Sidebar Sidebar
Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

How much time your iPAD needs to fully charge?

Perene

Perene

macrumors 6502a
Original poster
Jun 29, 2015
835
321
Netherealm
I decided to do the following test:

- First and foremost, run the device’s battery down to zero. And by that, we mean the device runs completely out of juice and powers down on its own.

- Next, charge the device’s battery all the way up to the 100% mark.

I tried this with the Pro 9.7 256 GB wifi+cel, used less than a week, and bought a month ago.

Once the device was turned off and I connected this iPAD to the original charger, the clock started. All the time I let it closed (not using), with the Smart Cover, and in airplane mode.

It took exactly 3 hours and 42-43 minutes to reach from 0 to 100%.

This iPAD has only 3 full cycle charges. It's the MLQ62CL/A model.

I'll conduct this test again, this time with the 4, that was used practically everyday since I bought in 2013, and post the results here, later.
 
OK, final test with another iPAD.

Model: MD512BZ/A
iPAD 4th generation, 64 GB, wi-fi only.

Bought between December 14, 2012 and January 26, 2013 (confirmed). Used everyday since then, most of the time.

Battery app says it has 805 full cycle-charges.

It took 4 hours and 40 minutes approximately, to charge this battery, from 0 to 100%. So, overall, I need to wait another hour compared to a brand-new IPP 9.7 that hasn't been used.

More details about the battery health from both equipments when fully charged (the IPP 9.7 still displaying 100%, but used for a couple of minutes, that's why you see 98% in the first battery info):

http://imgur.com/a/17oYb

P.S.: the green screenshots are from the IPP 9.7, the other from the iPAD 4. This app says 0% (perfect) for the IPP, and 30% for the iPAD 4, in terms of degradation.

P.P.S. The screen brightness was also lowered in both iPADS prior to this test.
 
Perene said:
I decided to do the following test:

- First and foremost, run the device’s battery down to zero. And by that, we mean the device runs completely out of juice and powers down on its own.

- Next, charge the device’s battery all the way up to the 100% mark.

I tried this with the Pro 9.7 256 GB wifi+cel, used less than a week, and bought a month ago.

Once the device was turned off and I connected this iPAD to the original charger, the clock started. All the time I let it closed (not using), with the Smart Cover, and in airplane mode.

It took exactly 3 hours and 42-43 minutes to reach from 0 to 100%.

This iPAD has only 3 full cycle charges. It's the MLQ62CL/A model.

I'll conduct this test again, this time with the 4, that was used practically everyday since I bought in 2013, and post the results here, later.
Click to expand...
One of the biggest flaw that you failed to mention was what power charger did you use? I use 12 w charger. I think the standard is 10.
 
  • Like
Reactions: ABC5S and ShaunAFC3
Although not a direct correlation (charging speeds vary depending on the current charge levels), 20% higher charging power is actually quite significant. So if your charging time was 3 hours under 10W, you're talking about a potential 30 minute reduction with 12W ( 3h x 10W / 12W or 16.7% faster)

If you want the absolute fastest charging time on any iOS lightning device without regard to cost, the most brain-dead approach is to get the 29W adapter + USB-C to lightning. That will charge at the fastest possible rate, be it 10W / 12W / 29W.
 
  • Like
Reactions: ShaunAFC3
masotime said:
Although not a direct correlation (charging speeds vary depending on the current charge levels), 20% higher charging power is actually quite significant. So if your charging time was 3 hours under 10W, you're talking about a potential 30 minute reduction with 12W ( 3h x 10W / 12W or 16.7% faster)

If you want the absolute fastest charging time on any iOS lightning device without regard to cost, the most brain-dead approach is to get the 29W adapter + USB-C to lightning. That will charge at the fastest possible rate, be it 10W / 12W / 29W.
Click to expand...
I went to Apple Store today and this guy told me that 29 w wasn't recommended because it would kill battery life.
 
A few tips concerning the battery health. The discussion is about the need to fully discharge the battery. It is said that in fact this is detrimental to the capacity:

http://www.tabletpcreview.com/feature/how-to-extend-the-battery-life-of-your-ipad-or-phone/

http://forums.imore.com/ask-question/293828-do-we-really-need-fully-discharge-once-month.html

I was monitoring here the iPad Pro 9.7 I have, one model with 128 GB wifi only, and the other 256 wifi+ cel. After about 22 cycles, the 256 model has lost 1% of its capacity, and after 12 cycles, the 128 one lost 2%.

What is odd is this: it was 0% until the 10th cycle for the 128, then I let the battery drain to 5% and tried to charge before going to bed. After I wake up the other day, it was down to 2%. There was nothing wrong with the iPad, it was simply the old surge protector that wasn't feeding energy properly, then once I connected the iPad charger to the wall socket directly, it resumed charging.

However, only after this event is that the app says the battery lost 2% of its capacity. Since I wasn't using before to almost 0%, I can only assume this (or the fact I let on the surge protector without actually charging) was detrimental to the battery health. I only let it drain to 0% once, and both iPads, once I received them.
 
You must log in or register to reply here.
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.
Top Bottom
Back