coconutBattery
Battery health
freeUtilities
coconutBattery shows what Apple hides: current maximum capacity versus factory, cycle count, and the Mac's manufacture date. Plug in an iPhone to see its battery too. The first check when buying a used MacBook.
// Install
Your MacHomebrew in /opt/homebrew
brew install --cask coconutbattery// What it is for
- Shows real battery capacity against the factory figure — an honest answer to "is it time for a new battery"
- Charge cycles, device age, and current charging wattage
- Reads the battery health of a connected iPhone or iPad in the same window
- The free version is enough for a one-off diagnosis
// Common questions
At what wear level should I replace the battery?
Apple treats around 80% capacity at 1000 cycles as normal for current MacBooks. Capacity well below that at a low cycle count is a reason to visit service — and a coconutBattery screenshot helps the conversation.
What does the paid version add?
Measurement history, background monitoring, and notifications. Checking your battery once needs none of that.