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Citizen45

macrumors member
Original poster
Apr 9, 2022
50
48
Macs have a feature where you can bypass the battery power and use the power adapter as the main source of power when plugged in.

This significantly improves battery life because the battery isn't constantly being discharged and re-charged, but rather the power is being provided directly from the electrical outlet.

The iPhone (and iPad, for that matter) do not have this feature.

Does anyone have any idea if the iPhone could support this feature in the future?

It would do wonders for battery life, especially for people who use their phone a lot while at a desk or in bed.
 
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I7guy

macrumors Nehalem
Nov 30, 2013
35,165
25,297
Gotta be in it to win it
I always wondered why Apple didn't do this to begin with. If the battery is at 100% bypass it and don't charge it. Seems like a win all around. (But also wondering, maybe they do this now. At 100% trickle charge)
 
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Citizen45

macrumors member
Original poster
Apr 9, 2022
50
48
I always wondered why Apple didn't do this to begin with. If the battery is at 100% bypass it and don't charge it. Seems like a win all around. (But also wondering, maybe they do this now. At 100% trickle charge)

They don't do this right now.

Right now, if your phone is at 100% battery, it will stop charging it, use the battery to run the phone, and then when it drops to ~95%, start charging it up again. (It will display 100% the entire time though).

This is actually bad for the battery.

Bypassing the battery completely would enhance the battery health significantly.
 

Juicy Box

macrumors 604
Sep 23, 2014
7,580
8,920
Degrading battery performance is something that people could consider when deciding to replace their otherwise perfect iPhone for a new model.

There is little incentive for Apple to do what you are asking, as it would only hurt their bottom line, imo.
 
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saber32au

macrumors 6502
Apr 5, 2019
282
207
This significantly improves battery life because the battery isn't constantly being discharged and re-charged, but rather the power is being provided directly from the electrical outlet.

It's a very good feature. I use it on my work and my own laptops; in the long run it does reduce the charge cycles on the laptop battery, extending the battery's usable life.

It'd be nice if Apple could do the same on their phones, and tablets...or better yet let the user set a battery charge limit (ie anywhere from 50-100%). If the phone/ipad is connected to a charger, the device chargers to the user set limit (ie 80%), then the device draws power from the charger until the charger is disconnected...

But you know...Apple knows best...supposedly.
 

JPack

macrumors G5
Mar 27, 2017
13,568
26,263
iPhone already supports charge management since iOS 12.

How many people have a mobile phone plugged in constantly to the outlet? Probably very, very few. It makes sense for an expensive device like a notebook, but much less so for iPhone and iPad.
 
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reppans

macrumors 6502
Dec 2, 2006
323
190
Although you can’t power an iPhone straight pass though (except arguably at 100%, which is terrible for batts), fortunately, Apple and 3rd parties do provide the tools to manage/automate much less stressful cycling. Shortcut automations, smartplugs, or a Chargie USB dongle can all be programmed to short-cycle within low SoC charge while plugged in. This can effectively increase the ‘500 cycle’ life estimate (which is Li-ion standard when charged to 100%) to thousands, perhaps tens of thousands of cycles, as NASA is said to do.
 
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