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Don't do what I did.
- Thread starter Miltz
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I want to say I recall reading if you do something like this it needs to be 80% or higher or the OS will still draw and drain from battery. Once it hits 81% though it can use the charging algorithm to draw from the AC cord while not charging the battery any further.
The lesson for the OP is batteries don't like to sit at topped off voltage al the time. It isn't so much that they liked to be used its more an issue with constantly trying to shove amps into the battery when it is full. If you are going to store (not use) the battery you can't just hook it up to a charger all the time and keep it stuffed. I guess you could think of it like a fat guy at a Buffett. He just ate his full and now you are micro feeding him for hours and hours, eventually he is going to get sick of eating.
If u find the source I'd be interested (about the 80% thing )
Very nice analogy hahaha
Yeah my 09 17”mbp spent a few years on the charger in a desk, not getting used more than once a month at all, before getting pressed back into service a few years ago and becoming the most useful computer in my life. But about a year ago, the battery finally gave up, and started bulging up in the middle of the machine. I was near the end of an expedition, but by the time I could get it home 2 days later & take it out, it already bent up the touchpad inside, so now the right half clicks and the left doesn't, (not that big of a deal since I never clicked the thing anyway). …but, I cheaped out and got a $30 battery direct from china (they all are anyway, so why not), and what I got is a battery that says its at 100%, and then if you disconnect the charger, 3 minutes later says it’s down to 60% at which time the computer shuts off. Connect it to a charger, turn it back on, and it says 1% & charging. Every time.
When it’s time, just get the real battery.
Yeah, techies think they know how technology works.
But unless you built it all yourself, you really don’t know.
But unless you built it all yourself, you really don’t know.
Does Apple still have a calendar subscription for monthly battery discharges? I found that a nice reminder to let it die regularly 
seriously? sounds too coolDoes Apple still have a calendar subscription for monthly battery discharges? I found that a nice reminder to let it die regularly
I don't understand why people buy a portable computer and then spend this much effort worrying about using it.
The battery lasted 4 years, and would cost $200 to replace. It will probably do even better today if you don't try to outsmart the people who designed the charging logic. Put $5 in a jar once a month, get the most you can out of your machine, and replace the battery in 4 years.
The battery lasted 4 years, and would cost $200 to replace. It will probably do even better today if you don't try to outsmart the people who designed the charging logic. Put $5 in a jar once a month, get the most you can out of your machine, and replace the battery in 4 years.
Batteries are like boats-- they're meant to leave the dock.
I have a Macbook Pro (2012) Unibody. Original battery, still charges to 100%. The laptop is plugged in and charging the battery 24x7. No issues. It's electronics, a roll of the dice. Just use it and enjoy it.
It’s impossible to avoid battery load cycles. If the device is on and plugged in, it’ll still register a partial load cycle after hitting 100% SOC and coasting down to 96% SOC which it does on its own even when plugged in.
The computer can’t run solely off the charging brick. It runs off the battery and the charger recharges the battery.
iOS now has a shortcut automation that allows the user to automatically turn a smart plug on and off at a battery level they choose. Shortcuts is coming to MacOS Monterey so maybe they’ll include that functionality too.
Then the over charging problem will be solved forever.
It’s seriously effed up that battery charging on macs is designed to prematurely wreck the battery.
The computer can’t run solely off the charging brick. It runs off the battery and the charger recharges the battery.
iOS now has a shortcut automation that allows the user to automatically turn a smart plug on and off at a battery level they choose. Shortcuts is coming to MacOS Monterey so maybe they’ll include that functionality too.
Then the over charging problem will be solved forever.
It’s seriously effed up that battery charging on macs is designed to prematurely wreck the battery.
If you need to use it unplugged, use it unplugged. If you can plug it in, then plug it in. Is playing this game of 35-80% worth it? Why waste mental cycles on this? Computers should be set it and forget it. If you feel the need to babysit the battery, then by all means go ahead, but don’t be surprised if other people have better things to focus their attention on.
Use it plugged in if you can. Just replace the battery when you need to. Is saving that bit of money worth all those hours of babysitting the battery?
Use it plugged in if you can. Just replace the battery when you need to. Is saving that bit of money worth all those hours of babysitting the battery?
It was this, but it doesn’t work anymore, unfortunately.
webcal://www.apple.com/images/notebook_icalreminder.ics
I have the same MBP...2017 also. Mine is plugged in 99% of the time but when I travel (as recently as this past Thanksgiving) and use the battery I've never had a problem. Also, if what you say is true then Apple Stores should have some means that unplugs all of their devices periodically...which I don't believe they do. Your battery may just have had production problems (or your surge protector has allowed it to be damaged?). Anyways, if just leaving it plugged were the issue I'm sure the lawyers/MSM would have been on this long ago....for all Apple devices!
In my experience and dealing with 100's of Macbooks at work, the ones which were plugged in 100% of the time (mostly developer machines) had the most battery issues. Many swollen batteries.
