SOT: iPad battery

[Scott]

My new iPad Mini has an option to stop charging the battery when it
reaches 80%. Is this a good idea? I thought battery life was
determined by the number of charge cycles. If it is only an 80%
charge, it will need to be charged more often. I also thought the
software optimised charging to prevent over-charging.

[Tweed]

Post by Scott
My new iPad Mini has an option to stop charging the battery when it
reaches 80%. Is this a good idea? I thought battery life was
determined by the number of charge cycles. If it is only an 80%
charge, it will need to be charged more often. I also thought the
software optimised charging to prevent over-charging.

This might help:

https://electronics.stackexchange.com/questions/623358/wouldnt-charging-a-lithium-battery-to-80-only-defeat-the-purpose-of-putting-th

Put simply, fully discharging or fully charging a lithium ion battery is
detrimental to its lifespan. When you see 0% it isn’t really empty. Some
charge is always left by the battery management circuit. Likewise, choosing
to charge to 80% is better for lifespan but at the detriment of run time.
If you know you are going to need a longer run time it doesn’t really hurt
to charge to 100% one in a while. In fact Apple state your iPad will do
this automatically from time to time, even if you have it set to 80%.
Battery chemistry and use is a complicated subject.

[Scott]

On Sun, 17 Nov 2024 16:35:20 -0000 (UTC), Tweed

Post by Tweed

Post by Scott
My new iPad Mini has an option to stop charging the battery when it
reaches 80%. Is this a good idea? I thought battery life was
determined by the number of charge cycles. If it is only an 80%
charge, it will need to be charged more often. I also thought the
software optimised charging to prevent over-charging.

https://electronics.stackexchange.com/questions/623358/wouldnt-charging-a-lithium-battery-to-80-only-defeat-the-purpose-of-putting-th
Put simply, fully discharging or fully charging a lithium ion battery is
detrimental to its lifespan. When you see 0% it isn’t really empty. Some
charge is always left by the battery management circuit. Likewise, choosing
to charge to 80% is better for lifespan but at the detriment of run time.
If you know you are going to need a longer run time it doesn’t really hurt
to charge to 100% one in a while. In fact Apple state your iPad will do
this automatically from time to time, even if you have it set to 80%.
Battery chemistry and use is a complicated subject.

Thank you. This certainly persuades me to accept Apple's offer to
restrict the charge to 80%.

[alan_m]

Post by Scott
On Sun, 17 Nov 2024 16:35:20 -0000 (UTC), Tweed

Post by Tweed

Post by Scott
My new iPad Mini has an option to stop charging the battery when it
reaches 80%. Is this a good idea? I thought battery life was
determined by the number of charge cycles. If it is only an 80%
charge, it will need to be charged more often. I also thought the
software optimised charging to prevent over-charging.

https://electronics.stackexchange.com/questions/623358/wouldnt-charging-a-lithium-battery-to-80-only-defeat-the-purpose-of-putting-th
Put simply, fully discharging or fully charging a lithium ion battery is
detrimental to its lifespan. When you see 0% it isn’t really empty. Some
charge is always left by the battery management circuit. Likewise, choosing
to charge to 80% is better for lifespan but at the detriment of run time.
If you know you are going to need a longer run time it doesn’t really hurt
to charge to 100% one in a while. In fact Apple state your iPad will do
this automatically from time to time, even if you have it set to 80%.
Battery chemistry and use is a complicated subject.

Thank you. This certainly persuades me to accept Apple's offer to
restrict the charge to 80%.

My Samsung phone comes with the option to only charge to 80% to prolong
the life of the battery.

My Huawei laptop comes with some software to do the same and for the
same given reason. On the laptop this only works as long as the laptop
is operational or in sleep mode. If the laptop is fully shut down the
software cannot run and if the charging lead is left in the laptop
battery will charge to 100%.

Tips for power saving
https://bouncepad.com/blogs/resources/maximize-ipad-battery