How long does it take to charge a iPad 3 from 0 %
How long does it take to charge a iPad 3 from 0 % or called the new iPad
iPad 3 or the new iPad -OTHER
Several hours. I suggest that you play it safe and charge it overnight.
34 replies
It would be useful to know approx how long it takes to reach 100% from zero charge. Apple does now give any indication. "Overnight" is rather vague, the actual number of hours would be more useful, eg 6 hours, 8 hours etc. Has anyone done any tests?
Mine got to 92% in about 5 hours - I'd guess that it would have taken another half hour or so to get up to 100%
I don't know why that would be useful as I'm usually sleeping during the overnight period. However, it's easy to find out. Deplete the battery and then connect to the charger. Note the time. When it's fully charged, note the time again.
^ Thanks for that info. Did you charge it from 0%? By the way, there are reports that the new iPad keeps charging for about two hours after it reaches 100%, although I'm not sure if this was measured on just one sample or more. Anyway, it would be a good idea to keep it plugged in after it reaches 100% to be sure that the battery is indeed fully charged.
You did not say under what conditions. It will not charge while be used at 100% brightness, it can only keeps its charge at best. While being used at 50% brightness it will charge but slowly, how long exactly it takes depends entirely on what you are doing. In sleep mode it should take about 5.5 to 6 hours.
It was down to 2% - didn't continue charging it up to 100% as I don't like leaving things charging overnight.
Mine goes from 0-80% in 4 hours and from 80-100% in another 3 hours. That's quick for a battery that's nearly twice the size.
To clarify, I meant how long it would take to charge from 0% to 100% in sleep mode.
I plug my iPad in at night and when I wake up in the morning it's 100% charged (after approx 8 hours). But I don't know how long it takes to reach that 100%. In view of reports about it continuing to charge for approx two hours after it reaches 100%, I wanted to have some idea of when I reaches 100%.
Thanks to all those who posted their findings above.
firoze wrote:
In view of reports about it continuing to charge for approx two hours after it reaches 100%...
How reliable are these reports? How was the determination made?
^ the guy who did the test is well regarded:
However, like I said earlier, I don't know if the test was done only on one iPad or more than one...
Well, I don't know that the conclusion is innaccurate but I don't hold the guy in high regard.
"Soneira found that the iPad continued to draw 10 watts of electricity..."
No device in the world draws wattage. It draws current, which is measured in amps (amperes).
Further, according to Apple (what do they know?), the charge current drops significantly at the two-hour mark.
^ You are right in that the charge current should drop off around 80%. For them on it charges much more slowly. However this guy did measure his iPad drawing 10 watts after it reached 100%. Only, we don't know if other iPads also exhibit this behaviour or it is only his sample. Hopefully someone else will conduct another test.
I can't imagine how he measured that. As I said, devices do NOT draw watts. Period.
Second, even if he used correct semantics, there isn't a charger in the world that will continue to charge at the maximum rate after the battery reaches a 100% level. That's a good way to make a battery explode.
Why are you unwilling to accept Apple's explanation?
How long does it take to charge a iPad 3 from 0 %