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Hi,
I have a brand new Macbook air (M1, 2020). I was testing its battery and the charge came down from 80% to 30% in 8 hours. During this time I was just browsing the web but not streaming any videos. Is this performance normal? I thought MacBook Air has 18 hours of battery life and I seem to be getting around 10 hours.
MacBook Air 13″, macOS 15.0
The battery life spec is dependent on usage. But do the math on your numbers: your battery used 50% (80-30) of its charge in 8 hours, meaning a full charge should give you ~16 hours of use and that's not far off 18 hours.
You can also see if there are processes running in the background. For example, if you set up your Mac from another computer (via Migration Assistant) or copied over a lot of data, your Mac will index that for Spotlight searching and that runs in the background and takes some time.
Activity Monitor User Guide for Mac - Apple Support
Since the last M1 MacBook Air was manufactured on March 4, 2024, it was sitting on the shelf for up to 8 months which is not good for the health of rechargeable batteries.
Go into Settings->Battery and click the little info icon where it says "Battery Health". What is the stated "Maximum Capacity?
when i bought it was new and the battery when it first time on was 80%, regarding the battery health and the maximum capacity is currently 100%
i see, thnks a lot :)
Macbook Air M1 2020 Battery Life
