Hello,

We noticed you're browsing in private or incognito mode.

To continue reading this article, please exit incognito mode or log in.

Not an Insider? Subscribe now for unlimited access to online articles.

Sustainable Energy

Portable Power

A new fuel cell about the size of a bar of soap gives travelers and backpackers a way to charge iPods or phones when they’re not near a power outlet. You activate the cell by squeezing and shaking it; after that, the company claims, it lasts for two or three months and generates about 20 watt-hours of energy, or enough to charge a typical phone five or six times. The power-generating reaction creates a benign by-product akin to soapy water. When the cell is depleted, it can be sent in a preaddressed box to a recycling facility.

Credit: Joshua Scott

This story is part of our March/April 2009 Issue
See the rest of the issue
Subscribe

Product: 24/7 Power Pack

Cost: $49.99 for the initial set (including power cords); $24.99 for replacement cartridges

Source: www.medistechnologies.com

Company: Medis

Other products in this section:

180° Surveillance Camera

Volume-Limiting Headphones

3-D Webcam

Pill ID

Internet Car Radio

One-Touch Data Backup

Energy-Saving Insulation

Eyelash Lengthener

Become an MIT Technology Review Insider for in-depth analysis and unparalleled perspective.

Subscribe today

Uh oh–you've read all of your free articles for this month.

Insider Premium
$179.95/yr US PRICE

More from Sustainable Energy

Can we sustainably provide food, water, and energy to a growing population during a climate crisis?

Want more award-winning journalism? Subscribe to Insider Online Only.
  • Insider Online Only {! insider.prices.online !}*

    {! insider.display.menuOptionsLabel !}

    Unlimited online access including articles and video, plus The Download with the top tech stories delivered daily to your inbox.

    See details+

    What's Included

    Unlimited 24/7 access to MIT Technology Review’s website

    The Download: our daily newsletter of what's important in technology and innovation

/
You've read all of your free articles this month. This is your last free article this month. You've read of free articles this month. or  for unlimited online access.