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-domi- t1_iwz7rsn wrote

How does that compare to the energy density in common lithium ion batteries like the 18650? Why is it measured power unit area, and not volume?

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tornpentacle t1_iwzgz95 wrote

Because size matters! If a manufacturer is willing to pay 10¢ more for a thinner battery that can stay alive as long as the one they used in their last model, well, someone is gonna do the research beforehand so they can try to capitalize on the tech.

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-domi- t1_iwzi7mq wrote

Uhh, sure, but the thickness still matters. Your capacitance comes from the volume, not the area. If they're going to measure density in terms of area, they should specify the thickness. Or just divide by it and give the measurement in terms of volume, then people can directly compare technologies.

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orangutanDOTorg t1_iwztpa0 wrote

Why would they want people to be able to do that and weaken their funding generating hype machine?

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Accujack t1_ix2ippn wrote

> Uhh, sure, but the thickness still matters.

Definitely, I've been told multiple times that it matters more than length.

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