I had a 2015 MacBook Air that became rendered useless this past week when I realized I could no longer access key websites because my browser was outdated, and despite trying to get support from apple and try some “hacks” to upgrade the OS, I couldn’t figure it out (was still running Sierra 10.12). I’m not all that upset about getting a new one as I had that last one for 7 years, and I’m really not too techy, so I don’t have the time/patience to deal with trying to fix it.
Anyhow, I bought the 2022 MacBook Air M2 from Costco today. Got it set up and charged up to 75%. I saw on YT that it’s recommended to DL the “Battery health” app, so I did. It says my battery health is only 2%. It seems to be performing just fine so far and holding a charge well, but just wondering if I need to be worried about this supposed “battery health” or not.
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The only battery health number you should trust is the one reported by macOS.
It sounds like you downloaded a buggy app which some YouTuber was paid to promote.
Leave the battery be. You don’t need apps to monitor heath, or limit charging. You’re paying an absurd amount for most laptops to them just get 70-80% battery (which is a big thing MBS are known for) If you’re concerned about battery health, get AppleCare+.
Then proceed with using it as you need.
There’s no need to download an unreliable, 3rd party battery health app because your MacBook has it’s own built in. Go to battery settings from the battery indicator at the top of the screen. From there, you can see your battery condition, maximum capacity, and optimized battery charging is on by default.