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Battery takes forever to charge

It took forever for me to kill the battery with heavy use, and now I'm charging it and it's averaging 10% per hour . . .
 
Mine charged from 40% to 100% in about 5 - 6 hours overnight

I used it heavily for about 9 hours yesterday and loved every second of it.

100% down to 40% of heavy use over 9 hours? yea i'll take that
 
I drained my iPad out of the box (0%) then put it on charge. It took 4hr 45mins to get to 100%. Hope this helps people get an idea of charge time. I've used it for a while, including a game and it's only dropped 1%
 
I'm going to hold off signing up for LTE until I know if my iPad truly has a battery problem. I don't want the hassle of trying to get my money back if the iPad has to be returned.
 
You couldn't have had a 10w charger that was only 1 amp--5v at 1a is only 5 w. You mostly likely had the standard iPhone/iPod 5w charger that is 1 amp.
Click to expand...

I'll check the charger again when I get home and report back.
 
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ninaco said:
I'm going to hold off signing up for LTE until I know if my iPad truly has a battery problem. I don't want the hassle of trying to get my money back if the iPad has to be returned.
Click to expand...

If you would just be swapping for a replacement, then you can just swap the SIM card and keep going on the plan with the replacement iPad.

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chalky40 said:
I drained my iPad out of the box (0%) then put it on charge. It took 4hr 45mins to get to 100%. Hope this helps people get an idea of charge time. I've used it for a while, including a game and it's only dropped 1%
Click to expand...

That's not too bad. I wonder how quick it got from 0 to 80%.
 
I bought mine in store and the guy told me not to charge it with any other charger other than the one in the box as it is a more powerful charger which is needed for the bigger battery. Is this true I take it? If so then people who are suffering problems are you using an old iPhone charger for instance??
 
seadragon said:
Important note!

Be sure to check the Amp rating on the charger too. I had a couple of 10 Watt apple chargers from the past but they are only 1.0 amp. The one that comes with the iPad is 2.1 amp. This is in really small print on the side of the charger and other than that number, they look identical.
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Are you sure they aren't cheap ebay Chinese junk chargers?

How is that possible?

From the basic electrical formula of Amps = Watts / Volts

5 watts/5 volts = 1 amp
10 watts/5 volts = 2 amp

(5 volts DC is the output of a USB charger)

Are you sure you're not looking at the 120VAC INPUT side or maybe just reading it wrong?
 
JacaByte said:
Apple doesn't provide any instruction on how to calibrate an iPad battery, but they do state here that it's a good idea to charge the battery to 100% and then completely drain it once a month. I would charge it until the charge percentage doesn't seem to be changing anymore, then I would drain the battery completely, then see if the iPad recharges to 100%.
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To be precise, apple says that a full charge cycle once per month results in more accurate reporting of charge level. This slightly different than sayng it is good to do that. Battery reporting will be more accurate but i think it also decreases the long term life expectancy of the battery. Modern batteries are least damaged by maintaining a constantly charged state.
 
chalky40 said:
I drained my iPad out of the box (0%) then put it on charge. It took 4hr 45mins to get to 100%. Hope this helps people get an idea of charge time. I've used it for a while, including a game and it's only dropped 1%
Click to expand...

Me too. About 4 1/2 hours. I don't know what the big deal is.
 
Using the ipad at 100% brightness while charging saw around 1% per 30 minutes charging rate.

I'm going to chalk that up to not having calibration. This is my first charge cycle. Let's see how that goes.
 
I was using the ipad2 charger, and it was not charging at all. With the ipad3 charger it is about 3% every 10 minutes. I also noticed yesterday the charge was extremely slow on the USB port, much slower than ipad2.
 
phx333 said:
I was using the ipad2 charger, and it was not charging at all. With the ipad3 charger it is about 3% every 10 minutes. I also noticed yesterday the charge was extremely slow on the USB port, much slower than ipad2.
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Then something is wrong with your iPad 2 charger. It has the exact same specs as the iPad 3's (and iPad 1's, for that matter).



Michael
 
powerslave12r said:
Using the ipad at 100% brightness while charging saw around 1% per 30 minutes charging rate.

I'm going to chalk that up to not having calibration. This is my first charge cycle. Let's see how that goes.
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You'd be surprised, at full brightness I was doing about 1% per hour, at lowest brightness I was doing 15% per hour. The screen REALLY suck up power.
 
Magnum Opus said:
You'd be surprised, at full brightness I was doing about 1% per hour, at lowest brightness I was doing 15% per hour. The screen REALLY suck up power.
Click to expand...

Yeah I threw that 1% per 30 minutes as a conservative estimate. I checked after that and it was doing something like what you mentioned.

This is all plugged into the wall with the correct adaptor and everything.

I plugged it in for charging 7 hours ago and with about 4 hours of playing around with the ipad at 100% and about an hour with 30-35% is stands at a total of 80% charged.

This is a little more than depressing. Shouldn't affect me most days, but I fear for that one day..

The other thing I don't like is having to sit with that short cord stretched out while it's charging all this time. I'm going to have to get an extension plug just for the iPad.
 
powerslave12r said:
Yeah I threw that 1% per 30 minutes as a conservative estimate. I checked after that and it was doing something like what you mentioned.

This is all plugged into the wall with the correct adaptor and everything.

I plugged it in for charging 7 hours ago and with about 4 hours of playing around with the ipad at 100% and about an hour with 30-35% is stands at a total of 80% charged.

This is a little more than depressing. Shouldn't affect me most days, but I fear for that one day..

The other thing I don't like is having to sit with that short cord stretched out while it's charging all this time. I'm going to have to get an extension plug just for the iPad.
Click to expand...

Yeah the short cord is my problem, I don't know if there's any solution to that other than an extension lead for the plug?
 
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I charged mine to 100%, then discharged it fully. It is currently at four hours plugged into wall, not in use, and it is at 60%. At this rate I'm thinking about eight hours to full charge without use. Not sure how much longer a full charge will take if the unit is in use.
 
I drained my down to 0%, and then hooked it up to the charger that came with it, and I"m at 11 hours and it's at 84%.

I did have a USB extension on it, but I took it of about 15 mins ago. Would that make a difference?

Robert
 
luftx said:
I drained my down to 0%, and then hooked it up to the charger that came with it, and I"m at 11 hours and it's at 84%.

I did have a USB extension on it, but I took it of about 15 mins ago. Would that make a difference?

Robert
Click to expand...

Ideally it shouldn't. The reason for the slow charge seems to be using the ipad while it's charging. It just can't keep up! Turning the brightness down seems to help.

Anyone with an iPad2 available want to do this test for science?

- Brightness up to 100%.
- Start charging.
- Use it for 30-60 mins.
- Notice the rate of charge.


Thanks if you do. :)
 
powerslave12r said:
Ideally it shouldn't. The reason for the slow charge seems to be using the ipad while it's charging. It just can't keep up! Turning the brightness down seems to help.

<SNIP>

Thanks if you do. :)
Click to expand...

I haven't been using it, and IT'S KILLING ME! it's up 8% in the 30 minutes since I removed the extension...
 
luftx said:
I drained my down to 0%, and then hooked it up to the charger that came with it, and I"m at 11 hours and it's at 84%.

I did have a USB extension on it, but I took it of about 15 mins ago. Would that make a difference?

Robert
Click to expand...

I have no idea on why or know for sure, but I can say I tried charging my iPad 2 through an extension cable last year and it was significantly slower.

If I have to charge the 3 more Ill have to find a longer cable so I can more easily use it while charging.
 
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