Re: Battery care - Macbook Air

[Stephen Chape]

I am still with you Ronni.
But my grand daughter is a different matter !

> On 24 Jan 2019, at 6:15 pm, Ronni Brown  wrote:
> 
> Hi Stephen,
> 
> Graham’s post which I replied to was regarding his MacBook Air’s battery not 
> an iPhones battery!
> 
> You can believe the Apple Store if you wish, that’s your choice, but I’ll 
> stick with my original post on how to charge lithium-ion batteries on my 
> iPhone.
> 
> “According to Battery University, the lithium-ion battery in your smartphone 
> will last longest if you keep it 65% to 75% charged at all times.
> 
> Clearly, it’s impractical to always keep your phone charge between those 
> levels – but at least you know what’s ideal.
> 
> If you can’t do that, shoot for keeping its charge level between 45% and 75%.
> Charging to 100%, or overnight? Fully discharging before plugging in? These 
> common practices can shorten the usable life of your battery, according to 
> Cadex , a company that offers devices that test 
> smartphone batteries, among others.
> 
> Cadex offers a lot of information on its Battery University website 
> , including about lithium-ion batteries – the 
> type that powers smartphones.”
> 
> Kind regards,
> Ronni
> 
>  Ronni Brown’s iPad Pro 12.9-inch 256GB 
> 
> 
> On 24 Jan 2019, at 2:43 pm, Stephen Chape  > wrote:
> 
>> Hi folks.
>> Took my grand daughter to the Apple Store in Perth a couple of weeks ago to 
>> get new battery in her iPhone 6.
>> They tested it and said it did not need a new battery.
>> 
>> But they did say that she was charging it too frequently.
>> We were told to let it get as low as possible then charge up to 100%.
>> They said the more often it is charged, the faster the battery will wear out.
>> So do not keep giving it “top ups”.
>> 
>>> On 22 Jan 2019, at 5:39 pm, Graham Rabe >> > wrote:
>>> 
>>> Hello WAMUGers,
>>> 
>>> What is best practice when it comes to charging Apple laptops? When at 
>>> home, should I just leave the charger plugged in all the time or would that 
>>> not be a good idea? I remember Ronni’s tips about charging the phones (keep 
>>> level between 40% and 80% - and regular charges to that end better than 
>>> getting too low and then ramping up to 100%). For example - is leaving the 
>>> charger plugged in on the laptop for 3 or 4 days a no-no?
>>> 
>>> Cheers,
>>> 
>>> Graham 
>>> 
>>> Macbook Air 2017
>>> Mojave 10.14.2
>>> 
>>> 
>>> 
>>> 
>>> Graham Rabe | Barrister & Solicitor | Commercial Litigation Consultant & 
>>> Mediator
>>> Suite 94, 50 St Georges  Terrace, Perth WA 6000
>>> M: +61 417 949 825 
>>> E: gra...@rabe.com.au 
>>> Web: www.rabe.com.au 
>>>  
>>> This email and any attachments may be confidential and subject to copyright 
>>> or legal professional privilege. If you received this email in error, 
>>> please inform the sender immediately, delete it and do not use, copy or 
>>> disclose it. 
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Regards,
Stephen Chape






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Re: Battery care - Macbook Air

[Ronni Brown]

Hi Stephen,

Graham’s post which I replied to was regarding his MacBook Air’s battery not an 
iPhones battery!

You can believe the Apple Store if you wish, that’s your choice, but I’ll stick 
with my original post on how to charge lithium-ion batteries on my iPhone.

“According to Battery University, the lithium-ion battery in your smartphone 
will last longest if you keep it 65% to 75% charged at all times.

Clearly, it’s impractical to always keep your phone charge between those levels 
– but at least you know what’s ideal.

If you can’t do that, shoot for keeping its charge level between 45% and 75%.
Charging to 100%, or overnight? Fully discharging before plugging in? These 
common practices can shorten the usable life of your battery, according to 
Cadex, a company that offers devices that test smartphone batteries, among 
others.

Cadex offers a lot of information on its Battery University website, including 
about lithium-ion batteries – the type that powers smartphones.”

