Could I Replace My Phone Battery With a Parallel Plate Capacitor?

Rhett Allain
5 min readMay 26, 2024
Photo: Rhett Allain. A parallel plate capacitor

The world runs on batteries — I think that’s essentially true. But is it possible to replace a battery with a parallel plate capacitor? Also, why would you want to do that? Well, the first reason is that it’s a fun physics problem. There is a second reason too. A parallel plate capacitor is literally just two metal plates. That’s much easier to build that a lithium ion battery…

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Rhett Allain

Physics faculty, science blogger of all things geek. Technical Consultant for CBS MacGyver and MythBusters. WIRED blogger.