iPhone 16 Pro Max Battery Health Still 100% on My iPhone 16 Pro Max After 239 Cycles. How?!

[stillbuffering]

Hi everyone!

I’ve never posted here before, but I wanted to share something I’ve never experienced with an iPhone to see if anyone else has.

I got my iPhone 16 Pro Max (1tb natural titanium) the morning of launch day, directly from Apple, and I’ve used it every day since. I just checked this morning — and to my disbelief, after 239 full charge cycles, it is still at 100% battery health.

I’ve never seen anything like this on an iPhone before.

I haven’t done anything extreme. I enabled the 80% charge limit on day one, and otherwise just used it like any other phone. No Low Power Mode. No battery-saving tweaks. Just real-world, daily use. I’m so impressed (and frankly, shocked)!

Here’s what my setup and usage looks like:

• I average ~10 hours of screen time per day
• I start charging when the battery hits 30% (I have a Shortcut automation that pops up a reminder to charge the phone when the battery drops to 30%)
• The 80% charging limit has been on since day one
• I use the phone while it’s charging
• I don’t leave it charging once it hits 80%
• I charge with Apple’s 20W USB-C power adapter and an Anker USB-C cable
• I’ve never used wireless charging
• I don’t use battery cases or external battery packs
• Apple Intelligence is enabled but I don’t use it
• Raise to Wake and Tap to Wake are both enabled
• I run a VPN 24/7
• iCloud Private Relay is always enabled
• Mostly on Wi‑Fi, occasionally 5G
• Background App Refresh is fully disabled
• Dark Mode is always on
• Brightness is around 50% but set to automatically adjust
• True Tone is enabled
• Auto-Lock is set to 30 seconds
• Always-On Display is enabled (but with wallpaper disabled)
• I use two location-based lock screen widgets: Weather and Sunrise/Sunset
• I also use the Weather widget on my Home Screen
• Location Services are enabled for a handful of apps
• I use “Siri/Hey Siri” voice commands every day — mostly for music control, texting, checking the weather, and other quick tasks
• I use AirPods and AirPods Max with it every day
• I stream Apple Music, Netflix, Apple TV+, and YouTube daily, often in picture-in-picture mode
• I’m always on the latest public iOS release (currently 18.4.1) — I’ve never used betas

Here’s a quick screen recording showing my 239 cycles and 100% health. I blurred my name, serial number, wifi and Bluetooth address for privacy.

For this level of use, I did not expect the battery to still be at 100%. So my question to you folks is: Has anyone else seen this kind of long-term battery performance?

Cheers!

 

[StumpyBloke]

Still 100% on mine at 134 cycles. I don’t think it’s particularly rare. But it’s certainly very good.

I should add that mine was bought roughly a month after launch date.

 

[GoofyCyborg]

 

[Shamalow]

There's no magic.

The Max capacity of a new battery is greater than the Design Capacity of your iPhone model.

Your new battery starts at 103, 104, or 105% if you're lucky.

The iOS settings only show 100% maximum.
Your battery has decreased, but you don't see it right now...

 

[BR4DOKYBrazil]

There's no magic.

The Max capacity of a new battery is greater than the Design Capacity of your iPhone model.

Your new battery starts at 103, 104, or 105% if you're lucky.

The iOS settings only show 100% maximum.
Your battery has decreased, but you don't see it right now...

Exactly what I was going to say. Some units come with a higher battery capacity. So the battery is degrading, but since it was probably at 104% or 105%, when it drops below 100%, it will show.

 

[nmeed]

Since you're basically doing 30-80%, it's not that surprising. Now, had you been going 0-100%, that would really be something. Regardless, congrats!

 

[James6s]

There's no magic.

The Max capacity of a new battery is greater than the Design Capacity of your iPhone model.

Your new battery starts at 103, 104, or 105% if you're lucky.

The iOS settings only show 100% maximum.
Your battery has decreased, but you don't see it right now...

Yep, take my 16e for example.

Maybe not 100% accurate, but according to analytics my battery was 4160mAh, roughly 104% battery health vs the design capacity of 4005mAh.

So 4% more from the factory & analytics is showing that the battery health is already falling from the 4160mAh…

But until my device goes under the rated capacity of 4005mAh the battery health reading in settings will stay at 100%.

 

[BR4DOKYBrazil]

Of course, setting the charging limit up to 80% helps preserve your battery. In addition to never letting it go below 15-20%.

 

[joeblow7777]

Battery health is really just an estimate. I can understand why Apple used to hide it.