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iPhone 16 Pro Max 80% Charge Limit: One Year Later, Was It Worth It?
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Picked up an iPhone 16 Pro Max last fall. Has 294 cycles and is at 100% battery health.
I have zero care in the world about charge limits and optimizations when charging. I suspect it's a placebo effect for some people. I charge to max and charge when I want, even topping off an 80% battery if needed before heading out.
Hot take: I'd actually argue that charge limit and optimize charging cause damage to your phone. In theory you have less of a charge when you're out and about and thus more likely to run the battery low where the real damage occurs.
I have zero care in the world about charge limits and optimizations when charging. I suspect it's a placebo effect for some people. I charge to max and charge when I want, even topping off an 80% battery if needed before heading out.
Hot take: I'd actually argue that charge limit and optimize charging cause damage to your phone. In theory you have less of a charge when you're out and about and thus more likely to run the battery low where the real damage occurs.
This. Though out of curiosity, do you ever do anything that gets it pretty hot? Or have much heat exposure in general? Yours definitely appears to be holding up better than average.
So, 20-80%.... you've been using 60% of your battery capacity? so you can keep 94%? Does this make any sense?
This makes my 16 Pro Max even more impressive. I kept it near 100% at almost all times, charged overnight, and almost exclusively used MagSafe to charge..... still 100% capacity after a year.
In case anyone's going to tabulate all the comments. IPhone 16 Pro, first used Sept 2024 and kept at 90%. Battery health normal, max capacity 98%, cycle count 286. Wireless charge overnight always and usually while driving. During the day I plug it in occasionally to top it off.
I work from home so I don't stress much one way or the other and have a MagSafe battery pack that lives in my backpack for whenever I miscalculate my need.
I work from home so I don't stress much one way or the other and have a MagSafe battery pack that lives in my backpack for whenever I miscalculate my need.
Never thought of it that way. You made a very compelling argument, sir.
Are you conflating capacity with charge? A "day 1" battery has a 100% capacity, but may only be charged to 80%.
I don't know of anyone whose battery is at 100% 24 hours a day-- we use the phone. It may be at 60% later in the day, but that is CHARGE, not CAPACITY.
Yes, but you're artificially making it an 80% capacity day one by using it that way. It's pointless.
That’s a lot of cycles. Have you checked against something like Coconut battery?
Is my 15 Pro broken? 
Twelve months after purchase the cycle count is 169, battery capacity 100%. I limit the charge to 95%. I got AppleCare+ partly because I expected to need a battery replacement. Doesn’t look like that will be necessary anytime soon.
My iPad, on the other hand, is six months old and the battery is already down to 97%.
Twelve months after purchase the cycle count is 169, battery capacity 100%. I limit the charge to 95%. I got AppleCare+ partly because I expected to need a battery replacement. Doesn’t look like that will be necessary anytime soon.My iPad, on the other hand, is six months old and the battery is already down to 97%.
Only if you obsess over resale value, you want to hand down the phone, or you can’t afford a phone more than once in 3-4 years.
16 Pro, 225 cycles, 100% battery health. Set it to 85% with just the occasional bumping up to 100% when I was traveling but 99.9% of the time it was at 85%. I leave it on a Magsafe charger while I'm working so it stays at 85% most of the day before I take it off after work, back on the charger overnight, so it's really only not on the charger maybe 5 hours a day.
