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.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.
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.
Nice! I had not seen that from Apple before. Should be required ready to join this forum, save hundreds of questions.Apple agrees with you, and they couldn't have made it more simple to understand.
true, but charging a battery from a low vdc value up to 100% is more stressful for the battery than, i.e., from 40%.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.
Charge however you like, point is it won't make a bit of difference in the normal phone life cycle of first owner.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.
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.