When the charge limit is at 80%, your MacBook does not trickle charge. Regarding the second reason: Even when your laptop is powered by the power adapter and the battery is not being charged, sometimes the hardware needs more juice than provided by the adapter, in which case it taps into the battery and discharges it a little bit.įor any reason, this can take a long time (mostly dependent on the size of your power brick) and you should not expect to see a quick battery drop beneath your limit while in sailing mode, as this would hurt the battery more than it helps. This can happen because of two reasons: Batteries do discharge themselves slowly over time because of the cell chemistry, even if there is nothing they are powering. Instead, it waits until your battery drops a few percentage points by itself. Sailing mode does not actively discharge (eg unplug) your MacBook. Maybe as the battery gets older, I'll start to see the battery percentage drop from 80% - as the older battery won't hold its charge as well any more (which was one of his two reasons for the 80% level dropping, cell chemistry). His two reasons don't apply - the newer battery in an M1 Mac isn't discharging much because of cell chemistry, and there are few if any times that the M1 Mac has to draw power from both the power adapter and the battery. On an M1 Mac, the battery (at least when it's newer) will hold that 80% charge most/all of the time (as the two reasons he gives for why the percentage would drop won't happen much on a newer M1 Mac), which is why I don't see the percentage drop from 80% to 70%. ![]() I think what he is saying is the MagSafe charger powers the Mac even when the battery is at 80%, and AlDente keeps the battery charge from going above 80%. I should have known that was wrong as the LED is "orange" which means "charging" (and connected of course). I think my misunderstanding was that I thought the battery powers the Mac once the battery is at 80% and that the power adapter does not supply power until the battery drops to 70%, at which time AlDente lets the power adapter charge until the battery is back up to 80%. Even if your battery calibration gets disturbed, doing 4+ full cycles will recalibrate your battery and the capacity will go up again.I heard back, I pasted what he said below. To avoid this issue, we recommend doing at least one full cycle (0%-100%) every two weeks. However, this is only due to a disturbed battery calibration and not because of a faulty or degraded battery. When this happens, your Macbook might turn off with 40-50% left or your battery capacity will drop significantly. IMPORTANT: Keeping your battery at a lower percentage, such as 20-80%, over weeks without doing full cycles (100%-0%) can result in a disturbed battery calibration. For example, if you set yours to 80% it will stop charging at around 83%, so be patient. Notice that in this state, your MacBook is still powered by the charger, but the battery is not charging anymore.įor some reason, macOS will always try to squeeze in a few more percent than specified. After a while, clicking on your battery icon will report “Battery is not charging” if you have more than ≈73% left, even though your charger is connected. ![]() You can check if it’s working by setting the max. Usually, the operating system will take a minute or two registering the changes, so be patient. charging percentage by clicking on the □ icon on your menu bar. ![]() When the installation is finished, enter your desired max. MacOS menu bar tool to limit maximum charging percentageĭon’t overcook your battery! Keep it fresh and chewy with AlDente.
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