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The E-Kaia device claims to be able to harvest electricity released into soil by small plants. Here's a Daily Mail article describing it.

And because not all of the electrons are needed, harvesting them doesn't impact the plant.

According to E-Kaia, the technology can output up to five volts at around 600 milliamps, and this can charge a phone in around an hour and a half.

Is this possible - does it actually charge in an hour and a half, and can electricity actually be produced from a pot plant?

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    this rather small battery has 900 mAh at 3.7V (making 1.5h * 5V * 600mA plausible) but this battery has 2600 mAh and there much bigger batteries in the same category as well. – John Dvorak Oct 25 '15 at 13:41
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    The more I look at this, it's starting to look less like a scam and more like an emerging piece of technology that the media just did a really poor job of explaining (which is way too common, unfortunately) – John Dvorak Oct 25 '15 at 14:04
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    I assume you mean potted plant, not pot plant. – iamnotmaynard Nov 6 '15 at 17:44
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    @iamnotmaynard that's correct :) I'm from Australia and 'pot plant' has the same meaning as potted plant (AFAIK). – Matt Lyons Nov 6 '15 at 21:57
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    @shadur the explanation is nonsense, but it could still be based on technology based on a reasonable idea. – John Dvorak Jan 2 '16 at 19:03

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