Charge or Sync Charge or synchronise your smartphone or tablet with this handy piece of kit from Xenta. Attach to your keyring and take it with you wherever you go. With its USB to micro USB connections the cable can be used with Android devices so you are always able to charge your smartphone. This device is also invaluable for when you are at work. Simply plug into a USB port on your workstation and charge your phone whilst you are in the office. No more flat batteries when you are on the commute home.