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99% of the time I charge my phone every night, just pop it on my dock on the bedside cabinet. I recently tested the battery and didn't charge it for 89 hours, got 8 hours screen on time lol.
 
Consider the fact that the official Smart Battery Case cannot be turned off, and trickle charges the phone in the high 90's until the case runs dry, and you'll see Apple have already answered your question regarding what is actually best practice with your phone battery.
 
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There must be something to the 80% SOC idea, as Tesla defaults to that (actually recommends you don't charge over 80%). They use similar battery types (clearly different voltages though). Toyota uses 80% for the Prius, but that is NiMH which isn't the same.
There is something to it. If you don't let battery fall below 40% nor charge above 80% you can increase battery life to like 8 or 10 years. When you have a power pack in a car that costs $10,000 to 30,000 to replace that kind of longevity is a strong selling point.

Now in a phone, most users will replace the whole phone long before 8 to 10 years. More like 1 to 3 years. So if you want to keep the battery going for the second or third owner, go ahead and nurse the battery along. Never charging above 80% or falling below 40%. But then don't complain that battery life is too short between charges. Or that you need power adapter and cord everywhere you go.

It's entirely up to the user, how impractical they want their phone to be. Not a right or wrong issue. Choices, nothing but choices. I choose to charge phone whenever it's convenient to me. Sometimes 15 minute bump before I go out or many times overnight. In one year, most likely I will get a new phone, maybe two years. But however I decide to charge it, my battery will last that long for sure. And if by some unlucky chance I got a bad battery, Apple will replace it or the whole phone so it concerns me not at all.
 
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Running an lithium battery flat is very bad for it HOWEVER it should be kept in mind that 0% =/= 0vdc.

If fully charged is 4vdc the phone will shut off from low battery at 3.1vdc (example). It's not bad for an iPhone to be discharged to 0% because that's still well above the threshold of what is harmful to a lithium battery.

The effort of trying to charge a battery in a particular manner isn't worth the headache and hassle IMO. If it gives you peace of mind then have at it.
 
People worry too much about this stuff. If the battery poops out and your still under warranty, you get a new one. If your not under warranty buy one for $79 Bucks simple.
 
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Mean while Apple engineers made it brain dead simple. Use the phone, charge it up, any time, any way you please. You can't do it wrong, because the charging circuit has the smarts hard wired into it. Use any Apple approved power adapter with Apple cable and nothing the user does can defeat the engineering. Plug the power adapter into any voltage world wide, 120VAC 60Hz or 220VAC 50Hz. Out comes 5VDC with the phone automatically adjusting the current it draws.

Apple agrees with you, and they couldn't have made it more simple to understand.
 
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Running an lithium battery flat is very bad for it HOWEVER it should be kept in mind that 0% =/= 0vdc.

If fully charged is 4vdc the phone will shut off from low battery at 3.1vdc (example). It's not bad for an iPhone to be discharged to 0% because that's still well above the threshold of what is harmful to a lithium battery.

The effort of trying to charge a battery in a particular manner isn't worth the headache and hassle IMO. If it gives you peace of mind then have at it.
true, but charging a battery from a low vdc value up to 100% is more stressful for the battery than, i.e., from 40%.
When conditions permit I would prefer to plug it in.
 
true, but charging a battery from a low vdc value up to 100% is more stressful for the battery than, i.e., from 40%.
When conditions permit I would prefer to plug it in.
Charge however you like, point is it won't make a bit of difference in the normal phone life cycle of first owner.
 
I entered this thread all paranoid then I remembered that I've literally never had a problem with the iPhone's battery. I might start charging it every day now instead of every other day but I'm not worried. So thanks for that haha.
 
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I entered this thread all paranoid then I remembered that I've literally never had a problem with the iPhone's battery. I might start charging it every day now instead of every other day but I'm not worried. So thanks for that haha.

I came back to this thread for that very reason (having just got a new iPhone myself). :)
 
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