I don't understand this problem with charge time, just hook it up before bed and if it needs to be charged during the day just use it on the charger.
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Where to get a bigger charger for the new iPad?
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Try this...
BUT, from what I've been told it will not make a difference in charging times.
And that is......?
Two Apple 10w Power bricks coupled with a Dual USB Cable. The dongle at the end is a short USB to 30pin.
The Dual USB cable came from a 2.5 HD Enclosure Kit.
But, as previous posters has stated this set will not speed up the charging process.
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Not entirely true...
Devices do limit draw to a point... However the limit that apple tells people is FAR less than what ios devices can really draw - especially newer devices. Pretty much any iphone/iPod before gen 4 won't draw more than 1A max... Same with the ipad 1. I don't have a ipad 2 anymore to test
Here is the data I used to test mine and my partners various ios devices in various circumstances with various chargers
My ipad 4 came with a newer apple 5.2v , 2.4a charger (from apple).... Or 12.48 watts. If use my ipad4 under full load*, with it plugged into that 12.5w charger, the battery will slowly drain. Meaning 12.5 watts is not enough to handle the ipad 4 under full load* AND charge the battery... this means The ipad 4 is drawing MORE than 12.5w under full load* as its getting 12.5w and slowly taking power from the battery. Chances are if it can consume that much, you can feed it that much... And more... This also tells my the battery is capable is supplying more than 12.5w to the 4... And if it can supply it, it can usually consume it...
...Not to mention that 12.5w adapter takes an insane 8-9hrs to charge the ipad4 from 0-100% when in sleep/lock mode. Tbh it should just be called lock mode. The device doesn't sleep. No ios devices really sleep. If charging, it stays connected to wifi, etc. the screen is simply off (which is a big reduction in power, other than that , the device run normally). If the 4 is powered down, it charges in 6-7 hrs.
True each device does limit what they can draw, much the limits are higher than apple lets ppl believe.. It there are warning to consider... Example, with the 12.5w charger, my ipad gets fairly warm when under full load* .. And a battery heats up when charged..and the faster it's charged, the hotter it gets. This could be why Apple doesn't pack a 20w charger with the ipad 4... But lets see what happens during my tests
So I went and bought a 5v, 3a (15w)USB charger, and then a 5v, 5a USB charger (25w)
My findings on my various devices (with devices in lock/sleep but not off). All devices were tested in a room with the ambient air temp of 66F
iPhone 4S:
Locked:
1) 5w charger - 5hrs to charge*** when locked
2) 10w - 2.5-3hrs to charge when locked
3) 12.5w - 2hrs to charge
4) 15 & 25w - 2 hrs
Under full load*
1) 5w - slow battery drain
2) 10w - sometimes VERY slow drain, sometimes no drain, sometimes VERY slow charge. Depended on the app being run
3) 12.5w - never any drain. Always a slow charge if one was needed
4) 15w - no drain, but faster battery charge and device got pretty warm
5) 25w no drain, and battery charged at the rate as if it were locked and on a 12.5w charger. DEVICE GOT VERY HOT AND A YELLOW TRIANGLE CAME UP WITH A DEVICE OVERHEAT AND SHUT THE PHONE DOWN.
iPhone 5: not tested. I don't own one
Ipad 3:
Locked:
1) the 12.5w , ipad 4, charger sped up charging by 15-20%
2) the 15w charger sped up the charging time by nearly 50%
3) the 25w charger, sped up the charge time by nearly 50%
Full load*:
1) 5w - not charging message, battery would never charge, moderate battery drain... But still slower vs on pure battery.
2) 10w - battery would never charge, slow drain
3) 12.5w - never any drain, VERY slow battery charge, unit was warm
4) 15w - no drain, slow battery charge
5) 25w no drain, battery charged much faster... Device got quite hot, but did not display heat error nor shut down
Ipad 4:
Locked:
1) the 12.5w , ipad 4, charger took just over 9hrs
2) the 15w charger sped up the charging time by about 20%.. About 7h50m
3) the 25w charger, sped up the charge time by nearly 50%.. About 4.5 hrs
Full load*:
1) 5w - not charging message, battery would never charge, fast battery drain... But still slower vs on pure battery.
