why most electronic devices perform worse and worse as the battery life shortens? shoudln’t they always perform at peek as long as there is battery?
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Imagine you’ve got a tank of water, and you poke a hole in the side near the bottom. At the start,the water comes out of the hole really quick, because there is the pressure of all the water above it. As time goes on, there is less water above the hole, meaning less pressure, so the water comes out slower and slower, down to a dribble. Eventually, there is no water above the hole so the flow stops.
This is a simplified metaphor, and it more directly describes a capacitor than a battery, but the principal of “the closer you are to empty, the lessbyou can pull out at once” applies still to batteries. And springs and flywheels and pressure tanks and heat storage. Lots of energy storage devices really.
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