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Apr 12, 2001
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Much has been made of the increase in battery capacity in the new iPad over the past week and a half, including its impact on charging and heat issues experienced by consumers. More recent discussions have focused on the device charging beyond the 100% indicator.

A few other tidbits related to the device's battery are gaining some exposure, information which may help users plan how they use their iPads. First, a report from AnandTech addressing battery life has been gaining renewed interest for its revelation that users running a Verizon iPad in personal hotspot mode can see as much as 25 hours of battery life to provide connectivity for their other devices. That number has also been confirmed by The Verge.

While Verizon is including personal hotspot functionality in its iPad data plans at no extra charge, AT&T has yet to announced whether it will even support the feature at all, noting only that it is "working with Apple" on the issue.

ipad_3_amps.jpg

Meanwhile, VR-Zone notes that the new iPad can draw as much as 2 amps of current when charging the battery from a nearly-depleted state, pushing the capacity of charging connections such as computer USB ports. Apple's supplied iPad power adapter provides for up to 2.1 amps of current from a wall outlet, and the company has long noted that this method offers the fastest charging on any iPad. Users can, however, still charge the device using the smaller 1-amp adapter included with an iPhone or by connecting the dock connector cable directly to a computer's USB port. VR-Zone notes:
As you can see in the video below, the iPad in question only had seven percent battery life remaining and at this point it's sucking 1.98A. That's a lot of power and we were told by Gigabyte that they've seen it hitting just over 2A. That said, as you might've noticed from the picture above, this quickly drops once the iPad begins to charge, but considering a standard USB 2.0 port only delivers 500mA and even a USB 3.0 port will only deliver 900mA, you have to wonder how much Apple cares about PC owners.
The new iPad carries a 42.5 watt-hour battery, roughly 70% larger in capacity and size than the 25 watt-hour battery found in the iPad 2.

Article Link: More iPad Battery Notes: 25-Hour Hotspot Life, 2-Amp Current Draw from Discharged State
 

jambon

macrumors regular
Jul 15, 2010
182
217
London
Wirelessly posted

It wont even charge on the USB 3 port on my laptop. The supplied plug seems the only sensible way to do it.
 

markyr17

macrumors 65816
Apr 8, 2010
1,186
92
As you can see in the video below, the iPad in question only had seven percent battery life remaining and at this point it's sucking 1.98A. That's a lot of power and we were told by Gigabyte that they've seen it hitting just over 2A. That said, as you might've noticed from the picture above, this quickly drops once the iPad begins to charge, but considering a standard USB 2.0 port only delivers 500mA and even a USB 3.0 port will only deliver 900mA, you have to wonder how much Apple cares about PC owners.

That is absolutely ridiculous. Because a PC owner's USB port doesn't supply as much power as the included charger for the 3rd generation iPad, Apple is screwing over their PC owning customers? :rolleyes:

EDIT:

It's not like Apple can just go back and change the USB port specs. Obviously the iPad needs this amount of power to run their device, and they're not making it require so much power just to be jerks. That comment make absolutely no sense to me.
 

Small White Car

macrumors G4
Aug 29, 2006
10,966
1,463
Washington DC
VR-Zone said:
you have to wonder how much Apple cares about PC owners.

How many netbooks can charge over USB from a PC?

Seems like you should be pointing those out to me, VR-Zone, if you're trying to prove to me that this is something that devices with screens like this should be doing. I'm assuming it's a long list for you to make a comment like that. Would be nice of you to share.
 

SpinThis!

macrumors 6502
Jan 30, 2007
480
135
Inside the Machine (Green Bay, WI)
considering a standard USB 2.0 port only delivers 500mA and even a USB 3.0 port will only deliver 900mA, you have to wonder how much Apple cares about PC owners.
Yeh Apple doesn't care about PC owners, they care about the user experience. The wall charger obviously provides the fastest juice so why not take advantage of that? USB was really only meant to provide power for low-usage devices.

JUst plug the damn thing into a wall outlet. Good grief. Apple supplies one with it. Why not use it?
Exactly. Someone might have a case if Apple weren't providing one in the box.
 

Richdmoore

macrumors 68000
Jul 24, 2007
1,957
356
Troutdale, OR
That is absolutely ridiculous. Because a PC owner's USB port doesn't supply as much power as the included charger for the 3rd generation iPad, Apple is screwing over their PC owning customers? :rolleyes:

Yep, apple included not only an ac adapter, but also wifi syncing.

