In a laboratory at Oxford University sits the Oxford Electric Bell, which has spent 176 years constantly ringing. And no-one's quite sure what the battery that powers it is made of...
A few quick fixes is all these buses to make their appointed rounds
Just break a battery capsule off and plug it into your smartphone for up to six extra hours of talk time.
A wireless charging system just achieved three times the rate and 90 percent the efficiency of regular plug-in systems.
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