OK, I kind of thought so. > On Nov 7, 2021, at 5:06 PM, Dave Carlson <dgcarlson0...@gmail.com> wrote: > > Joseph, > > Thanks for putting in this effort. I realized after your first message that > of course, the output voltage for a MacBook charger would be much higher than > for an iPhone. The web page you sent confirms that it is nominally 20 Volts > dc. This is required to charge the MacBook, regardless of what power in Watts > may be listed. The higher wattage for any given voltage means more current > available for charging. > iPhones can be connected directly to a USB port or to their own brick. > Whether that brick is a 12 Watt brick, or the smaller more familiar 5 Watt > brick, their output voltage matches that for USB, which is nominally 5 Volts > dc. Having a 12 Watt charger for an iPhone instead of a 5 Watt charger just > means that the 12 Watt charger can deliver more current to the iPhone, if it > is capable of handling it. > > So my original question was pretty naive especially coming from an electrical > engineer. Just hadn’t had enough caffeine before posting that. > > Dave Carlson > Oregonian, Engineer, Musician, Farfar, Woodworker, and Pioneer > > On Nov 7, 2021, at 2:44 PM, Joseph Hudson <jhud7...@gmail.com> wrote: > > Actually Dave, I just did some googling and it's actually lower than what we > thought. Here's the result that I just looked at below. So you could actually > search for one of these. Mind you I don't have a new Mac yet. And it's still > not something I'm not sure if I'm gonna do yet. > > https://www.ifixit.com/Answers/View/288059/What+is+the+voltage+from+the+charger+suppose+to+be > >> On Nov 7, 2021, at 2:12 PM, Dave Carlson <dgcarlson0...@gmail.com> wrote: >> >> Joseph, oh, heck. I completely forgot to think about voltage. Pretty likely >> the MacBook requires something in the range of 12 to 16 Vdc, and the phone >> chargers are only around 5 Vdc. Thanks for the sanity realignment. >> >> Dave Carlson >> Oregonian, Engineer, Musician, Farfar, Woodworker, and Pioneer >> >> On Nov 7, 2021, at 10:58 AM, Joseph Hudson <jhud7...@gmail.com> wrote: >> >> Dave, I will check the voltage on the battery before using that particular >> block. That might make the Mac complain. >> >>> On Nov 7, 2021, at 12:10 PM, Dave Carlson <dgcarlson0...@gmail.com> wrote: >>> >>> Anyone know if I would be able to charge a MacBook Pro using the 12 Watt >>> charger that comes with the newer iPhones? I would of course buy a USB C / >>> USB C cable for this purpose. And I know that it would charge more slowly, >>> but don’e know if the MacBook would complain. >>> >>> Dave Carlson >>> Oregonian, Farfar, Engineer, Musician, Pioneer, and Woodworker >>> >>> -- >>> The following information is important for all members of the Mac >>> Visionaries list. >>> >>> If you have any questions or concerns about the running of this list, or if >>> you feel that a member's post is inappropriate, please contact the owners >>> or moderators directly rather than posting on the list itself. >>> >>> Your Mac Visionaries list moderator is Mark Taylor. 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