I am using iPhone 11 Max Pro for about 14 months. My battery capacity has dropped to 91 % even though I am not a heavy user and charge the device once a day with the original fast charger. Is this normal? I feel the deterioration is faster than expected. Please share your comments. Tq
iPhone 11 Pro Max
That’s pretty good for 14 months. Do you charge it overnight, with Optimized Charging enabled?
Batteries are consumables; they lose a little capacity every time they are discharged, then recharged. On average this works out to about a 1% loss for every 25 “full charge cycles”. As one example, if you charge the phone overnight, every night (and that is what you should do; it is a best practice), it starts the day at 100%. If it drops to 20% by the end of the day before you charge it again overnight that counts as 0.8 full charge cycles (20% to 100%), or about 24 full charge cycles per month of use. For this example your battery capacity will lose about 1% per month. Of course, if the end-of-day level is higher than 20% the capacity loss will be a little less, and if it is lower than 20%, or you charge it during the day, the capacity loss will be higher.
The absolute best way to improve the life of your battery long term is to enable Optimized Battery Charging (Settings/Battery/Battery Health) and charge the device overnight, every night. The battery will fast charge to 80%, then pause. During the night the phone will use mains power instead of battery power, allowing the battery to “rest”, and thus reducing the need to charge the battery quite as often. The phone will resume charging to reach 100% when you are ready to use your phone; it will “learn” your usage pattern.
You also should update to 14.5.1 if you haven’t already. See this reason why→About recalibration of battery health reporting in iOS 14.5 - Apple Support
That’s pretty good for 14 months. Do you charge it overnight, with Optimized Charging enabled?
Batteries are consumables; they lose a little capacity every time they are discharged, then recharged. On average this works out to about a 1% loss for every 25 “full charge cycles”. As one example, if you charge the phone overnight, every night (and that is what you should do; it is a best practice), it starts the day at 100%. If it drops to 20% by the end of the day before you charge it again overnight that counts as 0.8 full charge cycles (20% to 100%), or about 24 full charge cycles per month of use. For this example your battery capacity will lose about 1% per month. Of course, if the end-of-day level is higher than 20% the capacity loss will be a little less, and if it is lower than 20%, or you charge it during the day, the capacity loss will be higher.
The absolute best way to improve the life of your battery long term is to enable Optimized Battery Charging (Settings/Battery/Battery Health) and charge the device overnight, every night. The battery will fast charge to 80%, then pause. During the night the phone will use mains power instead of battery power, allowing the battery to “rest”, and thus reducing the need to charge the battery quite as often. The phone will resume charging to reach 100% when you are ready to use your phone; it will “learn” your usage pattern.
You also should update to 14.5.1 if you haven’t already. See this reason why→About recalibration of battery health reporting in iOS 14.5 - Apple Support
Yes, I charge it overnight with Optimised charging enabled. Because I am not a heavy user, the balance could be 30 to 60% balance. I noticed the device gets warm a short while I plugged it in the charger.
bc180 wrote:
Yes, I charge it overnight with Optimised charging enabled. Because I am not a heavy user, the balance could be 30 to 60% balance. I noticed the device gets warm a short while I plugged it in the charger.
Ah, yes; there’s no way to avoid the 2nd Law of Thermodynamics. All energy transfer is less than 100% efficient, and the difference between how much energy you put in and how much actually gets to charge (or discharge) the battery appears as heat.
iPhone 11max pro battery deterioration rate.
