The Milwaukee® USB Rechargeable Portable Power Source and Charger Kit includes a REDLITHIUM™ USB Battery, USB Rechargable Power Source and Charger, 2 FT Heavy Duty Micro-USB Cord. Conveniently charge your mobile phone, tablet and wireless headphonhes on and off the jobsite. Check the charge of your REDLITHIUM(TM) USB battery with the LED Fuel Gauge and easily recharge via Micro-USB cable from a wall plug or USB power source. Both REDLITHIUM(TM) USB Battery and Portable Power Source and Charger covered under 2 year warranty.