If you have several-years-old iPhone, or know someone who does, you’re probably aware of the fact that the battery life is a lot shorter than when it was new.
The rechargeable batteries in today’s electronics degrade over time and become less capable of holding a charge or delivering the same peak power.
This caused Apple to limit the performance of older phones in order to prevent unexpected shutdowns, which led to class-action lawsuits, and ultimately a rather good $29 battery replacement program.