Kind regards,
Ronni

 Ronni Brown’s iPad Pro 12.9-inch 256GB 


> On 24 Jan 2019, at 2:43 pm, Stephen Chape  wrote:
> 
> Hi folks.
> Took my grand daughter to the Apple Store in Perth a couple of weeks ago to 
> get new battery in her iPhone 6.
> They tested it and said it did not need a new battery.
> 
> But they did say that she was charging it too frequently.
> We were told to let it get as low as possible then charge up to 100%.
> They said the more often it is charged, the faster the battery will wear out.
> So do not keep giving it “top ups”.
> 
>> On 22 Jan 2019, at 5:39 pm, Graham Rabe  wrote:
>> 
>> Hello WAMUGers,
>> 
>> What is best practice when it comes to charging Apple laptops? When at home, 
>> should I just leave the charger plugged in all the time or would that not be 
>> a good idea? I remember Ronni’s tips about charging the phones (keep level 
>> between 40% and 80% - and regular charges to that end better than getting 
>> too low and then ramping up to 100%). For example - is leaving the charger 
>> plugged in on the laptop for 3 or 4 days a no-no?
>> 
>> Cheers,
>> 
>> Graham 
>> 
>> Macbook Air 2017
>> Mojave 10.14.2
>> 
>> 
>> 
>> 
>> Graham Rabe | Barrister & Solicitor | Commercial Litigation Consultant & 
>> Mediator
>> Suite 94, 50 St Georges  Terrace, Perth WA 6000
>> M: +61 417 949 825 
>> E: gra...@rabe.com.au
>> Web: www.rabe.com.au
>>  
>> This email and any attachments may be confidential and subject to copyright 
>> or legal professional privilege. If you received this email in error, please 
>> inform the sender immediately, delete it and do not use, copy or disclose 
>> it. 
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Re: Battery care - Macbook Air

[Stephen Chape]

Hi folks.
Took my grand daughter to the Apple Store in Perth a couple of weeks ago to get 
new battery in her iPhone 6.
They tested it and said it did not need a new battery.

But they did say that she was charging it too frequently.
We were told to let it get as low as possible then charge up to 100%.
They said the more often it is charged, the faster the battery will wear out.
So do not keep giving it “top ups”.

> On 22 Jan 2019, at 5:39 pm, Graham Rabe  wrote:
> 
> Hello WAMUGers,
> 
> What is best practice when it comes to charging Apple laptops? When at home, 
> should I just leave the charger plugged in all the time or would that not be 
> a good idea? I remember Ronni’s tips about charging the phones (keep level 
> between 40% and 80% - and regular charges to that end better than getting too 
> low and then ramping up to 100%). For example - is leaving the charger 
> plugged in on the laptop for 3 or 4 days a no-no?
> 
> Cheers,
> 
> Graham 
> 
> Macbook Air 2017
> Mojave 10.14.2
> 
> 
> 
> 
> Graham Rabe | Barrister & Solicitor | Commercial Litigation Consultant & 
> Mediator
> Suite 94, 50 St Georges  Terrace, Perth WA 6000
> M: +61 417 949 825 
> E: gra...@rabe.com.au 
> Web: www.rabe.com.au 
>  
> This email and any attachments may be confidential and subject to copyright 
> or legal professional privilege. If you received this email in error, please 
> inform the sender immediately, delete it and do not use, copy or disclose it. 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -- The WA Macintosh User Group Mailing List --
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Regards,
Stephen Chape






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Re: Battery care - Macbook Air

[Graham Rabe]

Thanks a lot Ronni. 

You have very kindly extended my battery's life. 

Cheers,

Graham 


Graham Rabe | Barrister & Solicitor | Commercial Litigation Consultant & 
Mediator
Suite 94, 50 St Georges  Terrace, Perth WA 6000
M: +61 417 949 825 
E: gra...@rabe.com.au
Web: www.rabe.com.au
 
This email and any attachments may be confidential and subject to copyright or 
legal professional privilege. If you received this email in error, please 
inform the sender immediately, delete it and do not use, copy or disclose it. 














