This article applies only to Mac computers with an Intel processor.
About the lithium-ion battery in your Mac notebook
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Mac notebook batteries use lithium-ion technology. Lithium-ion batteries charge quickly, are long-lasting, and currently provide the best technology to power your computer.
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All rechargeable batteries are consumable components that become less effective as they get older—and their age isn't determined only by time. A battery's lifespan depends on its chemical age, which is affected by factors such as its temperature history and charging pattern. As your notebook's battery ages chemically, its charging capacity gets smaller.
After you install a new battery in a Mac laptop, the next step is to calibrate the power management system. WATCH THE VIDEO READ THE GUIDE BELOW While Newertech Batteries Are Shipped Up To 30% Pre-Charged.
With these tips for maximizing battery performance, you can get the most out of all your Apple devices. And with battery health management, your Mac notebook can take battery optimization even further.
How battery health management helps
The battery health management feature in macOS 10.15.5 is designed to improve your battery's lifespan by reducing the rate at which it chemically ages. The feature does this by monitoring your battery's temperature history and its charging patterns.
Based on the measurements that it collects, battery health management may reduce your battery's maximum charge when in this mode. This happens as needed to ensure that your battery charges to a level that's optimized for your usage—reducing wear on the battery, and slowing its chemical aging. Battery health management also uses the measurements to calculate when your battery needs service.
While battery health management benefits your battery's long-term lifespan, it can also reduce the amount of time your Mac runs on one battery charge when capacity limits are applied. If your priority is making your Mac notebook last as long as possible before recharging, you can turn the feature off.
When battery health management is turned on, your battery's maximum charging capacity might be limited. Although the feature is designed to improve your battery's lifespan, the limited maximum capacity might update your battery status menu to indicate a need for service. Your Mac calculates when to recommend service for your battery based on battery health management being continuously enabled.
How to control the battery health management feature
Battery health management is on by default when you buy a new Mac notebook with macOS 10.15.5 or later, or after you upgrade to macOS 10.15.5 or later on a Mac notebook with Thunderbolt 3 ports.
If you want to turn off battery health management on a Mac notebook with an Intel processor, follow these steps:
- Choose System Preferences from the Apple menu , then click Battery.
- Click Battery in the sidebar, then click Battery Health.
- Deselect 'Manage battery longevity'.
- Click Turn Off, then click OK.
Note that turning this feature off might reduce your battery's lifespan.
Learn more
If you feel that your battery isn't lasting as long as it should, you can learn about getting service for your Mac notebook.
'do one of the following to preserve your MacBook battery life:
* Discharge the battery 50 percent before storing your MacBook. * When storing your computer for longer than five months, discharge the battery to approximately 50 percent and then remove it from the MacBook. If you are storing your computer for an extended period, recharge your battery to 50 percent every six months or so.'
that quote is from the apple website on the macbook. what does the first point mean? does it mean to take the battery out when the battery life reaches 50%?
heres the link from where I got the info from....
http://www.apple.com/support/macbook/care/
vix wrote:
'do one of the following to preserve your MacBook battery life:
* Discharge the battery 50 percent before storing your MacBook. * When storing your computer for longer than five months, discharge the battery to approximately 50 percent and then remove it from the MacBook. If you are storing your computer for an extended period, recharge your battery to 50 percent every six months or so.'
that quote is from the apple website on the macbook. what does the first point mean? does it mean to take the battery out when the battery life reaches 50%?
heres the link from where I got the info from....
http://www.apple.com/support/macbook/care/
- Don't let the battery go completely flat. Do not maintain a full charge for weeks or months at a time, whether it is in use or not, but especially if letting the computer sit for a few months.
- If not using the computer for more than five months, remove it from the computer.
vix wrote:
that quote is from the apple website on the macbook. what does the first point mean? does it mean to take the battery out when the battery life reaches 50%?
Yes, when they state that you should remove the battery from the MacBook after you've run it down to 50%, they mean you should remove the battery from the MacBook after you've run it down to 50%. That's _if_ you're going to store it for more than 5 months, though. If it's less, then don't remove it.
Are you planning on storing your MacBook for an extended period?
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Mike Rosenberg wrote:
vix wrote:
that quote is from the apple website on the macbook. what does the first point mean? does it mean to take the battery out when the battery life reaches 50%?
Yes, when they state that you should remove the battery from the MacBook after you've run it down to 50%, they mean you should remove the battery from the MacBook after you've run it down to 50%. That's _if_ you're going to store it for more than 5 months, though. If it's less, then don't remove it.
Are you planning on storing your MacBook for an extended period?
--
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No im not, i just got my first ever mac.... and i love it!!!!! much better than pc's there so like 20th century
btw vista is a copy of os x 10.5 leopard
Thus spake Mike Rosenberg:
Yes, when they state that you should remove the battery from the MacBook after you've run it down to 50%, they mean you should remove the battery from
the MacBook after you've run it down to 50%. That's _if_ you're going to store it for more than 5 months, though. If it's less, then don't remove it.
