iPhone 12 Pro How much slower will iPhone 12 Pro Max charge on current chargers?

[BigMcGuire]

The standard apple one is 5w i believe. They don’t do a 10w, next is 12w then 20w. Probably safest to go with 5 or 12?

The old iPad chargers used to be 10w but that changed to 12w ... oh I can't remember, maybe 3 years ago? I can't remember. lol.

Observing differences between my phone and my wife's phone (we always get the same phone at the same time) - over the course of a 2 year lifespan - with coconutBattery (checking weekly) - was almost 0.

She'd use the max available charger and I'd always try to find the slowest charger for my phone. I'd baby my phone and my wife would let hers drain to 0 and use it like a normal person. At the end of 1.5-2 years, the difference between our two phones (despite her having hundreds of more charge cycles than me) was almost 0. I might have a few % better capacity on average.

Granted, if one can follow the 40-80 rule... I mean... it can't hurt. If you wanna use a slow charger, it can't hurt. But the benefits for the inconvenience don't seem to reward the behavior all that much unless one keep's their phone 3-5 years.

 

[satinsilverem2]

I have fast charged my X every day since launch and its got almost 800 cycles on it and still over 90 percent health. heat is an enemy but I dont think its that bad on the phone. it will use the PD 9V spec until it gets to ~80 percent and then go to 5V to finish it off.

 

[Mac2019]

Hey Mac2019 - thanks for replying to my post. Hopefully I can help answer your questions:

The 5w old iPhone power brick got way too hot for me. The phone was nice and cool when I was using my 11 Pro Max and 12 Pro Max with my 5w old iPhone charging brick. It wasn't warm, it was uncomfortably hot for me (the charging brick near the wall plug).

Agreed, a 5w brick will be better for the battery than a 12w brick but I'd argue the difference isn't a ton. A 18w or 20w brick? Yeah, a bit more (the higher you go the more damage) but still would argue that over the course of 2 years most users won't tell much of a difference. I haven't done scientific tests but in the 2 years I usually own my phones I haven't noticed a difference between me doing a 5w charger and my wife using a 18w+ charger (we always get the same phones). Over the course of 5+ years I'm sure the effect is more pronounced.

Oh, my last comment was just that in the last 5 years most chargers for phones today are a lot higher wattage/voltage than they were pre-5+ years ago. Most phone manufacturers have really upped the juice going into these phones and included power bricks that are a lot larger than yesteryear's chargers. Indeed, a 5w charger is a 5w charger 5 years ago or today. I meant to say that today, phones usually come with a lot larger (wattage/voltage) chargers than they used to - I find these chargers don't get anywhere near as hot as the 5w charger does with my 12 Pro Max despite charging a lot faster.

Great thanks, really informative.
Any thoughts on the new iPad shipping with a 20w brick? Too much or bigger battery able to cope?

 

[BigMcGuire]

Great thanks, really informative.
Any thoughts on the new iPad shipping with a 20w brick? Too much or bigger battery able to cope?

I'm definitely more of the "bigger battery will be able to cope" opinion. The phone will only ask for what it thinks is safe. You'll notice that the phone reduces the charge as it passes 80% - trickling to mere watts after 90%. Now, granted, 5w vs 20w - unless you're keeping your phone 3-5+ years, I wouldn't worry about it.