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ABC News
ABC News
Business
technology reporter James Purtill

REVEALED: Self charging battery generates electricity from moisture in the air | Vintage Vibes

This bendable strip of nanomaterial can generate about half the voltage of a AAA battery. (Supplied: UNSW, Dewei Chu)

Fitness trackers powered by sweat. Bluetooth earphones than run on atmospheric humidity. Stick-on insulin sensors fuelled by thin air. 

These are some of the potential applications of what have been called "self-charging batteries", which harvest electrical energy from moisture.

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