With wifi syncing, there is no need to connect to either a pc or mac, which don't provide enough power for the current or future iphone/ipod touch/ipad.
 

swarmster

macrumors 6502a
Jun 1, 2004
641
114
"...but considering a standard USB 2.0 port only delivers 500mA and even a USB 3.0 port will only deliver 900mA, you have to wonder how much Apple cares about PC owners."

This is so true! Apple clearly should have hard-capped the charging power at 2.5W to somehow prove it cares about PC owners (?????)! Why didn't I see it before?

Apple ships a 10W (= 2A) charger with the iPad, and ever since iPad 1 has said that will charge it fastest (duh). There is nothing wrong with charging at lower current levels, except, obviously, you're charging slower.

The ignorance in all the recent iPad reporting has been mind-boggling. Until you realize that they probably all know better, it's just disparaging headlines about Apple brings the most traffic.
 

timd.mackey

macrumors member
Jun 8, 2010
35
29
With WiFi syncing and iCloud syncing, there are very few reasons left to ever plug your iPad into your computer.
 

camnchar

macrumors 6502
Jan 26, 2006
434
415
you have to wonder how much Apple cares about PC owners
Apple cares so much they included a charger so PC owners can charge their iPad from the same outlet they plug their PC into.
 

rosalindavenue

macrumors 6502a
Dec 13, 2003
855
282
Virginia, USA
My ipad 1 would not charge from the USB ports on my 2011 Dell desktop at work. I applied that ASUS hack that increased the voltage and then it charged, but s l o w l y. This is not a new issue. I think that the Consumer reports testers were using an USB port when they ran their test; I can pretty much guarantee that my ipad one would not get any charge while playing infinity blade and charging from my Dell.
 
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btbeme

macrumors 6502
Jul 29, 2010
292
755
..."considering a standard USB 2.0 port only delivers 500mA and even a USB 3.0 port will only deliver 900mA, you have to wonder how much Apple cares about PC owners."

Oh golly gee, a single tear rolls down my cheek.

If we limited ourselves to using old standards to support new technology, we would still be using Windows.
 

Peace

Cancelled
Apr 1, 2005
19,546
4,556
Space The Only Frontier
..."considering a standard USB 2.0 port only delivers 500mA and even a USB 3.0 port will only deliver 900mA, you have to wonder how much Apple cares about PC owners."

Oh golly gee, a single tear rolls down my cheek.

If we limited ourselves to using old standards to support new technology, we would still be using Windows.

We are using an "old standard". It's called. wait....


Electricity !!!!

Wow. what a concept.
 

H2SO4

macrumors 603
Nov 4, 2008
5,692
6,963
2 amps is a LOT of current. It only takes milliamps to kill a person. Of course the voltage would need to be higher, but still.. 2A.

A lot higher. Honestly I've no idea why people harp on about it takes milliamps to kill. Virtually everything you come across in life produces in excess of the 30mA that it apparently takes to kill you.
 

longofest

Editor emeritus
Jul 10, 2003
2,925
1,695
Falls Church, VA
2 amps is a LOT of current. It only takes milliamps to kill a person. Of course the voltage would need to be higher, but still.. 2A.

Actually, it takes hundreds of DC milliamps to kill a person, and that's assuming there is little to no resistance (aka skin http://hypertextbook.com/facts/2000/JackHsu.shtml).

Ohms law: W=VI. So, at 2 amps running at 5 Volts for USB, you're still only drawing 10 Watts. That's less than even most CFL light bulbs.
 

Mr. Retrofire

macrumors 603
Mar 2, 2010
5,064
519
www.emiliana.cl/en
..."considering a standard USB 2.0 port only delivers 500mA and even a USB 3.0 port will only deliver 900mA, you have to wonder how much Apple cares about PC owners."

Oh golly gee, a single tear rolls down my cheek.

If we limited ourselves to using old standards to support new technology, we would still be using Windows.
USB 3.0 old technology? *lol* Really? That must be the reason, why Apple supports USB 3.0, in the next MBPs and MBAs. Yeah, that must be the reason! Not!?

And regarding Windows:
I can do much more on Windows, than on the Mac OS X platform. Windows is a very modern, stable OS. I know it sounds absurd for you, but i plan to buy a Windows-based workstation for video editing/encoding (perhaps a Mac Pro or HP (both with Windows 7 SP1)).
 
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