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How to charge your phone anywhere, for free

A little elbow grease is all it will take to top up your devices battery life, thanks to this clever little portable charger

The first rule of thermodynamics states that energy can neither be created nor destroyed, only converted from one form to another. So when this Etón BoostTurbine portable battery charger with built-in hand crank charges your devices for free, what it’s really doing is turning a little sweat and elbow grease into precious electricity.

Sure, one minute of cranking will only get you about 30 seconds of talk time, but if you’re stranded on a desert island or desperate to order some pizza before your phone dies, then turning a handle is a small price to pay, don’t you think?

Lazy gadgeteers will be relieved to hear that you can also juice up the charger from a standard plug socket for crank-free charging, with the BoostTurbine2000 model offering up to a full charge in comparison to the BoosTurbine1000 which has enough juice for a 50 percent charge.

Available for US$60 and US$50 respectively, it’s the ideal way to get a bit of exercise while forging electricity with nothing but your bare hands. You’ll practically be a superhero.

[via Engadget]

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Profile image of Dan Grabham Dan Grabham Editor-in-Chief


Dan is Editor-in-chief of Stuff, working across the magazine and the Stuff.tv website.  Our Editor-in-Chief is a regular at tech shows such as CES in Las Vegas, IFA in Berlin and Mobile World Congress in Barcelona as well as at other launches and events. He has been a CES Innovation Awards judge. Dan is completely platform agnostic and very at home using and writing about Windows, macOS, Android and iOS/iPadOS plus lots and lots of gadgets including audio and smart home gear, laptops and smartphones. He's also been interviewed and quoted in a wide variety of places including The Sun, BBC World Service, BBC News Online, BBC Radio 5Live, BBC Radio 4, Sky News Radio and BBC Local Radio.

Areas of expertise

Computing, mobile, audio, smart home