Battery health decrease

If you want some more science, see here:

https://airqualitynews.com/2021/01/12/why-do-lithium-ion-batteries-degrade-over-time/#:~:text=These%20are%20often%20lost%20through,be%20achieved%20by%20the%20battery.

They wear out as they age. If yours goes below 80%, get it replaced.

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Great article, I'm going to use this. Thanks Idris.

I'm glad it was helpful. It seemed to strike a reasonable balance between explaining the science but not overwhelming with too much jargon.