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