Simon Willison’s Weblog

Battery Statistics. Run “ioreg -w0 -l | grep Capacity” on a MacBook or MacBook Pro to find out the DesignCapacity (original) and MaxCapacity (current) of your laptop’s battery.

Posted 27th July 2008 at 11:05 am

Recent articles

Olmo 3 is a fully open LLM - 22nd November 2025
Nano Banana Pro aka gemini-3-pro-image-preview is the best available image generation model - 20th November 2025
How I automate my Substack newsletter with content from my blog - 19th November 2025

battery 2 capacity 1 corstencurdt 1 macbook 3 macbookpro 3 power 3

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