Post by ScottI am looking at buying a new iPad Mini when it is released on
"Please be aware: This iPad includes a USB-C charging cable, but does
not include a USB-C power adapter. Therefore, if you do not already
own one, you will need to purchase the Apple 20W USB-C Power Adapter
in order to charge this iPad."
Is this correct or sales talk? I thought the point of USB-C was to
standardise and avoid multiplicity or power adapers. Will any USB-C
charger do and does it need to be 20 Watts?
If you have a common cable and multiple devices that need charging the
idea was that you don't need multiple chargers that may just sit in a
drawer and later go to landfill unused. You can use your existing charger.
Not supplying a charger with devices that charge via the USB C is
becoming common with the purchase of a phone.
USB C for charging isn't just 5V. The device and charger can negotiate
a higher voltage or higher volts/amps combination for faster charging,
and possibly a lower voltage/amps once the bulk of the charging is
complete. I would also expect an iphone to be monitoring battery
temperature and adjust charging accordingly.
For instance a USB C 65W devices will support the following charging
volts/amps 20V-3.25A / 20V-2.25A / 15V-3A / 12V-3A / 9V-3A / 5V-3A
Iphone recommendation
For fast charging, iPhone 12, iPhone SE (3rd generation), and later
models require a power adapter with a minimum power output of 20 watts,
such as the Apple 20W USB power adapter. If you use a third-party power
adapter, it should meet these recommended specifications:
Frequency: 50 to 60 Hz, single phase
Line Voltage: 100 to 240 VAC
Output Voltage/Current: 9 VDC/2.2 A
Minimum Power Output: 20 W
Output Port: USB-C
The latest USB C sockets inbuilt to mains socket plates usually/often
will support faster charging rates
As for will any charger do? You pays your money and takes your choice. I
have a spare cheapish USB C third party charger that I keep in my laptop
bag for use when I'm away from home. It works perfectly BUT this is the
second no-name one I purchased. The first seemed very unreliable with
charging as at times it often resorted to the lowest rate of charging
and was unable to increase the charge in the laptop battery when the
laptop was in use and the battery charge had become low. The replacement
charges the battery to 10% to 80%* in under 30 minutes even when the
laptop is still in use. My phone fast charges quickly from a USB C
charger inbuilt to a mains socket.
* Many manufacturers are now recommending only going to a 80% for
battery longevity. My devices that have USB C charging all have inbuilt
(software) facilities for user selection of stopping the charge when the
battery gets to this 80% level.
--
mailto : news {at} admac {dot} myzen {dot} co {dot} uk