Exasperated laptop users caught without a power supply could find themselves
reaching for a foot pump. Five minutes of pumping on a device called the
StepCharger will generate enough electrical power to run a laptop for 20
minutes. It can provide up to 6 watts at 18 volts DC, and will also work for
mobile phones, digital cameras and video cameras, says its maker US-based
AladdinPower. The $150 pump is about the size of a paperback book.
To continue reading, today with our introductory offers
Advertisement
More from 91av
Explore the latest news, articles and features
Popular articles
Trending 91av articles
1
Red-light therapy does have health benefits but not the ones you think
2
Man destined for Alzheimer's may have been saved by accidental therapy
3
Woman in cancer remission without treatment in highly unusual case
4
A lost ancient script reveals how writing as we know it really began
5
PCOS postpones perimenopause and allows pregnancies at older ages
6
Extinct relative of koalas discovered in Western Australia
7
Where has the deadly hantavirus come from and how does it spread?
8
The greatest David Attenborough documentaries you really need to watch
9
We have figured out a new way to send messages into the past
10
The best new popular science books of May 2026
