Is there battery bypass on iPad Pro M4 and the iPhones? I use my iPad with 80% limit on and it’s always charging at that percent. Is that bad for the battery or does it run on power supply?
[Re-Titled by Moderator]
iPad Pro, iPadOS 18
Your iPad is fully usable while connected to its Power Adapter or other USB power source.
Your iPad will suffer no ill effects through being connected to its Power Adapter or other source of power for extended periods. Your iPad will automatically regulate and optimise charging - and will not overcharge the battery.
More information about iPad’s battery management can be found here:
About iPad and iPhone Charge Management Feature – Apple Support
About the iPad and iPhone charge-management feature – Apple Support
When connected to a Power Adapter for an extended period of time, such as when used in Kiosk or PoS (Point if Sale) applications, iPad will automatically change its charge management strategy - and reduce the maximum battery charge level to about 80% of maximum capacity.
This strategy is intended to extend the life of the battery by reducing chemical ageing that occurs when the battery is continuously maintained 100% charge. As soon as a “normal” charge/discharge pattern is resumed, charge to full capacity is restored.
Your iPad is fully usable while connected to its Power Adapter or other USB power source.
Your iPad will suffer no ill effects through being connected to its Power Adapter or other source of power for extended periods. Your iPad will automatically regulate and optimise charging - and will not overcharge the battery.
More information about iPad’s battery management can be found here:
About iPad and iPhone Charge Management Feature – Apple Support
About the iPad and iPhone charge-management feature – Apple Support
When connected to a Power Adapter for an extended period of time, such as when used in Kiosk or PoS (Point if Sale) applications, iPad will automatically change its charge management strategy - and reduce the maximum battery charge level to about 80% of maximum capacity.
This strategy is intended to extend the life of the battery by reducing chemical ageing that occurs when the battery is continuously maintained 100% charge. As soon as a “normal” charge/discharge pattern is resumed, charge to full capacity is restored.
"Battery Bypass" is not a term used by Apple - and as such does not appear anywhere in its product specifications. Perhaps this will provide the answer to your question...
All models of iPad and iPhone continuously use their built-in battery - but will also draw power from an adequate external power source while it is connected. If the external power source can provide sufficient power for the instantaneous load, all the iPad's power needs can be met from the external source.
If instantaneous power needs cannot be met by the external source alone, the battery will share the load providing additional power when required.
"Battery health" is influenced by many factors, but in the main by the total number of full recharge cycles that accumulate over time.
An iPad battery is rated to retain 80% of its original capacity (when new) after 1000 full recharge cycles. Any combination of charging that together sums to 100% equates to one full charge cycle (e.g., 50% + 20% + 20% + 10% = 100% = 1 full charge cycle). As such, reducing the number of times that the iPad is recharged will slow the rate that the iPad's battery health will decline due to recharging.
Other factors can influence overall battery health. High ambient temperatures can permanently reduce the battery's ability to retain full charge - as can maintaining the battery at 100% charge for very long periods of time that leads to chemical aging of the battery. Limiting the battery charge to ~80% of maximum is intended to reduce the chemical aging effect.
You should note that the iPad will periodically fully charge the battery - regardless of iPad settings - in order to maintain battery charge calibration.
You are perhaps over-thinking management of your iPad's battery. Be assured that your iPad is designed to automatically optimise its battery charging strategy. Using your iPad while connected to external power for extended periods reduces the number of charge cycles, potentially extending the usable life of the iPad, without detriment to the battery.
Which iPad and iPhone have battery bypass?
Oh so let’s say the ipad is charging and is receiving adequate power for its activity then all power will come from the power source? Then that shouldn’t affect battery health then?
Is there battery bypass on iPad Pro M4 and iPhone?
