For me I think it happened since the 12.2 upgrade. Mine never hold charge level at 80%, although I connected to A/C all the time.
anyway, 10% everyday to get the battery cell move a little bit, I'm OK with this. even if it is a bug.
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M1 Max 16" Battery Discharges to 80% and Charges to 100% Daily While on AC
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anyway, 10% everyday to get the battery cell move a little bit, I'm OK with this. even if it is a bug.
Thanks, and sorry for my missing it. Installed it; no problems so far with sleep resume etc. Works great on my 16"!
I'm wary about installing an esoteric app that has suddenly gone closed source (AlDente) to fix a bug in a feature that's supposed to preserve the battery. Apple should really fix this.
agreed. prefer apple's own tool if it's available.
upgraded to macOS 12.2.1 this morning, now the charge behaviour changed. no longer do frequent top ups, my charge now hold at 87%
It’s trying to learn your battery usage patterns. If you regularly change when you use your MacBook on battery you will probably see the behavior change. I use my M1 MacBook Air almost exclusively on the charger so I see the “on hold” behavior nearly all the time.
Here is what a week of battery charge percentage looks like for me even though it's plugged in 99% of the time:
Keeping batteries above 80% for extended time, or below 20% for extended time is bad for them.
If you only occasionally use on battery it will eventually learn to not go to 100% very often at all.
I agree. More a case that Apple's normal desire to have a totally automatic and transparent method does not work well with all usage cases.
I believe this is an example where a semi-automatic tool like AlDente is more appropriate.....unless you closely match the usage cases Apple was envisaging.
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Not everyone is like you! Yours is the kind of regular use case for which it works well.
Same here. Took a couple of months for it to "learn" my usage, but right now I'm pretty happy with the way it works.
Without being a battery engineer, isn't a lithium-ion battery composed of many individual cells, that each "gain" from being partially discharged and recharged from time to time ?
In the sense that it may be a way to "cycle" this discharge between different cells, while making sure the computer is always at least at 80% in case you suddently need it.
The battery is *ALWAYS* used, otherwise when you disconnected power, you'd likely use power, or a very large/dangerous capacitor (or bank) would be needed.
The limited charge/discharge is probably a good thing overall... counter is many phones that stay charged 98-99% lose a lot of battery life if plugged in too much. If you have enough charge to get through the night and can do so during the next day, it's often better to leave unplugged. I usually plug in when the offer to "extreme battery saver" is notifying me... similarly, unplugging when I notice it's full or over 95% or so.
By letting it go down to 80%, it's fewer charge cycles, not more, which keeping it "topped off" would be. That said, Looking at the battery tab, it looks like it isn't going from 80-100%, but just staying at 80%. That's a bit more concerning and why I was looking around. My guess is I'm not seeing the top up to 100% because it's probably just a few minutes here and there.
I kind of wish there were an option to let it go down as much as 50%, to reduce wear even further.
The limited charge/discharge is probably a good thing overall... counter is many phones that stay charged 98-99% lose a lot of battery life if plugged in too much. If you have enough charge to get through the night and can do so during the next day, it's often better to leave unplugged. I usually plug in when the offer to "extreme battery saver" is notifying me... similarly, unplugging when I notice it's full or over 95% or so.
By letting it go down to 80%, it's fewer charge cycles, not more, which keeping it "topped off" would be. That said, Looking at the battery tab, it looks like it isn't going from 80-100%, but just staying at 80%. That's a bit more concerning and why I was looking around. My guess is I'm not seeing the top up to 100% because it's probably just a few minutes here and there.
I kind of wish there were an option to let it go down as much as 50%, to reduce wear even further.
I ended up uninstalling the tool - it
1, being listed in the (cmd-tab) task list and
2, the need NOT to kill it accidentally (which is all too easy as it's in the task list)
drove me crazy.
Now all I do is hope Apple comes up with a way of setting "maximize battery level at 80%" instead of the current, constant dis/recharging madness.
Unlikely. Apple’s focus in these matters is on prolonging battery life while staying out of users way, and not letting users to configure their own arbitrary thresholds.