iPhone 17 Pro Max Overnight charging 5W or 20W?

[tilhas]

At night I sleep 6-7hrs. So even if my new IPhone 17 Pro Max was at 1% charging using a 5Watt would bring it up to my 80% max charge limit.

I want to know if there is any advantages of using the original apple 5W or it worse?
My other option is the Apple 20Watt.

Thoughts?

 

[Andeddu]

The advantage is with the 5w as, with slower charging, less heat is produced resulting in slower battery degradation.

 

[maka344]

I always use 5w for overnight charging. It’s far better for your battery. My 16PM before my upgrade, was 100% battery capacity with 290 cycles.

 

[Basic75]

I always use 5w for overnight charging. It’s far better for your battery. My 16PM before my upgrade, was 100% battery capacity with 290 cycles.

Did it show 100% with 290 cycles even after a round of calibrating?

 

[Jackbequickly]

Been using Apple 5 watt cube for years. If you are in no hurry. . .

 

[Artemiz]

Unlike the old phones the 17s have a vapor chamber and made out of aluminum. With these changes the extra heat generated by the 20W or higher is no longer an issue. Also, it doesn’t charge at the full peak current till it’s full so whatever heat is generated only last for a few mins which is in turn dissipated quickly on the new models.

So my suggestion is to feel free to use 20W charger. Only thing to look out for is those think Otterbox cases that don’t let the phone breathe. Besides that, knock yourself out.

 

[geta]

Just use the charger that come with your phone…

 

[maerz001]

Unlike the old phones the 17s have a vapor chamber and made out of aluminum. With these changes the extra heat generated by the 20W or higher is no longer an issue. Also, it doesn’t charge at the full peak current till it’s full so whatever heat is generated only last for a few mins which is in turn dissipated quickly on the new models.

So my suggestion is to feel free to use 20W charger. Only thing to look out for is those think Otterbox cases that don’t let the phone breathe. Besides that, knock yourself out.

There is some wild speculation in here. The vapor chamber is connected to the processor not the battery.
And the max current charge is dropped only after reaching about 70% which takes ~ 30mins

 

[maka344]

Did it show 100% with 290 cycles even after a round of calibrating?

Yes.

 

[darkelipse04]

There is some wild speculation in here. The vapor chamber is connected to the processor not the battery.
And the max current charge is dropped only after reaching about 70% which takes ~ 30mins

Not as wild as you think. The vapor chamber runs along part of the battery. Perhaps it helps with heat dissipation there as well.

 

[FunkyTang]

TheYay recommends 5W charging using a USB-A to USB-C cable from Beats.

 

[one more]

5W here.

 

[Artemiz]

There is some wild speculation in here. The vapor chamber is connected to the processor not the battery.
And the max current charge is dropped only after reaching about 70% which takes ~ 30mins

While I appreciate your enthusiasm in jumping to dismiss someone’s response as “wild speculation”, you’re ignoring a lot here.
The primary purpose of a vapor chamber is to pull the heat away from the hottest end (processor during active use). The same thing helps distribute the heat evenly while charging as well. It’s not designed to just keep the processor run cooler and let everything else be damned. This in conjunction with the aluminum construction dissipates heat faster.

Secondly, 30 mins is still just a few. I didn’t say it was only for a couple mins. OP wants to plug it in overnight and last I checked 30 mins is much smaller than that.

If you have any questions, I’m happy to answer.

 

[infinilo]

only magsafe charging ever since the iPhone 14, usually around 200 cycles when I trade in, always at 100% battery. 5W is doing little favors besides wasting time.

 

[ARK]

5W - iPhone 12 Pro Max with 86% on the original battery still.

 

[klasma]

While I appreciate your enthusiasm in jumping to dismiss someone’s response as “wild speculation”, you’re ignoring a lot here.
The primary purpose of a vapor chamber is to pull the heat away from the hottest end (processor during active use). The same thing helps distribute the heat evenly while charging as well. It’s not designed to just keep the processor run cooler and let everything else be damned. This in conjunction with the aluminum construction dissipates heat faster.

Secondly, 30 mins is still just a few. I didn’t say it was only for a couple mins. OP wants to plug it in overnight and last I checked 30 mins is much smaller than that.

