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New iPad 0% to 100% takes 6 hours
- Thread starter coolwater
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If you can read the microscopic fine print on your iPad stock charger you'll see "5v 2a"
and you're iPhone charger you'll see "5v 1a"
It really has nothing to to do with the cable and all about the wall adapter as you can see the iPad charger puts out 10 watts(5 volts x 2 amps) whilst the iPhone charge puts out a measly 5 watts and taking twice as long to charge. Just for messing around I found a 5 amp 5 volt or 25 watt power supply and the iPad 3 didn't charge any faster.
It takes 5 1/2 hours to charge mine. I charge it over night so it doesn't really matter how long it takes. When I wake up my iPad is ready to go.
That's true. I was kind of disappointed when they killed off my Firewire charger. That thing was great.
I ran mine down to zero last night so I could charge it overnight to calibrate the battery. The first time I charged it, it was on the USB port of my iMac and it took forever (didn't time it, but much longer than 6 hours). Taking the advice of others on this forum, I used the built in cable and wall wart last night. Getting much more sleep than MykullMyerz (I get about 6 1/2 hours of sleep a night), it was fully charged in the morning.
Yup I rally wish Apple would just make a 'Charging your iPad website' to clarify all of this confusing stuff about charging rates and different charging wattages. The newer Mac's (notebooks/desktops) all put out 1 amp on their usb ports which is the same as the iPhone adapter, but half the output of the 2 amps on your iPad charger. If you think that's bad, pity the poor PC user who's stuck with only 0.5 Amps! (the exception of some 3rd party motherboards that can put out >1 amp on their usb ports.)
sigh. a usb has the ability to act as a power source, some devices can be powered via usb while others do not. cause there is a line especially for it, its whether that device wants to tap it.
[the lines in a usb cable does not only consist of signals]
either they draw, or whatever, its still the same. all power hungry devices draw power inorder to work.
ur toaster draws power from a power plug, so what? ur wall plug isnt a power source?
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2A thru a 3ft wire incurs quite a substantial loss, get an extension between the wallplug and the adapter.
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like i had previously said. all new innovation comes with its trade-off. but not having done it, n further improving it, and finding something even better - is the worse backstep taken.
u can talk about all the inefficiencies in the world. but if u dont improve or find anything better, humanity will never advance anymore.
but what makes the world go around is money right now. humanity has gone one step back. the gov has to force the money in field where business makes no sense anymore.
passenger flight in supersonic speed died last decade and will most likely never be revived. however, thankfully such has not been abandoned. for example fighter jets in the military, where money is pumped in by the gov, indirectly by us taxpayers.
n fyi, concorde was profitable, even till its very last flight. but the commercial airliners earned much more from current passenger planes, that they totally phased it out.
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It CAN have something to do with the cables. Cheap/long cables have a higher resistance, and lower current than the short cable provided in the box.
I found this from personal experience by surfing the web while trying to charge, using the factory provided charger and a 6' Monoprice cable. Spent and hour at 84%, not charging at all. Switched to the shorter cable from the iPad box, and started charging at 10% per hour, while maintaining the same usage.
Someone else started a thread, and had measured the current provided by a few cables. The current varied quite a bit, with the short factory cable providing the best performance.
C
No? Then what's this:
Hmm yes I see your point, clearly I made a wild interpretation.
Clearly you have never run a business. Sourcing components at the lowest possible price is not the same as souring cheap components. Lets say you issue a tender for 50 million display panels with xyz specification and the lowest cost supplier gets the business. The lowest cost supplier might be $70/unit. That's totally different to going down to Joe's Mini Mart and buying a load of cheap displays for $10 each.
Your complaint was that Apple went with the lowest cost supplier of available screens (with the implication that this is a bad thing), that Apple did this instead of making something better themselves, and that Apple had nothing to do with the design, specs, etc. of the screens.
For someone unfathomable reason, you think Apple is obliged to produce a screen (or battery, or something else) themselves even if they can get exactly what they have in mind elsewhere from a company with the competitive advantage to do so at a better price.
Please use some punctuation, and if you are in the US, Canada, UK, Australia, or another English-speaking country, please use proper english all the way through.
Concorde was profitable because the planes were paid off back in the day of high, regulated airline prices. In today's world, the capital of such a thing wouldn't be paid off. It's hard to compete with an Airbus A380 or 747/777 planes when they can fly the route at 1/4 the cost.
There was something cool about being able to have breakfast in London and New York, but cool doesn't make it profitable.
Have you not been reading the multiple threads? As I've already found out by cutting up a USB adapter and plugging in a 25 watt power supply, it's the Dock connector that has now become a liability. It can't safely handle more than 10 watts in it's current form. How would Apple's reputation fare when iPad's start catching on fire or melting the dock connectors if they decided to ship the iPads with 40 watt power adapters and kept the same connectors? There's already over a hundred posts freaking out about yellow screens and uneven backlight already...
The point was more aimed at your statement that charging through a USB port would somehow burn it out since the iPad needs more power. This is simply untrue. The iPad will not draw more power than the USB port can provide and as such, the USB port is working within its specifications which just won't let it burn itself out because an iPad has a bigger battery or needs longer to charge.
really, i have no qualms with u thinking that way, keep thinking that usb controllers cant be burnt out.
The WiFi version takes the same amount of time to charge up. And the 4G chip doesn't seem to drain the battery that much faster than WiFi anyway. (9 hours vs 10 hours)
And the iPad does come with MiFi capabilities... if your carrier supports it. Verizon in the US does, and you an connect up to 5 devices using the ipad's 4G signal.
You would do well to read the ENTIRE forum and not focus on a handful of people who claim to have returned 80 iPads each or some such nonsense for even the most minute issue that no sane person would even notice.
i use my iPad 2 non-stop all day at work and have ~10% battery life left when i leave the office. then i turn the iPad off and plug it into a 2A car charger for my 1hr commute home. by the time i get home it's nearly at 100%. can't be that
but i don't have retina...
but i don't have retina...
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I think its pretty silly that some of you are risking fires and product reliability because you don't have the patience to let it charge, further you could still use your iPad with it plugged in, so I really don't see what all this charge length complaints are all about.