2) 10w - battery would never charge, fast drain
3) 12.5w - slow drain unit was warm
4) 15w - very slow drain, unit was very warm. Not hot
5) 25w - no drain, battery charged at moderate speed, unit got very hot. Once it got the heat warning and powered down, but I had the unit lying on my bed while played with it. As long as I held it up in the air it was ok
Summary:
It looks like Apple limits chargers to prevent device overheating and damage as not everyone will b running them in a controlled environment of 66 F
However this does show that newer, higher end, ios devices WILL benefit from a 15-20w charger. Anything over 20 risks overheat under full load while charging.
*=max brightness, Bluetooth on, cellular data on, wifi on, and a very intensive 3d game.
**=the percent used is percent of time reduction based on the avg time to charge my device. So 100%, by my scale would be instant. If my charge time is normally 10hrs, then a 50% reduction would mean the device charged in 1/2 the time , or 5hrs.
***=time to charge from fully drained to 100%
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It will for newer ios devices
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Wrong apple can't sue over 3rd party chargers. They already exist lol. They have been for years
I just tried this and it works with my ipad 4. The charging times...under full load behavior are between a 15 and 25 watt charger.
Biggest one they make
http://www.amazon.com/Apple-12W-USB...8&qid=1373664219&sr=8-4&keywords=ipad+charger
http://www.amazon.com/Apple-12W-USB...8&qid=1373664219&sr=8-4&keywords=ipad+charger
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Biggest one APPLE makes. You don't need an apple charger. Example my PS vita charger works on my idevices.
I bought 3rd party USB chargers that were 5v, 3a, and 5v, 5a. You can get them from various electronics websites.
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Example:
http://sale-fire.com/5v%20Power%20Adapter%203a?gclid=CJWFmtf6qrgCFShp7AoddAcAww
As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
Or use this. It's made as an external battery but it can output 5v, 3a (15w) out a single USB port. It's halved to 7.5w if u use two devices. But if u use just one ipad4, and leave that battery plugged in, it will supply more power than apples 12w charger
http://www.amazon.co.uk/Lightning-S...&keywords=5v+3a+3000ma+USB#productDescription
As an Amazon Associate, MacRumors earns a commission from qualifying purchases made through links in this post.
the voltage of data+ and data-
Hi, there, I think for the moment you are almost the one that has done enough work on this topic.
I have a new ipad and want to charge it faster but it didn't work out.
I bought 15w charger but it won't charge ipad at 3A. I modified the output resistors of the usb port. For the moment I know that the original ipad 10w charger has 2.7v at data+ and 2.1 v at data-. The original ipad 12w charger has both 2.7v at data+ and data-. So what is your voltage at data+ or data- for your 15w and 20w charger?
I tired my 15w charger. First 2.7 for d+ and 2.1 for d-, but it charges at 2A speed. Then 2.7v for both d+ and d- it still charges at 2A speed, mayber more but it is definitely not 3A speed.
Thank you.
Not entirely true...
Devices do limit draw to a point... However the limit that apple tells people is FAR less than what ios devices can really draw - especially newer devices. Pretty much any iphone/iPod before gen 4 won't draw more than 1A max... Same with the ipad 1. I don't have a ipad 2 anymore to test
Here is the data I used to test mine and my partners various ios devices in various circumstances with various chargers
My ipad 4 came with a newer apple 5.2v , 2.4a charger (from apple).... Or 12.48 watts. If use my ipad4 under full load*, with it plugged into that 12.5w charger, the battery will slowly drain. Meaning 12.5 watts is not enough to handle the ipad 4 under full load* AND charge the battery... this means The ipad 4 is drawing MORE than 12.5w under full load* as its getting 12.5w and slowly taking power from the battery. Chances are if it can consume that much, you can feed it that much... And more... This also tells my the battery is capable is supplying more than 12.5w to the 4... And if it can supply it, it can usually consume it...
...Not to mention that 12.5w adapter takes an insane 8-9hrs to charge the ipad4 from 0-100% when in sleep/lock mode. Tbh it should just be called lock mode. The device doesn't sleep. No ios devices really sleep. If charging, it stays connected to wifi, etc. the screen is simply off (which is a big reduction in power, other than that , the device run normally). If the 4 is powered down, it charges in 6-7 hrs.