I would add that if you don't need the battery (e.g., you use your computer always plugged in to AC power), I would remove the battery as instructed and put the battery in whenever you wish to go travellin' (even downstairs). Of course it means putting the battery back in occasionally to charge it back to 50%. This should extend the life of your battery several years. It's the heat of being constantly charged and installed in the MacBook that shortens the life of the battery, as well as the number of charge cycles it goes through.
Enjoy,
On 2007-01-18 12:12:35 -0600, vix said:
i just got my first ever mac.... and i love it!!!!! much better than pc's there so like 20th century
btw vista is a copy of os x 10.5 leopard
And a purely-superficial, bad copy, at that.
And under the hood is where it really counts - Mac OS X is far ahead in its system design. Windows Vista is largely still the same old Windows under the hood, in contrast.
vix wrote:
Are you planning on storing your MacBook for an extended period?
No im not, i just got my first ever mac....
Okay, so why are you concerned about what you're supposed to do with the battery when you're storing your Mac? Nothing you quoted applies to normal everyday use.
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Mike Rosenberg:
Okay, so why are you concerned about what you're supposed to do with the battery when you're storing your Mac? Nothing you quoted applies to normal everyday use.
I think he's looking forward to the day that his battery starts to croak even though he hasn't actually *used* it (e.g., being plugged into AC power for 90 percent of the computer's life).
See my earlier post in this thread regarding a suggestion for 'everyday use'. Enjoy,
John E. wrote:
I would add that if you don't need the battery (e.g., you use your computer always plugged in to AC power), I would remove the battery as instructed and put the battery in whenever you wish to go travellin' (even downstairs). Of course it means putting the battery back in occasionally to charge it back to 50%. This should extend the life of your battery several years. It's the heat of being constantly charged and installed in the MacBook that shortens the life of the battery, as well as the number of charge cycles it goes through.
Enjoy,
--
John English
According to the instruction book for my MacBook Pro, I am supposed to run the battery all the way down and recharge it every couple of months to 'calibrate' it. So it sounds as if it is supposed to go through
periodic charge cycles to maintain its storage capacity.
--- Brian
brian.b.mcguinness@lmco.com wrote:
According to the instruction book for my MacBook Pro, I am supposed to run the battery all the way down and recharge it every couple of months to 'calibrate' it. So it sounds as if it is supposed to go through
periodic charge cycles to maintain its storage capacity.
That seems to work for me - I run a (non critical) video render every couple of months on battery power to fully drain the battery. I'll plug it back in when it starts whining about 'immediate shutdown' blah blah. 3 and change years, still get a good 2.5 hours casual use, and 90 minutes of a video render on battery. G4 866 12' AlBook, if that matters.
Will
brian.b.mcguinness@lmco.com writes:
According to the instruction book for my MacBook Pro, I am supposed to run the battery all the way down and recharge it every couple of months to 'calibrate' it. So it sounds as if it is supposed to go through
periodic charge cycles to maintain its storage capacity.
I don't believe that this is intended, at least directly, to maintain its storage capacity. I believe that this process is meant to give an accurate measurement of the current storage capacity. It may well be that one use of this would be to help manage things for longer battery life.
Bill Mitchell
Dept of Mathematics, The University of Florida
PO Box 118105, Gainesville, FL 32611--8105 mitchell@math.ufl.edu (352) 392-0281 x284
Battery-e Mac Os Download
On 2007-01-19, William Mitchell wrote:
So it sounds as if it is supposed to go through periodic charge cycles to maintain its storage capacity.
I don't believe that this is intended, at least directly, to maintain its storage capacity. I believe that this process is meant to give an accurate measurement of the current storage capacity.
That's also my understanding, and is certainly more consistent with the term 'calibrate' that Apple uses in this context.
Previously, William Mitchell wrote:
brian.b.mcguinness@lmco.com writes:
Battery-e Mac Os X
According to the instruction book for my MacBook Pro, I am supposed to run the battery all the way down and recharge it every couple of months to 'calibrate' it. So it sounds as if it is supposed to go through
periodic charge cycles to maintain its storage capacity.
I don't believe that this is intended, at least directly, to maintain its storage capacity. I believe that this process is meant to give an accurate measurement of the current storage capacity. It may well be that one use of this would be to help manage things for longer battery life.
LiIon batteries shouldn't need charge cycles; to the contrary, charge cycles shorten their life (though they do, as you point out, give the microcontroller an estimate of capacity)
The reason for the 'charge it up to 50%' thing when the battery isn't being used is because if the battery goes down too low, it won't charge at all any more. The reason for bringing it _down_ to 50% is that the battery ages faster -- much faster -- when it is full.
This page goes into all of it:
And reminds me I ought to see if my old TiBook battery is still good. --
There's no such thing as a free lunch, but certain accounting practices can result in a fully-depreciated one.