iPhone 11 Pro Max Battery health dropped 3% on one month. Normal?

[Septembersrain]

I've got an 11 Pro Max. It suddenly hit 99%, then within this same month it's gotten down to 97%. Is it normal to degrade quickly after dropping below 100%? Also, can an Apple store do a battery change without needing you to wipe or give access to device?

I do not want them to upgrade my iOS version.

 

[Apple_Robert]

It may go back up tomorrow or next week. The battery health is just an estimate.

Apple shouldn’t need to upgrade the OP or ask for a passcode. However, if you send in a device for a battery change, I suggest backing up your phone, then wiping it and install as new with just the stock apps. You can set the passcode to be 1234 if you like. That way, if a tech needs access to the device, 1234 can be used and there won’t be any personal information on the device.

 

[FeliApple]

I’d ignore battery health. The important number here, is battery life. As long as that doesn’t drop sharply, I wouldn’t be concerned, especially if you’re not updating iOS: I used an iPhone 6s for three years on iOS 9 and battery life remained constant throughout its lifespan. After I gave that phone to a family member, Apple forced me to update to iOS 13 by basically deactivating my phone. Battery life plummeted by 60%. I’d argue, therefore, that not updating iOS is far more important than the battery health.

As long as you keep it on the original version (I’m assuming it’s on iOS 13), battery health doesn’t really matter. (Another iPad affected by the same thing was at 83% on iOS 9 with a minimal battery life drop. I updated (by force, thanks Apple), and battery life plummeted).

 

[BigMcGuire]

Not normal. Do you have a Mac? Get coconutBattery and see if that shows anything weird. I've seen a few other posts of people saying the same thing recently (health dropping).

 

[Septembersrain]

Not normal. Do you have a Mac? Get coconutBattery and see if that shows anything weird. I've seen a few other posts of people saying the same thing recently (health dropping).

I don't unfortunately. Yeah, though I thought it had to do with iOS updates but maybe not? I'm still on the original iOS 13.3.

 

[AppleB]

iPhone battery and performance - Apple Support

Understand iPhone performance and its relation to your battery.

support.apple.com

Chemical age of the battery is a key point in this article.

 

[nordique]

Not normal IMO.
My 11 Pro stayed at 100% for almost 9 months

 

[BigMcGuire]

I don't unfortunately. Yeah, though I thought it had to do with iOS updates but maybe not? I'm still on the original iOS 13.3.

I use iMazing on Windows (if you're willing to pay for it) - to get coconutBattery like stats. Kinda expensive tho.

Interesting still on the original iOS. I wonder if Apple changed something remotely? I really don't know. Worse case scenario, the battery is dying a quick death. Most likely a software issue (rare for batteries to drop this fast).

 

[Septembersrain]

Not normal IMO.
My 11 Pro stayed at 100% for almost 9 months

It just went from 99 to 97 in October. I got the device in January.

 

[Simacca]

My 11 pro has dropped to 93% after a year, using a third party wireless charger.

 

[johannnn]

It's just an estimate. Most numbers I've seen here on MR have been ~6% per year.
I.e. for people that update yearly, their old phone have 94%. (I know there are outliners, some people claim they have magical batteries that stay 100% after a year.)
I'm about to sell my iPhone 11 and have 93% now.

So if you got your phone in January, then 97% sounds NORMAL.