True each device does limit what they can draw, much the limits are higher than apple lets ppl believe.. It there are warning to consider... Example, with the 12.5w charger, my ipad gets fairly warm when under full load* .. And a battery heats up when charged..and the faster it's charged, the hotter it gets. This could be why Apple doesn't pack a 20w charger with the ipad 4... But lets see what happens during my tests
So I went and bought a 5v, 3a (15w)USB charger, and then a 5v, 5a USB charger (25w)
My findings on my various devices (with devices in lock/sleep but not off). All devices were tested in a room with the ambient air temp of 66F
iPhone 4S:
Locked:
1) 5w charger - 5hrs to charge*** when locked
2) 10w - 2.5-3hrs to charge when locked
3) 12.5w - 2hrs to charge
4) 15 & 25w - 2 hrs
Under full load*
1) 5w - slow battery drain
2) 10w - sometimes VERY slow drain, sometimes no drain, sometimes VERY slow charge. Depended on the app being run
3) 12.5w - never any drain. Always a slow charge if one was needed
4) 15w - no drain, but faster battery charge and device got pretty warm
5) 25w no drain, and battery charged at the rate as if it were locked and on a 12.5w charger. DEVICE GOT VERY HOT AND A YELLOW TRIANGLE CAME UP WITH A DEVICE OVERHEAT AND SHUT THE PHONE DOWN.
iPhone 5: not tested. I don't own one
Ipad 3:
Locked:
1) the 12.5w , ipad 4, charger sped up charging by 15-20%
2) the 15w charger sped up the charging time by nearly 50%
3) the 25w charger, sped up the charge time by nearly 50%
Full load*:
1) 5w - not charging message, battery would never charge, moderate battery drain... But still slower vs on pure battery.
2) 10w - battery would never charge, slow drain
3) 12.5w - never any drain, VERY slow battery charge, unit was warm
4) 15w - no drain, slow battery charge
5) 25w no drain, battery charged much faster... Device got quite hot, but did not display heat error nor shut down
Ipad 4:
Locked:
1) the 12.5w , ipad 4, charger took just over 9hrs
2) the 15w charger sped up the charging time by about 20%.. About 7h50m
3) the 25w charger, sped up the charge time by nearly 50%.. About 4.5 hrs
Full load*:
1) 5w - not charging message, battery would never charge, fast battery drain... But still slower vs on pure battery.
2) 10w - battery would never charge, fast drain
3) 12.5w - slow drain unit was warm
4) 15w - very slow drain, unit was very warm. Not hot
5) 25w - no drain, battery charged at moderate speed, unit got very hot. Once it got the heat warning and powered down, but I had the unit lying on my bed while played with it. As long as I held it up in the air it was ok
Summary:
It looks like Apple limits chargers to prevent device overheating and damage as not everyone will b running them in a controlled environment of 66 F
However this does show that newer, higher end, ios devices WILL benefit from a 15-20w charger. Anything over 20 risks overheat under full load while charging.
*=max brightness, Bluetooth on, cellular data on, wifi on, and a very intensive 3d game.
**=the percent used is percent of time reduction based on the avg time to charge my device. So 100%, by my scale would be instant. If my charge time is normally 10hrs, then a 50% reduction would mean the device charged in 1/2 the time , or 5hrs.
***=time to charge from fully drained to 100%
----------
It will for newer ios devices
----------
Wrong apple can't sue over 3rd party chargers. They already exist lol. They have been for years
Hi, there, I think for the moment you are almost the one that has done enough work on this topic.
I have a new ipad and want to charge it faster but it didn't work out.
I bought 15w charger but it won't charge ipad at 3A. I modified the output resistors of the usb port. For the moment I know that the original ipad 10w charger has 2.7v at data+ and 2.1 v at data-. The original ipad 12w charger has both 2.7v at data+ and data-. So what is your voltage at data+ or data- for your 15w and 20w charger?
I tired my 15w charger. First 2.7 for d+ and 2.1 for d-, but it charges at 2A speed. Then 2.7v for both d+ and d- it still charges at 2A speed, mayber more but it is definitely not 3A speed.
Thank you.
i charge my iPad battery overnight and never have had to worry about it dying. if i had like 30-40 percent the night before i would let it charge overnight. you guys have some heavy usage!