Charging the new iPad...


kmichalec

macrumors 6502a
Aug 14, 2010
813
198
I wouldn't really classify that as being a "bitch" to charge. Bigger battery equals more charging time. Not really a surprise there. Just plug it in at night. Issue solved.
 

HeySamantha

macrumors member
Mar 15, 2012
50
0
I think it's cute that it comes with it's own little mini wall plug-in, but will I still use the charger that came with the iPhone, as well?
 

CNeufeld

macrumors 6502a
Nov 25, 2009
937
503
Edmonton, AB
I think it's cute that it comes with it's own little mini wall plug-in, but will I still use the charger that came with the iPhone, as well?
Good luck with that... The iPhone charger puts out half the amps of the iPad charger, I think. I would use the iPad one whenever possible.

C
 

Clix Pix

macrumors demi-goddess
No, you need to use the power supply which comes with the iPad, as it is more powerful than the one for the iPhone or iPods.

Not a big deal to me that it might take longer to charge the new iPad; I usually charge mine overnight anyway, so that will not be an issue.
 

HeySamantha

macrumors member
Mar 15, 2012
50
0
Good luck with that... The iPhone charger puts out half the amps of the iPad charger, I think. I would use the iPad one whenever possible.

C
thought so. Oh well, it'll be getting charged overnight anyway. Makes no difference haha
 

brandon8419

macrumors member
Oct 11, 2011
69
5
eh, won't bother me. As others said, I'll charge it overnight

I'm sure it's obvious, but do you plan to run your battery dead on the first use and then do a full charge? Or is all that stuff just an urban myth - I don't want to hurt the battery life on my first use lol
 

santaliqueur

macrumors 65816
Aug 7, 2007
1,007
486
No, the iPhone charger does not have enough (amperage?) to charge the iPad.
I bet all the chargers will still work. I charge my iPad on the dock connected to a powered USB hub. The battery symbol says "Not Charging", but it is charging, only very slowly. Probably under 10%/hour. That's fine for charging overnight.
 

hcho3

macrumors 68030
May 13, 2010
2,782
0
I don't see any of this as an issue. I will be glad to take retina display over this small complain.
 

CNeufeld

macrumors 6502a
Nov 25, 2009
937
503
Edmonton, AB
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santaliqueur said:
No, the iPhone charger does not have enough (amperage?) to charge the iPad.
I bet all the chargers will still work. I charge my iPad on the dock connected to a powered USB hub. The battery symbol says "Not Charging", but it is charging, only very slowly. Probably under 10%/hour. That's fine for charging overnight.
At 10% per hour, it would take 10 hours to fully charge the iPad 2. The new iPad battery is 70% larger. That puts it at 14 hours to fully charge, according to my math.

C
 

onthecouchagain

macrumors 604
Mar 29, 2011
7,380
1
Longer charge time is a fairly minor inconvenience, but the pay off of maintaining 10-hour battery life is worth it.
 

gigaguy

macrumors 65816
Apr 19, 2010
1,346
114
USA
I wonder if there is any diff between fast or slow charging pertining to wear, life. I'd guess faster is better, since it uses less time. I usually use the slower iPod/iPhone charger overnight. The iPad one is big and bulky for where I plug in near the bed.
 

crapbag8

macrumors member
Aug 10, 2010
36
0
Interesting to see if there will be any solutions to this in the future, whether from Apple or other third party accessories. Most people will charge overnight (myself included) but it's nice when you're in a hurry to get out of the house and you can plug in your iPhone for 20 minutes and get a decent percentage charged.
 

Chupa Chupa

macrumors Pentium
Jul 16, 2002
15,089
7,369
I don't really see it as a big deal if battery life is them b/c if I do let it go all the way down it charges overnight when I'm not using it. But rarely to I let it go below 40% before I charge. I think there is an Apple tech note stating it's not good for the battery to let it constantly fall below 20% except for a monthly maintenance.
 

Nothlit

macrumors regular
Sep 14, 2009
242
18
The iPad 2 has a 25 watt-hour battery. The third-gen iPad has a 42 watt-hour battery. The following estimates assume a simple calculation of (watt-hours)/(watts) = (hours), which is not necessarily true in the real world (see below).

An iPad wall charger outputs 10 watts (5 volts @ 2 amps). Therefore, it could theoretically charge an iPad 2 in about 2.5 hours, or an iPad 3 in 4.2 hours.

An iPhone wall charger outputs 5 watts (5 volts @ 1 amp). Therefore, it could theoretically charge an iPad 2 in about 5 hours, or an iPad 3 in about 8.4 hours.

A typical USB 2.0 port outputs 2.5 watts (5 volts @ 0.5 amps). Therefore, it could theoretically charge an iPad 2 in about 10 hours, or an iPad 3 in about 16.8 hours. (Some USB ports output as little as 0.5 watts, resulting in theoretical charge times of 50 hours and 84 hours, respectively.)

All that being said, battery charging is not a linear process, so the actual charging times are probably slightly longer than what I calculated above and not necessarily direct multiples of each other, especially once you start calculating partial charge times (i.e., 80% to 100% rather than 0% to 100%). This is just a theoretical estimate to give an idea of the scale between the different charging sources and the new iPad vs. the iPad 2.
 
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Tribefan

macrumors member
Aug 2, 2011
43
0
Charlotte, NC
Here's a question: I saw a charging cradle that charges an iPad and iPhone simultaneously. If the iPhone would charge an iPad too slowly, would using an iPad charger on an iPhone charge it much faster than the standard charger? Would it cause any damage or premature failure to the iPhone's battery?
 

iohass

macrumors regular
Mar 11, 2012
164
0
Canada
I charge my ipad1 once every 3-4 days probably.. maybe even less often.

No problem leaving it overnight for me.
 

Geckotek

macrumors G3
Jul 22, 2008
8,566
78
NYC
I bet all the chargers will still work. I charge my iPad on the dock connected to a powered USB hub. The battery symbol says "Not Charging", but it is charging, only very slowly. Probably under 10%/hour. That's fine for charging overnight.
Sorry, that's not "working" in my definition.
 

Nothlit

macrumors regular
Sep 14, 2009
242
18
Here's a question: I saw a charging cradle that charges an iPad and iPhone simultaneously. If the iPhone would charge an iPad too slowly, would using an iPad charger on an iPhone charge it much faster than the standard charger? Would it cause any damage or premature failure to the iPhone's battery?
The amount of power drawn from the charger depends on the device being charged, not the charger.