Apple reveals the real capacity behind the 11 Pro Max's record battery life

Apple reveals the real capacity behind the 11 Pro Max's record battery life
We have been wondering what's the secret behind the iPhone 11 Pro Max that has the best battery life of any iPhone so far, and the speculated 3500mAh, or even the earlier 3650mAh rumor couldn't explain the whole picture. 

Granted, the new OLED display generation and more efficient A13 chipset add to the record real-life battery endurance of the phone, but they still can't be adding 5 more hours to the battery life of the phone as Apple claims in the specs sheet. 

Said five hours are more than a 30% increase over the 15 hours of video playback that the XS Max offers, and a 10-15% bump in battery capacity doesn't cut it, even with the new screen/chipset combo.

That's because the actual battery capacity of the iPhone 11 Pro Max is much, much larger than previously thought, and the huge increase was just confirmed by two separate sources, one of which is Apple itself. 

In a legal filing (PDF) regarding the battery pack safety certification requirements of its devices, Apple lists the iPhone 11 Pro Max as having a 15.04 Wh capacity, compared to the 12.08 Wh of its XS Max predecessor.


At a typical 3.79V battery voltage, it amounts to a 24.5% increase, and if you are wondering how much is that in the good ol' milliampere-hour (mAh or milliamp-hour), the Chinese equivalent of the FCC, abbreviated TENAA, just revealed the actual capacity in an easily digestible amount - 3969mAh. 


Yep, the iPhone 11 Pro Max delivers 33% longer battery life than the XS Max because its battery is 25% larger, and the screen or chipset are about 10% more efficient than before. Makes sense. Here's the full breakdown from Apple's legally required battery filings:

iPhone XR - 11.16 Whr
iPhone 11 - 11.91 Whr (+7%)

iPhone XS - 10.13 Whr
iPhone 11 Pro - 11.67 Whr (+15%)

iPhone XS Max - 12.08 Whr
iPhone 11 Pro Max - 15.04 Whr (+25%)

Related phones

iPhone 11 Pro Max
  • Display 6.5" 1242 x 2688 pixels
  • Camera 12 MP / 12 MP front
  • Processor Apple A13 Bionic, Hexa-core, 2650 MHz
  • Storage 64 GB
  • Battery 3969 mAh

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55 Comments

2. Iodine

Posts: 1493; Member since: Jun 19, 2014

For the 11 Pro this is the biggest battery size increse ever. Just amazing. Android phones no longer have self called “adventage” of bigger batteries as Apple has matched them in very compact form formfactors like last year. Add in the most efficient SoC, display ever in a smartphone and their custom power managment chip and there is no contest. Apple has won on yet another metric and they will hold tight to it. Next year even more battery is needed just to compensate for 5G that is. Can not wait.

4. TheOracle1

Posts: 2329; Member since: May 04, 2015

Congratulations to Apple for finally listening to their customers. Now sites like this one won't have to fudge the numbers. I'm very curious to see what other more credible battery tests come up with now it's an even playing field. PA and Apple both conveniently leave talk-time out of their tests.

17. Dr.Phil

Posts: 2427; Member since: Feb 14, 2011

Is talk time that important? In a world of texting and multimedia consumption on our smartphones, I don’t think people are doing a whole lot of talking. In fact, I just looked up Samsung and OnePlus on the fly to see if they report any kind of battery life and they don’t. OnePlus just talks about their warp charging and the ability to last all day. Samsung is the same. So neither of those manufacturers report an actual battery usage in their specs or on the feature page.

24. Vancetastic

Posts: 1508; Member since: May 17, 2017

I use my phone as a....wait for it....phone! So yes, for me, and I would assume others, talk time is somewhat important. Don't arrogantly assume things.

48. Dr.Phil

Posts: 2427; Member since: Feb 14, 2011

Considering no other manufacturer reports talk time it isn’t just me assuming that the metric is no longer important to report. So no, there was no arrogance in my comment. Merely saying that considering the metrics that are reported which happen to be video and audio battery life seem to be more important than talk time.

12. MsPooks

Posts: 150; Member since: Jul 08, 2019

It only took them eight years to match Android device battery sizes, and the "compact form factors" they did it with are 25% heavier than Android phones with even bigger batteries. You must have missed the news about Androud phones with 6000mAh batteries.

28. apple-rulz

Posts: 2175; Member since: Dec 27, 2016

For eight years you've been obsessively watching Apple.

