A Samsung smartphone has just been recharged from being nearly out-of-juice to full capacity in less time than it takes to boil a kettle.

The Israeli start-up behind the demo, Storedot, has shown off a similar feat before.

But a previous demo posted online eight months ago involved a battery many times thicker than the handset itself as well as an outsized charger – making the tech impractical for real-world use.

This time round the phone involved is no bigger than normal, and the charging dock is pretty slim-line as well.

There’s a couple of trade-offs involved, but being able to recharge devices about 100 times faster than at present has the potential to revolutionise the way we use mobile phones, tablets, laptops and wearable tech.

The BBC is the first to have been shown the new kit, apart from tech industry executives who had to sign non-disclosure agreements.

Leo Kelion Technology desk editor, Las Vegas

Source-BBC