Your smartphone is portable; your power should be too! Now you can have power whenever, wherever you need it, even without an outlet. The Energizer Portable Smartphone Charger more than doubles the run time of yoursmartphone and iPhone. This pre-charged and ready to use charger is ideal when youre on the go and need power. Use your existing USB cableor the Micro USB cable (included)to chargeyour smartphone.Simply connect the included Micro USB cable to a USB charger or port on your laptop when its time to recharge the charger. Magnetic clips tame the cables when youre not charging.