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Ariaizadi

macrumors regular
Original poster
Apr 11, 2015
152
64
I’ve been using the charging brick that came with my 2020 iPad Pro (18w). Will the 20W power adapter offer me anything new since iPhone 12 pro and MagSafe charger can use a maximum of 15 watts?
 

Pug72

macrumors 65816
Mar 18, 2012
1,301
846
England
The box states too use the 20W charge block, has it been established yet why this is the case?
 

Petey07

macrumors regular
May 30, 2008
220
50
San Francisco Bay Area
I'm just curious if getting at 30W (or higher W) Anker/RavPower powerblock would be safe to use with the magsafe charger... or is it best to stick with 20W Apple power block instead...? Concern that if a third-party block can and might fry the phone vs. Apple power block...
 

Ralfi

macrumors 601
Dec 22, 2016
4,024
2,674
Australia
Apple's MagSafe charger has a charging cap at 15W as stated in the original post.
Yeah, but it hasn’t been confirmed if the efficiency drop-off from 18w will get you that 15w at the MagSafe charger end.

Wondering if there’s a reason why Apple’s recommending the 20w brick - is it just because the 18w no longer exists or is it a minimum requirement for the 15w MagSafe charger?
 

ireadblitz

macrumors member
Nov 15, 2016
63
69
I'm just curious if getting at 30W (or higher W) Anker/RavPower powerblock would be safe to use with the magsafe charger... or is it best to stick with 20W Apple power block instead...? Concern that if a third-party block can and might fry the phone vs. Apple power block...
The 15W magsafe will cap at 15W so yes its safe to use.



Yeah, but it hasn’t been confirmed if the efficiency drop-off from 18w will get you that 15w at the MagSafe charger end.

Wondering if there’s a reason why Apple’s recommending the 20w brick - is it just because the 18w no longer exists or is it a minimum requirement for the 15w MagSafe charger?
If the 18W power brick no longer exists on apple.com I think its pretty obvious as to why they recommend using the 20W that they sell now.

Y'all really over complicating things lmao
 

eclipse01

macrumors 68030
May 16, 2011
2,697
351
Eau Claire, WI
The 15W magsafe will cap at 15W so yes its safe to use.




If the 18W power brick no longer exists on apple.com I think its pretty obvious as to why they recommend using the 20W that they sell now.

Y'all really over complicating things lmao

Cause if Apple doesn’t make it, it doesn’t exist :-/
 

Petey07

macrumors regular
May 30, 2008
220
50
San Francisco Bay Area
The 15W magsafe will cap at 15W so yes its safe to use.

Y'all really over complicating things lmao
So that's good to know... going find anker/ravpower blocks to use with the magsafe charger Lol. Also, i wonder too if was to plug directly from a block (20W and higher) to the phone... will the phone only take the maximum W that it can handle?

🤣🤣🤣 when I had the first iPhone (1gen), and used an third-party iPod charger (the classic brick one Lol), and it fried the iPhone... was so pissed... so I'm just taking precautionary steps since after that incident Lol!
 

dubels

macrumors 6502
Aug 9, 2006
495
6
I'm just curious if getting at 30W (or higher W) Anker/RavPower powerblock would be safe to use with the magsafe charger... or is it best to stick with 20W Apple power block instead...? Concern that if a third-party block can and might fry the phone vs. Apple power block...
All correctly manufactured USB C PD format chargers will only allow the charger to draw what it is rated for. I have a RavPower gan 60w USB C charger that I will be using to charge my work dell, iphone 12 pro and apple watch. My magsafe is already plugged in and I tried it with my brother’s 11 pro and it charges over Qi without issue.
 
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Ta0jin

macrumors 65816
Nov 9, 2011
1,035
375
Maryland
Of course they recommend you use the 20W brick, if they still sold the 18W brick they’d tell you to use that one too. If you have an 18W brick it’s perfectly fine to use with MagSafe. As far as charging speeds 18W vs 20W, well I don’t know the breakdown there.
 

Steve121178

macrumors 603
Apr 13, 2010
5,844
5,626
Bedfordshire, UK
Yeah, but it hasn’t been confirmed if the efficiency drop-off from 18w will get you that 15w at the MagSafe charger end.

You need the 20w to get the full 15w. I was watching a video last night on YouTube explaining that the 18w won't provide the full 15w required.
 

DotCom2

macrumors 603
Feb 22, 2009
5,428
4,250
The box states too use the 20W charge block, has it been established yet why this is the case?
Because they no longer sell the 18 watt. The 18 watt will work fine as was stated in another thread of a poster who called Apple and asked this very question.
 

Zanton68

macrumors 6502
Sep 24, 2012
266
169
UK
Can the 20w Plug, with USB C / Lightning cable, be used with all devices e.g. AirPods Pro, old iPhones etc.

I accept that fast charge will only work with iPhone 12 etc but can the older devices be charged without damaging them or their batteries ?
 

eclipse01

macrumors 68030
May 16, 2011
2,697
351
Eau Claire, WI
Anyone that is saying that you need the 20watt charger to get the full 15W...this is not true.

I use a 18W brick and have seem 15W personally.
 
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