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What is your M1 MacBook battery health at?
- Thread starter Jacoblee23
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M1 MBA, Bought in December 2020
- Cycle Count: 96
- Maximum Capacity: 92%
Sorry only just spotted your reply. (Don't know how that went under the radar). The answer would have been from the other similar threads I mentioned, but there have been many replies here since. I haven't analysed them all but my first impression of yours was that I have seen better and worse reported.
As I and others mentioned, you have to be careful whether the Apple numbers are being reported or the
ioreg values used by the third party apps. The ioreg number fluctuates up and down, while the Apple numbers are some algorithm which damps out these fluctuations so people aren't complaining too early.
Is it just cycles that reduce life or also time? If you've had it 1 year, you'll get 5 years out of it at the rate of 4% down per year to 80%.
Is your battery management working?
Check that it just charges to 80% while it's sitting just plugged in. If that's not working, make sure it gets on the record, they should fix that management issue, and if they can't, they should be responsible for a battery dying early. And how long have you had it?
Make sure battery management is working as intended, of not, tell Apple to fix that feature, if they don't fix that feature, you need a record of it so you can put in for warranty on the battery if it gets down to 80% too soon.
Are you saying that if it charges past 80% that the battery management isn't working properly?
The 80% hold feature only applies if the machine is mostly plugged in all the time. Some people for whom it works say it took a few weeks to learn that this was your usage.
A single test would not prove anything but if after a few weeks it is not holding at 80% then I would say it is not working.
In my experience, all of my laptops lost around 7% year on average. However that doesn't mean linear drop. It could stay the same for 1 year or never lose health for 2 years, but after 10 years, average was 7% a year.
M1 Air from November 2020. Usually plugged into a TB3 monitor with power. AlDente set to 80% since early 2021.
Coconut numbers go up and down. I do observe them, but it's probably best to just install AlDente, set it to 80% and forget about charging habits.
For a while it looked like battery health was tanking, it went from 100 to 95 in 3 months in Coconut Battery, but then it came back to 99%, currently standing at around 98 %. It's been 100 % all this time according to Apple's System Information report.
In practice battery life is great, slow nighttime browsing gives projections in the range of 16-18 hours. I don't know what the battery life really is, it never runs out. It just seems to last forever. And I wouldn't let it to go to zero. 40-80% is good for longevity for Li-ion/polymer batteries.
Coconut numbers go up and down. I do observe them, but it's probably best to just install AlDente, set it to 80% and forget about charging habits.
For a while it looked like battery health was tanking, it went from 100 to 95 in 3 months in Coconut Battery, but then it came back to 99%, currently standing at around 98 %. It's been 100 % all this time according to Apple's System Information report.
In practice battery life is great, slow nighttime browsing gives projections in the range of 16-18 hours. I don't know what the battery life really is, it never runs out. It just seems to last forever. And I wouldn't let it to go to zero. 40-80% is good for longevity for Li-ion/polymer batteries.
I pretty much run it off battery 80% of the time. Rarely let it drop below 50%, and probably never below 20%.
Often charge straight back to 100%, but naturally there are times I can only boost it for an hour or so.
M1 MBP (2020 model), bought refurbished from apple in July 2021. My battery capacity has been decreasing rapidly according to coconut. System info.app says 95%, which is still not great at 54 charges and 4 months of use. Despite all this, the battery still lasts all day.
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M1 MBA 16/512, bought sometime during the summer this year (about 6 months). I haven't used it as much because I split time between my iMac and laptop, but lately I've been using this way more. The device rarely discharges, but I usually let the charge get really low—around 10-20% before recharging to 100%.
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My Day 1 M1 MacBook Air is at 89%. Granted, I don't use it every day since getting my M1 Pro MBP, but I used it a good deal last year....
Day 1 M1 MacBook Air (547 days). I'm still at 100% after using it on the charger in clamshell mode for most of the duration. I've only got a cycle count of 50. The optimized battery charging has been active since a few weeks after I got it and has kept the battery at below 80% for most of that time.
Coconut battery says my battery was manufactured on 2020-10-26.
Here are my current ioreg values:
Coconut battery says my battery was manufactured on 2020-10-26.
Here are my current ioreg values:
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M1 MBA purchased 12/24/20
Health Information:
Cycle Count: 30
Condition: Normal
Maximum Capacity: 100%
Health Information:
Cycle Count: 30
Condition: Normal
Maximum Capacity: 100%