47. ScottsoNJ56

Posts: 124; Member since: Oct 01, 2017

For eight years we have been watching PA obsessively fawn over Apple products

51. Blazers

Posts: 750; Member since: Dec 05, 2011

At this time 8yrs ago, the iPhone was superior to any Android handsets. But of course the tables have turned since then.

36. darkkjedii

Posts: 31254; Member since: Feb 05, 2011

Apple kills in that bottom line, where everyone wants to match them though.

30. daplugg23

Posts: 1; Member since: Sep 18, 2019

You do know that Apple uses Samsung's displays.

39. oldskool50 unregistered

What? Many Android have 4000~6000MAH batteries. Apple is still far behind considering what you are paying. Android still has a significant advantage, when you consider the fact that other real flagships have had over 3000Mah Batteries since 2012. And considering the iPhone MAx, which is roughly the same size as the S+ and Note models, the S and Note are both above 4000MaH and they still do more than the iphone and last longer too, according to real life side by side battery rundown tests. You know, theose same tests that PA claims are convoluted because they actually show the phone doing the tasks, not some faked algorithmic set of scripts that can be tampered with and fixed so that one brand always tends to have the best battery-life, while real life tests say different. Android still has huge advantages, more features, bigger batteries, more storage, better and bigger displays, better audio/visual, better multi-tasking, better hardware where it matters and more. Continue cheerleading Apple as they only catch up to specs from 3 years ago.

44. aldude345

Posts: 12; Member since: Oct 20, 2013

Really what a fanboy haha. Wait until Samsung starts dropping graphene batteries next year. Next planet stuff there

46. ScottsoNJ56

Posts: 124; Member since: Oct 01, 2017

Absolutely, it is the best IPHONE. Smartphone? not so much lol

3. gadgetpower

Posts: 265; Member since: Aug 23, 2019

Almost 4000mah is really cool in an iPhone plus battery management in its software and hardware.

40. oldskool50 unregistered

Software management? You mean one app at a time? There are phones with similar sized batteries and have several more features and capabilities that last longer than an iPhone. Which means those phones have far better power management. Let's take the iPhone's actual real competitor, like the Galaxy S10's.. All of them have more hardware components inside, they have far and away more hardware capabilities, yet in battery rundown tests where these phones are taken through tasks, like a major game like Asphalt for an hour, and running the video camera, opening several apps and more; the iPhone continues to be one of the first phones to die. The vast majority of phones, usually don't last more than 4-6 hours of screen-on-time. There have been a few that hit 7 and 8, but those are even more rare. The iPhone 11 "could" be the first iPhone that might actually last a full work day. Which is nothign for me since my Note 9 last 2 complete 8 hour work days on a single charge. Something no iPhone model has ever done; and there are lots of Android's that don't last that long either. In this test,https://www.youtube.com/watch?v=rx-0QPOBiJg which DOES NOT include the iPhone 11, this test lasted for 9 hrs. The galaxy S10+ lasted over 9hrs, while the XS Max lasted on 7. Again, when you consider ALL FACTS, like the fact the galaxy S has more hardware inside vs ANY phone, except the Note, the fact Galaxy devices have full multi-tasking vs the iPhone "limited" multi-tasking abilities, less hardware and less software features; I would expect that the iPhone should last longer than Samsung flagships, and they simply do not. In almost EVERY major battery rundown tests, the iPhone has always fallen below 50% in just roughly 4 hours of usage, while even Galaxy devices still have 60~70% battery left. So the main question is, if the A-series chip is so efficient as everyone keeps claiming, that what else is possibly draining the battery so much? because it can't be the OLED display. It has to be the SoC. The SoC even on 7NM is not more efficient than Samsung chips done on 7~10NM technology.

55. Iodine

Posts: 1493; Member since: Jun 19, 2014

Asphalt 9 runs at full res and 60 fps on the iPhone. Also super retina display is nice but it is more power hungry than the liquid retina or other phone displays. And also the smallest battery and phone. Chip efficiency is generation ahead of others and now other things got addressed too.

5. riteshrkm

Posts: 157; Member since: Apr 15, 2015

Let others come up with Draining tests. According to PA apple always has been the Battery champ when rest of the world thinks otherwise!

6. Demo-jay

Posts: 77; Member since: Feb 13, 2018

Great!!!! Lol I can’t wait to laugh at this site’s battery tests...pretty sure it’s gonna last for 5 days on one charge..topping all others phones out there as always

8. darkkjedii

Posts: 31254; Member since: Feb 05, 2011

They’ve never said that before, for an iPhone. If you’re gonna blast PA, then you should come at them with factual comments, not blown up ones. This iPhone, if true, will have amazing battery life, way better than my Max, which already have great battery life. The Pro/Max is looking like the truth, don’t hate.