If you have any questions, I’m happy to answer.

It’s still wild speculation that 20W is now fine and previously was not. How do you determine how many Watts are fine?

 

[michaelscarn]

OMG, my battery is degrading!!! 🙀 I won't be able to function today or sleep tonight because of the horrible anxiety this causes! Anything below 95% is totally unacceptable. I've spent hours researching this topic, bought the proper chargers, only charge to 80%, and set a timer so I don't accidentally over charge. Even if I fall asleep, the timer wakes me up so I can unplug. This is SERIOUS you guys. I don't understand how you aren't as stricken with worry about a degrading phone battery. And DON'T tell me it's free with AppleCare or $99 otherwise. NO! Absolutely not! I want the ORIGINAL battery, because once the phone is opened, it's RUINED! OMG you guys my phone battery, chargers, cables, I'm SO overwhelmed. I'm LITERALLY SHAKING right now!

/s

 

[cateye]

It’s still wild speculation that 20W is now fine and previously was not. How do you determine how many Watts are fine?

All (as in, 100%) of the battery conversations on MacRumors are speculation supported by made-up facts to enable busy-work and micromanagement of devices and systems that don't need our help. Need to charge? Charge it. Need to use it? Use it. Heat is normal. Do not subject phone to excessive, extremely high temperatures (think like in a locked car in the middle of summer) for extended periods of time. The end.

 

[klasma]

All (as in, 100%) of the battery conversations on MacRumors are speculation supported by made-up facts to enable busy-work and micromanagement of devices and systems that don't need our help. Need to charge? Charge it. Need to use it? Use it. Heat is normal. Do not subject phone to excessive, extremely high temperatures (think like in a locked car in the middle of summer) for extended periods of time. The end.

Also, avoid draining them to red.

 

[TechRunner]

I charge overnight every few days using the MagSafe on my desk. I've had my 16PM almost 11 months, and only have 72 charge cycles (not a heavy user, obviously) and it's still at 100%.

 

[casperes1996]

I feel like the software managing the charging should be able to recognise sleep charging and, if it is beneficial to the device, lower voltages during long-term sleep charging. It already communicates with the charger in all sorts of ways; I sometimes charge my iPad with a 140W charger and it sure doesn't pull that

 

[ignitedvelocity]

Anecdotally, I ONLY used fast charging with my old iPhone. Like the Apple 20W, 140W, or an Anker GaN 65W (very nice brick).

I also kicked the snot out of that battery: oftentimes running it til shutdown, other times leaving it plugged in for hours at full, and every other situation in between.

Launch day 12PM original battery is hanging on at 78%.

 

[maerz001]

Not as wild as you think. The vapor chamber runs along part of the battery. Perhaps it helps with heat dissipation there as well.

Perhaps, maybe, could be possible. Wild speculation. Just cos there is a cooling system designed for the processor reaches above the battery where it’s supposed to dissipate heat doesn’t mean that the battery gets cooled better. I would say exactly the opposite. But prove me wrong

 

[uacd]

The slower the charger - the better. Companies will never tell you this because it leads to them losing profits. 5W is much better for battery in long run. I mostly use old 5W, 10 or 12W Apple bricks to charge my iPhone, rarely I also use 15W Samsung charger.

It seems like phone charges much faster at 5W when it is turned off, not sure what is the reason. Heat during charging is also significantly reduced

 

[maerz001]

While I appreciate your enthusiasm in jumping to dismiss someone’s response as “wild speculation”, you’re ignoring a lot here.
The primary purpose of a vapor chamber is to pull the heat away from the hottest end (processor during active use). The same thing helps distribute the heat evenly while charging as well. It’s not designed to just keep the processor run cooler and let everything else be damned. This in conjunction with the aluminum construction dissipates heat faster.

Secondly, 30 mins is still just a few. I didn’t say it was only for a couple mins. OP wants to plug it in overnight and last I checked 30 mins is much smaller than that.

If you have any questions, I’m happy

The principal of a vapor chamber is that you need enough heat to generate the vapor from the liquid. If the battery gets to this level it’s toast

2nd:
“A few minutes” → about 3–5 minutes, sometimes up to 10 depending on tone.

If you want:
• 2 or less, say “a couple.”
• 5 or more, say “several.”