I let mine charge fully overnight and by the end of the day I am at 30-40%. That seems to work for me pretty well on an iPhone 11 (a little over 3 years old). The biggest thing is not discharging it too much IMO.
iOS 16.1 new “feature” extends the insanity…
- Thread starter SubieRubyRoo
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Some quick engineering thoughts...
Isn't carbon emissions lowest for most grids during the daylight hours...when the sun is shining for solar, or the wind is blowing stronger? Isn't the cost of electricity higher during these "peak" hours? So they are reducing your carbon footprint by actually increasing the cost to charge?
I could be totally wrong here...
@OVERKILL - thoughts?
Isn't carbon emissions lowest for most grids during the daylight hours...when the sun is shining for solar, or the wind is blowing stronger? Isn't the cost of electricity higher during these "peak" hours? So they are reducing your carbon footprint by actually increasing the cost to charge?
I could be totally wrong here...
@OVERKILL - thoughts?
Another virtue signal, at least it’s software and can be opted out of, unlike their move to not include chargers with their phones. Sure it’s for the “environment” sure everyone has a charging brick, but wait, these charging bricks have a USB type A connector, and the charging cable they ship with the phone is USB type C.
Meanwhile they are saving a ton of money on that charger and the phone package is almost half the thickness, so they can ship more phones in one container. But hey, you still get that cool apple sticker that goes directly into trash
. Yes it’s all for the environment 
Meanwhile they are saving a ton of money on that charger and the phone package is almost half the thickness, so they can ship more phones in one container. But hey, you still get that cool apple sticker that goes directly into trash
. Yes it’s all for the environment 
According to that site: https://batteryuniversity.com/article/bu-808-how-to-prolong-lithium-based-batteries
Most Li-ions charge to 4.20V/cell, and every reduction in peak charge voltage of 0.10V/cell is said to double the cycle life.
In terms of longevity, the optimal charge voltage is 3.92V/cell. Battery experts believe that this threshold eliminates all voltage-related stresses; going lower may not gain further benefits
Note that 3.92 / 4.2 = 93%. This is consistent with what I've seen with laptop battery management defaults. It suggests that with phones, limit max charge to 93% and the battery should last more than twice as long (twice as many charge/discharge cycles before it gets tired). Limiting further to 50% doesn't provide much if any benefit.
I like the fact that many phones don't chip chargers anymore. Most chargers are standard generic devices. You can buy your own, much higher quality, that will last forever for all the devices you own. The last thing I need is yet another charger clogging up my drawer, or to throw into the trash.... Meanwhile they are saving a ton of money on that charger and the phone package is almost half the thickness, so they can ship more phones in one container. But hey, you still get that cool apple sticker that goes directly into trash
My iPhone 12 is still at 100% and I make no special effort when it comes to when I charge it, how long I charge it, how often I charge it, etc. I do have optimized charging turned on though. It wouldn't surprise me at all if Apple "manipulates" the battery health value shown. They did it before and got caught....
My guess is that when you enable "optimized charging" it charges slower to keep temps down and stops before reaching 100%. And changes the battery % scale to be relative instead of absolute so it reads 100% at whatever the limit is (90% or whatever). Otherwise people would get confused and call support.
My 12 Pro max was at 85% battery health and I could definitely tell the battery didn’t last as long. On the other hand, I hardly ever keep a devise more than 3 years, no reason to worry about battery life too much.
My one iPhone has a bad battery that insta crashes if I don’t immediately flip to the low power mode even with a full battery.
If they wanted to save resources perhaps allow us to PERMANENTLY SET BATTERY SAVER.
Also when I shut off WI-FI, I want it COMPLETELY OFF NOMATTER WHERE I SHuT IT OFF.
Ditto Bluetooth
Instead of it switching on and off randomly
That's not how this works. Voltage rise during charging cycle is not linear vs. stored energy.
If you look at Table 4 in that link you posted, you'll see that at 3.9V, you're at about 60-65% stored energy. At 4.0V, you're at about 70-75%.
4WD
$50 site donor 2025
Well, uh, the bigger time display is nice 
Interesting. When I reduce max capacity on my phone in Accubattery, it says dropping to 95% reduces cycle cost from 1.0 to 0.62.
Put differently, a 5% reduction in capacity is a 38% reduction in wear and tear on the battery.
Ive never run down a battery in a cell phone and always was healthy even when I gave them away. Always did a full charge overnight, though now that I see my wife stop at 80% Ill take my phone off before bed, but never less than 80%
I don keep phones for more than 3 years if that.
Ill never give into the "green energy movement" and always will opt out. There is no reason for it, none, its a flawed ideology/agenda.
Green energy can be green 24 hours a day with the most greenest of all = Nuclear
I don keep phones for more than 3 years if that.
Ill never give into the "green energy movement" and always will opt out. There is no reason for it, none, its a flawed ideology/agenda.
Green energy can be green 24 hours a day with the most greenest of all = Nuclear
Optimized Charging in Apple phones is at 80% the charge rate will drastically slow to a point that for the rest of the night it will slow charge until the time you get up in the morning. It learns when you take the charger off in the morning. So instead of instantly charging to 100% in the first hour or two, it will slow up to an all night charge because it knows, for example you do not unplug your phone until 5:30 AM.
This is to the best of my knowledge but believe it is correct from what I read and my personal experience. When my work schedules changed after retiring, my phone charging changed with it.
That may be, but that's unrelated to the whole voltage vs charge level topic. Next time you charge your phone to 93%, right after you unplug the charger, take a look at the voltage as reported by Accubattery. It's going to be a lot higher than 3.92V.
Perhaps, but it is related to the question "How much battery capacity should I sacrifice to extend the lifespan of my battery?"That may be, but that's unrelated to the whole voltage vs charge level topic. Next time you charge your phone to 93%, right after you unplug the charger, take a look at the voltage as reported by Accubattery. It's going to be a lot higher than 3.92V.
You don't understand because you're a sheeple.Of all the things to get outraged about
There are a lot of places electricity is cheaper during off-peak hours
Very true and I love that I can limit my dell laptop down to 55% max charge and after 2 years there's virtually zero degradation. I hate how not only phones but also all of my true wireless headphones even with their fancy apps don't give me any option to charge limit the earphones or the case. My airpods 1, galaxy buds pro, and akg 400 are losing capacity. I can't stop any of them from racing to be pegged to 100% and stay there forever and it's annoying.
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I assume you have the charge limiter set to where it charges to 80% until it needs to finish charging before you wake up. The problem is having a high soc and remaining there for a long period of time.
I just noticed today that yes this feature appears to be on. But yeah I never really paid attention I just plug the phone in and it's at 100% when I unplug it in the morning.
