The long answers.
The home page should be readable in a minute. The questions that need more than that live here.
- Usage · 5 min read
What a six-hour coding session does to your battery
An agent running all afternoon means plugged in, at 100%, and warm. That combination is the worst one there is for a lithium cell, and almost nobody notices it.
Read - Explained · 7 min read
Why your Mac’s battery ages (and why 100% isn’t always best)
Cycles are only half the story. What wears a battery down is the chemistry running inside it, and how much of its life it spends sitting at full charge.
Read - Usage · 2 min read
Should you leave your MacBook plugged in all the time?
Staying plugged in isn’t the problem. Sitting at 100% and running warm is. Here’s what’s actually happening, and what you can do about it.
Read - Explained · 2 min read
Mac battery health: capacity, cycles and temperature
What the numbers macOS shows you actually mean, why two apps sometimes disagree about your health, and when it’s worth worrying.
Read