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Yes & yes. Not really huge though

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It will charge slower on 5W, much slower. Other than that I don’t see any issues. The 5W bricks are everywhere. If t would be a catastrophe if they caused some issue.
 
Would love to know what youre doing travel wise where the difference between the 5W and the 18W size is enough to give up the fast charging.

And this is a serious question too. I want to understand
 
Yeah, no problem. 5W is just going to be a much slower charge.

If you travel with an iPad, you can also use it’s charger for the iPhone. At 12W, it‘ll be much faster than the 5W, but still not as fast as the new 18W fast charger.
 
Agree on 5W use here if you have the time. As a compromise, I believe I saw a Belkin 18w adapter on the Apple store website that looks about the same size as the Apple adapter but has folding pins, which would make a pretty big psychological difference even if in real life it's not much. I think it's available next week.
 
Yes I charged my phone with it last nite, and will continue to do so to prevent my battery from ageing when unnecessary
 
If i charge it with either charger it will have no negative effect on the phone or battery right?
 
Is it documented where the holocaust will happen, or can the user choose?

You have to agree to terms, then press 'continue.'
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But doesnt hurt the battery switching back and forth right?

(Seriously) Definitely not. If anything, it's possible that the lower charge rate might be a little more gentle on the battery and slightly prolong its life. That was true with some early lithium chemistry batteries. I'm not sure that it's still true, with better charge controllers and improved battery chemistry. At any rate, no harm at all.
 
But doesnt hurt the battery switching back and forth right?

it really doesn’t matter. Just use your phone. Charge it with whatever you want to use. Heck. I’m using my MacBook Pro usbc charger to charge mines. (87w). It probably still maxes out at 18w but I like the extended cable.
 
Yes. Just expect it to take several hours to charge your battery. Debatably better for long term battery health, but don’t get bogged down in the details. The difference is marginal. Cycle count is what matters.
 
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