10. SaRPeR

Posts: 147; Member since: Mar 02, 2017

Even S10e has better battery life than every other iPhones that released last year. Just accept the fact that iPhones are bad when it comes to battery life. And don't believe Phonearena's battery life tests.

11. darkkjedii

Posts: 31254; Member since: Feb 05, 2011

Where in my post did I say I do, or don't believe in their tests? I also own a Max, and highly doubt the S10e has better battery life than it does. Prove it, if you have the source.

26. AmashAziz

Posts: 2931; Member since: Jun 30, 2014

Darkkjedii, bro, stop fighting with these guys. In the past few months I've seen a lot of people suddenly come up on this site thinking they are know-it-alls when in reality they know trash. i've argued with a lot of them here myself. You r a PA veteran. ignore these geniuses....

34. darkkjedii

Posts: 31254; Member since: Feb 05, 2011

If there’s proof, there’s proof, but I also own a Max, and a Note 9. My real world usage is about the same for the two devices, with the Note having a slight edge. See, when you don’t own both, but run your mouth about the one you hate, you don’t get credit from me. I use both extensively, and the Max is a beast too in the battery department. End of debate.

45. TheOracle1

Posts: 2329; Member since: May 04, 2015

I can't fault your real world experience but how you use your phone also matters. I rely on GSMArena because they test every aspect of the phone which includes talk-time and the Android Authority survey I posted above shows that phone calls are still important for many users. Phonearena and Apple don't include those figures which is ridiculous given it's a phone. Using that metric alone the XS Max is at 16hrs whilst most other flagships are above 20hrs with several easily above 30hrs. So the iPhone isn't very good at it's primary function.

32. darkkjedii

Posts: 31254; Member since: Feb 05, 2011

Exactly. I see it more and more.

41. oldskool50 unregistered

https://www.youtube.com/watch?v=Na5m0_HDpV8 Here is a video with Galaxy S10 Plus vs iPhone XS Max vs Galaxy S10e vs iPhone XR; battery drain test. You can see for yourself the XR as expected was the very first to die at close to 5.5 hours. The Max dies after 7 hrs, like it did in another video I watch, so hat is pretty consistent with different YTubers. https://www.youtube.com/watch?v=rx-0QPOBiJg The S10e last 7.5hrs, while the S10+ which has a over 4000Mah battery lasted even longer. It would be safe to say that if the Note and S had similar sized batteies in today's models liek the iPhone, that would only las as long as an iPhone. But thta is still great considering, the Galaxy S/Note have far and away more componenets inside the phoen to power, they have more software and hardware capabilities, that need more power, larger displays and pushing higher resolutions too. That shows that Galaxy S/Note at the very least are far and away more and better optimized than the iPhone, regardless of model or year. The S series has had better batteryilife over the iPhone since the S5. That is saying alot when you consider the S5 had terrible battery-life. It's also safe to say that if iPhone had similar battery sizes as Galaxy S/Note, they too would last longer. But when you consider how much less an iPhone does, what's eating all that battery for the exact same tasks being perform? I think it basically comes down to one three reason: 1 - either the software is very poorly optimized 2 - the SoC is a huge power hog even on limited tasks 3 - a bit of both We also know for a fact, PA battery tests are fixed. We can find proof from at least 10 sites that have proven that PA tests are fied to make the iPhone seem to last longer.

9. SaRPeR

Posts: 147; Member since: Mar 02, 2017

S10e still has better battery life than XR, XS and XS Max in real life usage. Phonearena's battery life test is a joke. I can't wait to see how 11 Pro Max going to fail against almost every other Android flagship in terms of battery life.

16. yalokiy

Posts: 1043; Member since: Aug 01, 2016

Considering that it's now +25% in size, it actually might beat the S10+ . S10+-91h Endurance Rating 11ProMax-(79h+25%)=98h

23. TheOracle1

Posts: 2329; Member since: May 04, 2015

Ok let's assume that it manages 98hrs. The Vivo NexS does 101hrs on the GSMArena test. However, that's with an SD845 and 10nm technology which is less efficient than the 7nm A13 Bionic. Pending the actual test by GSMArena I would say that the much vaunted efficiency of ios is surpassed by Vivo's Funtouch even if the 11 max pro does beat it.

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