iPhone 15 Pro Max New iPhone 15 Pro Max battery worse than old iPhone 13 Pro Max?

[jennyp]

Just bought an iPhone 15 Pro Max, and during the 14-day return period I thought I'd see how it compares to my existing (16 month-old) iPhone 13 Pro Max (which according to the Settings app has a maximum capacity of 95%).

One thing that's puzzling me is that, even when both phones are mostly configured the same way (except that the SIM is in the new iPhone 15 Pro Max, so the old iPhone 13 Pro Max has no mobile), the old iPhone 13 Pro Max battery is holding more of a charge for longer than this new iPhone 15 Pro Max.

Like, after charging both overnight, and having done nothing special on either phone this morning, apart from just checking the home-screens a few times, the new iPhone 15 Pro Max has already gone down to 89%, while the old iPhone 13 Pro Max is still at 100%.

How is this possible? Do batteries in new iPhones need a while before they settle in, or calibrate or something?

I'm really confused as to whether or not I should return this iPhone 15 Pro Max, despite its questionable bells and whistles, and keep the iPhone 13 Pro Max. The ability to hold a battery charge would be a big factor.

 

[internetrando]

Give it a week before even thinking about battery comparisons.

Phone has to download everything, index, and do whatever else it does before it chills out.

I would expect them to perform similarly.

 

[jennyp]

Give it a week before even thinking about battery comparisons.

Phone has to download everything, index, and do whatever else it does before it chills out.

I would expect them to perform similarly.

Oh I didn't realise the new one was doing stuff in the background. I'll wait a week. Thank you!

 

[jamdex]

I'm coming from the 13PM to the 15PM and i'm a little disappointed with the battery. Seems to be on-par with my 86% 13MP and i'd obviously expect slightly better.

 

[jennyp]

I was just wondering - if I return this new iPhone 15 Pro Max, and keep the old 13 Pro Max with its battery's "maximum capacity" of 95% - is there any way of knowing how long "95% maximum capacity" would take me?

I don't understand these figures. "95%" sounds good, but as I understand it, if it falls below 80% then you need a new battery. Presumably I could always get one for this older phone if it went below that 80%?

 

[BuggyGT]

It is impossible to give you an estimate on how long 95% maximum capacity may last cause everyone has different usage patterns. For me I play alot of games and watch videos so I probably drain batteries faster than someone who only uses the iPhone for web usage/texting/calls.

However what 95% battery capacity means is if you take the average battery capacity listed for the 13PM which is officially 4352mAh, 95% left of that would be 4134mAh and that battery can no longer charge to the original maximum amount and will gradually get lower as the percentage falls. You can use also an app like Coconut Battery on a Mac to check the numbers.

 

[PaladinGuy]

Another thing to think about, if you haven’t already, is whether or not you have Always On Display (AOD) turned on. That obviously makes battery drop quicker on the iPhone 15 Pros.

 

[shady16]

Just bought an iPhone 15 Pro Max, and during the 14-day return period I thought I'd see how it compares to my existing (16 month-old) iPhone 13 Pro Max (which according to the Settings app has a maximum capacity of 95%).

One thing that's puzzling me is that, even when both phones are mostly configured the same way (except that the SIM is in the new iPhone 15 Pro Max, so the old iPhone 13 Pro Max has no mobile), the old iPhone 13 Pro Max battery is holding more of a charge for longer than this new iPhone 15 Pro Max.

Like, after charging both overnight, and having done nothing special on either phone this morning, apart from just checking the home-screens a few times, the new iPhone 15 Pro Max has already gone down to 89%, while the old iPhone 13 Pro Max is still at 100%.

How is this possible? Do batteries in new iPhones need a while before they settle in, or calibrate or something?

I'm really confused as to whether or not I should return this iPhone 15 Pro Max, despite its questionable bells and whistles, and keep the iPhone 13 Pro Max. The ability to hold a battery charge would be a big factor.

ive went from 13PM to 14PM to 15PM and i can tell you the 13PM had the best battery life of the 3, if you want to make it comparable to your 13PM wait until its done indexing and if it still isnt try turning off always on display

 

[jennyp]

Another thing to think about, if you haven’t already, is whether or not you have Always On Display (AOD) turned on. That obviously makes battery drop quicker on the iPhone 15 Pros.

Yes that was one of the first things I did with the 15PM when I set it up, and before I started comparing the two.

 

[Kobs]

15 PM

 

[jennyp]

ive went from 13PM to 14PM to 15PM and i can tell you the 13PM had the best battery life of the 3

So are you saying that you remember your old 13PM going for more hours in the day (before you'd have to recharge it) than the 15PM does now? That's like my experience now, but when my 13PM is 16 months old and 95% max capacity (though I am still testing, as internetrando recommended).

How long you can get out of a charge in the day is probably more important to me than how many months in total the battery lives, since you can always buy a new one.

I am so confused as to what to do.

 

[UKapple73]

Without a mobile connection it’s no wonder the 13 pro max lasted much longer. Particularly if your signal isn’t that great, it will use a fair bit of battery just maintaining the connection