On the other hand, ones that were used like normal mobile computers with 300-500 cycles, were still holding ~80% charge and had less issues related to the battery.
However, after a while, most batteries will go bad regardless, either stop holding charge or will swell up.
On the other hand, ones that were used like normal mobile computers with 300-500 cycles, were still holding ~80% charge and had less issues related to the battery.
However, after a while, most batteries will go bad regardless, either stop holding charge or will swell up.
Honestly, batteries need to be thought of as consumable or wear items. Think of them like brake pads for your car - use them when you need to and replace them when you need to. Don't overthink it!
I don’t know if they do, but it could just be a matter of cutting power to the devices via an automated power control system. If it’s plugged in but no power’s going through, then it runs off battery anyway.
But they likely don’t bother, most of the things on display that have internal batteries won’t be there longer than 12 to 18 months at the latest
I got it from here:
I leave my MBA permanently docked, can I force it to only charge to 80% to preserve the battery?
Yes you can, here is what you need to do. 1. Download the App called AlDente and set the charging limit to 80% or more. The key is to have it set at least to 80%, anything over 80% will bypass the battery and it will use the power straight from the charger. Under 80% it will go through the...
forums.macrumors.com
Sorry to hear this. I learned the exact same lesson in 2013. Kept one laptop plugging in 24-7 and after I think 2 years it was unusable due to rapid battery drain when not plugged in. I think it could last about 5 mins without being plugged in, no joke.
Conversely have had a 2012 MacBook Air which I’ve used like a normal person, drain, charge, go on trips, etc. and the battery seems to perform just as well today as it did the day I bought it.
The true lesson is that Apple fans, aside from being rabid and illogical are also neurotic as hell and create all sorts of fantasy’s around things you shouldn’t think much about.
Once I decided to just use my devices instead of letting them use me I’ve found they last much much longer and I’m happier for it ?
Apple makes some seriously quality hardware so I’ve found there’s no need for us to go out of way and just use the stuff
Conversely have had a 2012 MacBook Air which I’ve used like a normal person, drain, charge, go on trips, etc. and the battery seems to perform just as well today as it did the day I bought it.
The true lesson is that Apple fans, aside from being rabid and illogical are also neurotic as hell and create all sorts of fantasy’s around things you shouldn’t think much about.
Once I decided to just use my devices instead of letting them use me I’ve found they last much much longer and I’m happier for it ?
Apple makes some seriously quality hardware so I’ve found there’s no need for us to go out of way and just use the stuff
Here is a post I made a few weeks back about how I make my iPhone’s battery last much longer (TLDR: generally keeping a 25-76% range with the help of a Shortcuts Automation, but not worrying if it does drop below 25). If you’re a little bit neurotic like me then you may find it helpful. It’s much easier to pull off than it sounds. Let me know if you need help making the automation that pings your Apple Watch. If you don’t have one it’s still very doable, you can just make your iPhone ding instead of your Apple Watch.
I keep that same general charging range for my Mac (also with an >75% notification), while still drawing from AC power most of the time to avoid needlessly burning through battery cycles (I use my MPB as a desktop). I achieve that by just using a much lower wattage charger than the computer is meant to use (30 instead of 96). That way it takes forever to charge and is overwhelmingly using AC power. (Sidenote: I really wish Apple would give us the ability to use our Macs plugged in with charging disabled.)
It won’t go over very well if you’re doing an intensive task, and even if you’re not, the computer will often briefly switch to pulling from battery power (when you cause a spike in CPU usage), but that hasn’t caused a problem. It’s worked very well. On my newer Mac I’m still at 98% after years.
My posts about how I keep my batteries in good condition inevitably generate “it’s stupid worry so much about it” responses, but it’s actually incredibly easy given my circumstances (*but not everyone’s) and truly does work. To those people: feel free to quote this telling me that what I do is over the top, but you can save yourself some time by just ignoring my advice and moving on with your day.
I keep that same general charging range for my Mac (also with an >75% notification), while still drawing from AC power most of the time to avoid needlessly burning through battery cycles (I use my MPB as a desktop). I achieve that by just using a much lower wattage charger than the computer is meant to use (30 instead of 96). That way it takes forever to charge and is overwhelmingly using AC power. (Sidenote: I really wish Apple would give us the ability to use our Macs plugged in with charging disabled.)
It won’t go over very well if you’re doing an intensive task, and even if you’re not, the computer will often briefly switch to pulling from battery power (when you cause a spike in CPU usage), but that hasn’t caused a problem. It’s worked very well. On my newer Mac I’m still at 98% after years.
My posts about how I keep my batteries in good condition inevitably generate “it’s stupid worry so much about it” responses, but it’s actually incredibly easy given my circumstances (*but not everyone’s) and truly does work. To those people: feel free to quote this telling me that what I do is over the top, but you can save yourself some time by just ignoring my advice and moving on with your day.
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Mine kick on once. But again started to ignore that setting randomly. Any way to force that setting?