The Milwaukee USB Rechargeable Portable Power Source and Charger Kit includes a USB rechargeable power bank and charger, a 2 ft. heavy-duty micro-USB cord and a REDLITHIUM USB battery. The portable battery charger enables users to conveniently charge their mobile phone, tablet and wireless headphones both on and off the job site. Users can check the charge of their REDLITHIUM USB battery pack with the LED Fuel Gauge. The portable battery pack can easily be recharged via Micro-USB cable from a wall plug or USB power source. Both the REDLITHIUM USB Battery and Portable Power Source and Charger are covered under a Milwaukee 2-year warranty. LED fuel gauge allows fast checking of REDLITHIUM USB battery charge More runtime: 2X more capacity than 3 AAA alkaline batteries 3X faster charge time: 2.1 Amp charge rate Longer life: over 2,000 recharges 2 ft. heavy-duty micro-USB cord