Helium Bluetooth speakers powered by supercapacitors: "Sharing music with friends through laptop or smartphone speakers can be less than satisfying, which perhaps goes some way to explaining the overwhelming choice of portable Bluetooth speakers that come into view as you enter a consumer electronics store. Such offerings all suffer the same problem, though. Just as you're getting your groove on, the built-in battery dies and you have to wait hours while it juices up from a wall socket. What mobile music lovers like me need are wireless speakers that can charge in minutes, and then last for hours. An impossible dream? Sam Beck from Portland's Blueshift doesn't think so. He's developed mono and stereo portable Bluetooth speakers powered by supercapacitors. Helium users can look forward to a super quick charge time, hours of full volume playback and years of recharge cycles before needing to consider a capacitor refresh."
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