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This Stretchable Battery Pack Wraps Around Anything and Charges Itself

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Thomas Musick
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There s one big obstacle holding back flexible electronics and conformable wearables, and that s stiff li-ion batteries.

Now, a team of scientists has developed a stretchable mesh of power cells that sticks to surface like a Band-Aid, and it can even charge itself.

The result is a medical sensing device that the team claims will provide a never-ending stream of bio-sensor data.

In tests published in PNAS, the team showed that the device could be stretched by 30 percent of its original length while still working perfectly.

The advance overcomes part of the difficulty with flexible power sources.

Adding solar cells means that the cells are constantly topped up—though the flexible device will only be useful for devices that require only modest amounts of power.

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Thomas Musick
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