M18™ Redlithium High Output Hd12.0 Battery Pack, REDLINK™ Intelligence: Provides Optimized Performance and Overload Protection Using Total System Communication Between Tool, Battery and Charger, Length: 5.99", Height: 3.89", Width: 3.38"
Milwaukee 49-24-2371 M18 Power Source. Voltage: 18V. Power Output: 500 mA., 2.1 amp Powered USB Port Charges All Portable Electronic Devices, Including Tablets. Compatible with all M18™ Battery Packs. Compatible with all M12™ Heated Gear with Expandable Battery Pocket. (Battery sold separately).