Predictive Sensing: Catch Failures Before They Happenbeginner · ~90 min

The Fade Curve — Predict the Month Your Laptop Battery Stops Covering Your Day

Every laptop battery is quietly getting worse, and every laptop keeps some record of it — yet almost nobody finds out until the day the machine dies somewhere inconvenient. What would change if instead of a vague feeling that it "doesn't last like it used to," you had a month on the calendar and the evidence behind it?

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What you'll do

A folder on your own laptop containing a battery log that gains one honest, dated row every week without you touching it, whatever measurement history your machine had already been keeping mined into that same log, and a plain-English report Claude Code regenerates on every run that tells you your current usable runtime, how fast you are losing it per month, the projected month it stops covering the workday you actually have — and, when the data cannot support a projection, says so instead of guessing.