> On 22 Jan 2019, at 6:57 pm, Ronni Brown  wrote:
> 
> Hello Graham,
> Probably best for you first to have a read at Apple Support:
> 
> About Mac notebook batteries
> Learn how to optimize the life of the battery in your Mac notebook, fix 
> battery issues, and get service.
> 
> Understanding batteries in Mac notebooks
> MacBook, MacBook Air, and MacBook Pro computers come with lithium polymer 
> batteries to provide maximum battery life in a compact space. To understand 
> battery technology and battery life, it's good to know common battery 
> terminology:
> Cycle count: Batteries are expected to function for a certain number of 
> cycles. This number represents the sum of total and partial discharge cycles 
> throughout the life of the battery. You can see the cycle count limit for 
> your computer by reviewing Determining battery cycle count for Mac notebooks 
> .
> Full charge capacity: Measured in mAH (milliampere-hours), this refers to the 
> amount of power the battery is capable of containing, less the energy 
> required to shut down the device. This number lowers as the battery becomes 
> depleted with usage and age.
> Remaining charge capacity: This number represents the current amount of power 
> left in the battery as measured in mAh (milliampere-hours). Using the 
> computer when not connected to AC power will cause this number to lower as 
> power is depleted from the battery.
> Consumed / depleted: Consumable parts are those that deplete over time as 
> their internal components are used. Batteries, due to their chemical 
> components, are considered consumables, and over time they lose their ability 
> to hold a charge. If the cycle count on a battery exceeds its expected limit 
> , the battery is considered consumed.
> Defective: Batteries are considered defective when they stop working due to a 
> defect in materials or workmanship, or due to a manufacturing defect. 
> Defective batteries are covered under Apple's one-year limited warranty and 
> extended-service contracts.
> Load: The amount of activity being performed by a task or tasks. Certain 
> power-intensive processes place a heavier load on the battery and result in a 
> much-reduced runtime per charge.
> https://support.apple.com/en-au/HT204054#bright 
> 
> 
> To summarize the key points:
> When you run your MacBook Air plugged into external power and it's charged to 
> 100%, you're not using the battery at all – you're simply running from 
> external power.
> You cannot overcharge your MacBook Air battery. The charging circuit cuts off 
> when it hits 100%, at which point it runs from external power.
> The life of a rechargeable battery is measured in cycles. One full discharge 
> and recharge is a single "cycle." Discharging to 50% and recharging is 1/2 of 
> a cycle, and so forth. 
> If you don't discharge your MacBook at all, you're basically using zero 
> cycles, which will obviously extend your rechargeable battery life when you 
> do need it.
> The only caveat is that you do need to do one complete discharge/recharge 
> cycle about once per month to "exercise" the battery. If you leave your 
> MacBook plugged in all the time, it's pretty much the same as leaving it OFF 
> all the time, since the battery doesn't get used at all. 
> This "one complete cycle per month" can be cumulative -- it doesn't have to 
> be a time when you drain it zero and recharge it. Draining it to 80% five 
> times per month, or 90% ten times per month would still count as a single 
> cycle. 
> In summary, you don't need to sweat too much about battery life. Leaving your 
> MacBook Air plugged in most of the time will not hurt your battery life, as 
> long as you're not leaving it plugged in ALL the time. 
> Work from your couch :)) for a few hours without plugging in a couple of 
> times per month and that's really all you need to worry about.
> 
> Cheers,
> Ronni
> 
>  Ronni Brown’s iPad Pro 12.9-inch 256GB 
> 
> 
> On 22 Jan 2019, at 5:39 pm, Graham Rabe  > wrote:
> 
>> Hello WAMUGers,
>> 
>> What is best practice when it comes to charging Apple laptops? When at home, 
>> should I just leave the charger plugged in all the time or would that not be 
>> a good idea? I remember Ronni’s tips about charging the phones (keep level 
>> between 40% and 80% 

Re: Battery care - Macbook Air

[Ronni Brown]

Hello Graham,
Probably best for you first to have a read at Apple Support:

About Mac notebook batteries
Learn how to optimize the life of the battery in your Mac notebook, fix battery 
issues, and get service.

