Scosche’s strikeLINE Rugged LED ($20) is the third LED Lightning to micro-USB cable we’ve seen in recent weeks. Like the others (Scosche’s flatOUT LED and Just Mobile’s AluCable LED), strikeLINE Rugged LED is meant to tell users when a device is done charging at a glance — it glows red when charging, and blue when fully charged, via a small LED on the Lightning side of the cable.