battery Compatibility: Works with Milwaukee M18 Compact and XC battery packs.
• Powered USB Port: Charges phones, MP3 players, digital cameras, and similar portable electronics.
• Heated Jacket Support: Compatible with M12 Heated Jackets that have the expandable battery pocket.
• Extended Runtime Potential: Provides up to 18 hours of heat when used with an M18 XC battery pack.
• Cordless Jobsite Use: Uses existing M18 batteries for portable charging without a wall outlet.
• Compact Adapter Design: Easy to carry in a tool bag, service vehicle, or jobsite kit.
• Tool-Only Accessory: Includes the power source only; battery and charger are sold separately.
• Discontinued Status: Milwaukee’s current product page lists this model as no longer available.

Quick Specs

• Brand: Milwaukee Tool
• Manufacturer Part Number: 49-24-2371
• UPC: 045242285945
• Product Type: Cordless power source / USB power adapter
• Power Source: Milwaukee M18 battery pack
• Voltage: 18V
• Battery Platform: Milwaukee M18
• Compatible Batteries: M18 Compact and XC battery packs
• USB Charging: Powered USB port
• Heated Gear Compatibility: M12 Heated Jackets with expandable battery pocket
• Runtime Claim: Up to 18 hours of heat with an M18 XC battery pack
• Weight: 0.31 lb, based on authorized seller listing

Markets

• Electrical Contractors: Useful for keeping phones and small electronics charged during service work.
• Mechanical and HVAC Technicians: Fits well in mobile service kits that already use M18 batteries.
• Facility Maintenance Teams: Helps support small-device charging during repairs, inspections, and rounds.
• Municipal Crews: Practical for field teams working away from fixed power.
• Construction Trades: Supports USB charging and heated gear use on active jobsites.
• Warehouse and Yard Operations: Helps crews keep portable electronics powered during long shifts.
• Outdoor Workers: Works with compatible heated jackets for cold-weather jobsite use.
• Advanced DIY Users: Useful for anyone already invested in Milwaukee M18 cordless tools.

The Milwaukee 49-24-2371 M18 Power Source is a simple way to get more utility from existing M18 batteries. Instead of carrying a separate power bank, users can connect this adapter to a compatible M18 Compact or XC battery pack and charge small USB-powered electronics directly from the battery platform they already use for cordless tools.

For cold-weather work, this adapter also supports compatible M12 Heated Jackets with the expandable battery pocket. Paired with an M18 XC battery pack, it gives users longer heat runtime than smaller battery options, which can be valuable for outdoor crews, service technicians, and maintenance teams working through long shifts. Its compact size makes it easy to keep in a tool bag, truck console, or jobsite storage box.

Milwaukee 49-24-2371 M18 18 Volt Lithium-Ion Cordless Power Source Features

• M18 Compact and XC Battery Compatibility: Connects to Milwaukee M18 battery packs for portable power.
• Powered USB Port: Charges compatible portable electronic devices from an M18 battery.
• M12 Heated Jacket Compatibility: Works with M12 Heated Jackets that include the expandable battery pocket.
• Extended Heat Runtime: Provides up to 18 hours of continuous heat with an M18 XC battery pack.
• Portable Design: Small adapter format is easy to transport and store.
• Cordless Convenience: Helps reduce dependence on wall outlets for small-device charging.
• M18 System Use: Allows users to get added function from batteries already used with Milwaukee cordless tools.

Compatible Accessories / Works Well With

• Milwaukee M18 Compact battery packs
• Milwaukee M18 XC battery packs
• M12 Heated Jackets with expandable battery pocket
• USB-chargeable phones, MP3 players, digital cameras, and similar portable electronics
• Milwaukee M18 chargers for recharging the battery packs used with this adapter

Milwaukee 49-24-2371 M18 18 Volt Lithium-Ion Cordless Power Source Includes

• (1) M18 Power Source, 49-24-2371

Milwaukee 49-24-2371 M18 18 Volt Lithium-Ion Cordless Power Source Specifications

• Brand: Milwaukee Tool
• Manufacturer Part Number: 49-24-2371
• UPC: 045242285945
• Product Type: Cordless power source / USB power adapter
• Product Line: M18
• Voltage: 18V
• Battery Platform: Milwaukee M18
• Compatible Battery Types: M18 Compact and XC battery packs
• Power Supply Function: Yes
• USB Port: Powered USB port for portable electronic devices
• Heated Gear Compatibility: M12 Heated Jackets with expandable battery pocket
• Maximum Heat Runtime: Up to 18 hours with an M18 XC battery pack
• Battery Included: No
• Charger Included: No
• Assembled Weight: 0.31 lb
• Color: Red

Milwaukee 49-24-2371 M18 18 Volt Lithium-Ion Cordless Power Source Warranty

• Milwaukee’s 1 Year Limited Warranty

Why Customers Choose the Milwaukee M18 18 Volt Lithium-Ion Cordless Power Source

Customers choose the Milwaukee M18 Power Source because it adds practical charging and heated gear support to the batteries they already use. For contractors, facility teams, and mobile service crews, this USB power adapter helps keep phones and small electronics charged without needing a wall outlet or separate power bank.

It is also useful for cold-weather work when paired with compatible M12 Heated Jackets. The ability to run from M18 Compact or XC battery packs makes it a good fit for users already committed to the Milwaukee cordless tool system.