Keep your portable devices charged by the #1-selling battery brand-introducing power boost XL universal battery by mophie. Compact and easy to carry, the power boost XL battery will keep your smartphone and tablet charged when you most need it. Available in a variety of colors, this is the companion your portable devices just can’t live without. Connect any smartphone or tablet to the power boost XL battery’s USB port and press the status button to start charging. The LED battery indicator tells you the power boost XL battery’s charge level. Recharge your power boost XL battery by plugging the included micro USB cable into a USB wall adapter or laptop.