eli5, why can’t we have instant phone chargers?

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Hey guys, I don’t understand enough about electronics to answer this, but if my electricity at home is able to power a washing machine.
Should it not be possible to have like a super battery that goes 100% instant, and then release normal current to the phone until it’s charged? More like an instant power bank?

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14 Answers

Anonymous 0 Comments

Why should it be possible?

There’s no energy storage in the world that is instant, batteries are no different. A flywheel takes time to get up to speed. A water reservoir needs time to fill up.

Batteries work by having chemical processes that release electrons happen in a controlled fashion. Rechargeable batteries are the same, but use chemicals whose processes can be reversed.

These processes take time, and are inefficient. You don’t get all the electricity put into them back as usable power. The power lost turns into heat, and too much heat in too short a time can lead to fires.

Even without the fire hazard, trying to force a chemical reaction to happen faster than it wants to is likely to just change the chemical properties in such a way that they’re no longer usable.

Imagine trying to make a hot dog. Grilling it takes maybe 5 minutes. Could you do it in 0.1 seconds if you just had a flame that was 30000 degrees instead of 1000 degrees? No, you’d get a coal shell with a raw hotdog inside. You don’t get the chemical reaction you want if you don’t supply the right amount of energy at the right rate.

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