40watt charger 17 pro help

Kevaroo916 wrote:

Will it hurt the battery since it is charging it faster vs the 20w

No it won’t hurt the battery. The iPhone 17 Pro peak charging will be (if I’m not mistaken) about 28w. Just because you use a 40w adapter doesn’t make the phone charge at 40w

Kevaroo916 wrote:

Will it hurt the battery since it is charging it faster vs the 20w

No, the charge current is controlled in the phone. You could use a 1000w charger if you could buy one.

Only by using 5w or 10w would you alter the charge rate because they cannot copeand it would be slow .

If I’m not using my MagSafe charging base I use the 140w Apple adapter that’s technically for my MacBook Pro and have done that for every USB-C iPhone I have owned since getting it…I have never had battery issues although to be fair I usually don’t keep an iPhone for myself for more than 3 years but the point is that even at that point I have yet to have an iPhone with a need to replace the battery (meaning reached 80% or below battery health…and the one iPhone I kept for 4 years was at 82% when I finally got a new iPhone for that line). If I’m not mistaken the lowest watt adapter I have used for charging iPhones in years has been a 45w charger with exception of the wireless charger in my car…no clue what watt it is because it’s OEM but typically they are pretty low watt.

The power adaptor is only a source of DC power.

The actual “charge controller” is built-in to your phone.

Your phone will not charge any faster than it’s designed charge.

A 40w charger may charge your phone faster, but depending on how you actually charge, that difference might seem negligible in “real world” use.

Either will be fine.

But the 40w will certainly be more “future proof.”

Kevaroo916 wrote:

Ok I just wanted to make sure cause faster then a 20w charger would make me think more battery wear aka less longevity of the battery. Hope I’m wrong

Three people just explained why you are wrong.