Keep your micro-USB device powered up at all times with the Stitchway Micro-USB Ultrapower Backup Battery Charger. Simply connect the Ultrapower Backup Battery Charger to a power source to charge, and you can slip it in your bag or pocket to give your device that extra battery boost, wherever you are. What's more, the Stitchway backup battery charger charges via micro-USB and Mini-USB. The Stitchway Micro-USB Ultrapower Backup Battery Charger features indicator lights that let you know when your device is fully charged and how much battery power it has remaining.