Understanding batteries in Mac notebooks
MacBook, MacBook Air, and MacBook Pro computers come with lithium polymer 
batteries to provide maximum battery life in a compact space. To understand 
battery technology and battery life, it's good to know common battery 
terminology:
Cycle count: Batteries are expected to function for a certain number of cycles. 
This number represents the sum of total and partial discharge cycles throughout 
the life of the battery. You can see the cycle count limit for your computer by 
reviewing Determining battery cycle count for Mac notebooks.
Full charge capacity: Measured in mAH (milliampere-hours), this refers to the 
amount of power the battery is capable of containing, less the energy required 
to shut down the device. This number lowers as the battery becomes depleted 
with usage and age.
Remaining charge capacity: This number represents the current amount of power 
left in the battery as measured in mAh (milliampere-hours). Using the computer 
when not connected to AC power will cause this number to lower as power is 
depleted from the battery.
Consumed / depleted: Consumable parts are those that deplete over time as their 
internal components are used. Batteries, due to their chemical components, are 
considered consumables, and over time they lose their ability to hold a charge. 
If the cycle count on a battery exceeds its expected limit, the battery is 
considered consumed.
Defective: Batteries are considered defective when they stop working due to a 
defect in materials or workmanship, or due to a manufacturing defect. Defective 
batteries are covered under Apple's one-year limited warranty and 
extended-service contracts.
Load: The amount of activity being performed by a task or tasks. Certain 
power-intensive processes place a heavier load on the battery and result in a 
much-reduced runtime per charge.
https://support.apple.com/en-au/HT204054#bright

To summarize the key points:
When you run your MacBook Air plugged into external power and it's charged to 
100%, you're not using the battery at all – you're simply running from external 
power.
You cannot overcharge your MacBook Air battery. The charging circuit cuts off 
when it hits 100%, at which point it runs from external power.
The life of a rechargeable battery is measured in cycles. One full discharge 
and recharge is a single "cycle." Discharging to 50% and recharging is 1/2 of a 
cycle, and so forth. 
If you don't discharge your MacBook at all, you're basically using zero cycles, 
which will obviously extend your rechargeable battery life when you do need it.
The only caveat is that you do need to do one complete discharge/recharge cycle 
about once per month to "exercise" the battery. If you leave your MacBook 
plugged in all the time, it's pretty much the same as leaving it OFF all the 
time, since the battery doesn't get used at all. 
This "one complete cycle per month" can be cumulative -- it doesn't have to be 
a time when you drain it zero and recharge it. Draining it to 80% five times 
per month, or 90% ten times per month would still count as a single cycle. 
In summary, you don't need to sweat too much about battery life. Leaving your 
MacBook Air plugged in most of the time will not hurt your battery life, as 
long as you're not leaving it plugged in ALL the time. 
Work from your couch :)) for a few hours without plugging in a couple of times 
per month and that's really all you need to worry about.

Cheers,
Ronni

 Ronni Brown’s iPad Pro 12.9-inch 256GB 


> On 22 Jan 2019, at 5:39 pm, Graham Rabe  wrote:
> 
> Hello WAMUGers,
> 
> What is best practice when it comes to charging Apple laptops? When at home, 
> should I just leave the charger plugged in all the time or would that not be 
> a good idea? I remember Ronni’s tips about charging the phones (keep level 
> between 40% and 80% - and regular charges to that end better than getting too 
> low and then ramping up to 100%). For example - is leaving the charger 
> plugged in on the laptop for 3 or 4 days a no-no?
> 
> Cheers,
> 
> Graham 
> 
> Macbook Air 2017
> Mojave 10.14.2
> 
> 
> 
> 
> Graham Rabe | Barrister & Solicitor | Commercial Litigation Consultant & 
> Mediator
> Suite 94, 50 St Georges  Terrace, Perth WA 6000
> M: +61 417 949 825 
> E: gra...@rabe.com.au
> Web: www.rabe.com.au
>  
> This email and any attachments may be confidential and subject to copyright 
> or legal professional privilege. If you received this email in error, please 
> inform the sender immediately, delete it and do not use, copy or disclose it. 
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Battery care - Macbook Air

[Graham Rabe]

Hello WAMUGers,

What is best practice when it comes to charging Apple laptops? When at home, 
should I just leave the charger plugged in all the time or would that not be a 
good idea? I remember Ronni’s tips about charging the phones (keep level 
between 40% and 80% - and regular charges to that end better than getting too 
low and then ramping up to 100%). For example - is leaving the charger plugged 
in on the laptop for 3 or 4 days a no-no?

Cheers,

Graham 

Macbook Air 2017
Mojave 10.14.2




Graham Rabe | Barrister & Solicitor | Commercial Litigation Consultant & 
Mediator
Suite 94, 50 St Georges  Terrace, Perth WA 6000
M: +61 417 949 825 
E: gra...@rabe.com.au
Web: www.rabe.com.au
 
This email and any attachments may be confidential and subject to copyright or 
legal professional privilege. If you received this email in error, please 
inform the sender immediately, delete it and do not use, copy or disclose it. 














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