Summary: Apple didn’t want to show the iPad battery constantly fluctuating between 90 and 100 percent as the battery goes through its normal trickle charge/discharge cycle to keep it topped off.
Yesterday I noted that if you unplug your iPad 3 as soon as the iPad 2 Foldable Leather Case Built-in Bluetooth Keyboard + Battery indicator says “100%” you’re actually missing out on as much as 1.2 hours (10 percent) of additional run time. But Apple says that this is the expected behavior and that the iPad battery is designed to work this way.
Fried explains it this way:
Apple does, in fact, display the iPad (and iPhone and iPod Touch) as 100 percent charged just before a device reaches a completely charged state. At that point, it will continue charging to 100 percent, then discharge a bit and charge back up to 100 percent, repeating that process until the device is unplugged.Soneira, President of DisplayMate Technologies Corporation, first discovered that the iPad 3 experienced a net loss of 1.2 hours (around 10 percent) of Folding Solar Panel Charger with 45Wh Solar battery run time if unplugged as soon as its battery indicator displayed 100%. His essential point was that if the iPad 3 is fully charged (i.e. overnight) it will run 11.6 hours, which is 1.2 hours longer than if it is only charged to 100% (10.4 hours).
Apple VP Michael Tchao tells AllThingsD that Apple decided not to keep changing the battery status “so as not to distract or confuse users,” explaining:
That circuitry is designed so you can keep your device plugged in as long as you would like, It’s a great feature that’s always been in iOS.So there you have it. The iPad battery displays “100%” a little prematurely because Apple didn’t think that it would be wise to show the lenovo thinkpad l512 battery constantly fluctuating between 90 and 100 percent as the battery goes through its normal trickle charge/discharge cycle to keep it topped off. Makes sense to me.
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Mine works fine
How many articles are going to be written about this very James Quinn 1 day ago
"smallish" issue!?! Is Apple so good at what it does that ever none events that might point to a very slight problem become (what is it now) 6 articles worth on ZDNet? If so I guess that's kind of good news:)
Pagan jim
Pagan jim
All that article did was rehash half of Jason's first article on the Dell XPS M1210 AC Adapter battery issue... but if you want to accept that as fact and be wrong yet again go for it.
Don't you get tired of being wrong all the time and displaying that fact every single time you make a post here?
Don't you get tired of being wrong all the time and displaying that fact every single time you make a post here?
You have a weak grasp on what the concept of "proven" means
"It has been proven..."-The Linux Geek
"Proven" does not mean what you think it means. For one thing, it involves "proof" not just unfounded supposition.
"Proven" does not mean what you think it means. For one thing, it involves "proof" not just unfounded supposition.
The iPad's battery works the same as every iOS dell inspiron 9400 ac adapter battery ever has. The iPad is no warmer than other comparable tablets and cooler than most notebooks. LTE eats up data on your iPad...exactly the same as it does with every other LTE device.
Talk about much ado about nothing.
Talk about much ado about nothing.
You're STILL talking about the inspiron 1545 Battery. I wish one of the technology giants would release a phone or something so you'd quit your incessant babbling about the stupid iPad 3 battery issue. Which, as many of your posters on the previous stories noted, was a non-issue from the beginning based on standard battery behaviors...
Put down the stick and walk away from the horse Jason...
Put down the stick and walk away from the horse Jason...
when you consider the heat and Acer aspire 5552 battery tests run on all the other tablets. Could someone point me to the articles about the array of Android tablets so we can see what happens to those tablets after they show 100%?
I can't seem to find them.
I can't seem to find them.
Look at those results. Apple said up to 10hrs and 90% gets you 10.4. I mean, what bandits! They should have, instead, said up to 11 hr and show the charge and discharge cycles because when people see the hp pavilion tx1000 battery display constant fluctuate between 90% to 100% *surely* we wouldn't see stories about THAT anywhere. "Apple iPad constants charges, increase home power usage .000003%. People outraged!"
have an animated icon that either replaces the charge indicator, or cycles the bars on the existing one.
That way you can tell if it is charging, or if the power connector is not plugged in correctly, or if the PSU is actually plugged into the wall.
Modern devices that use Lithium cells do indeed all have this feature, as it is extremely bad for this type of cell to be overcharged or completely discharged. Overcharging a Radio Control Lithium pack is extremely dangerous as those things can deliver double figures in Watts, and an internal short can get hot enough to cause a fire. Discharging them completely can cause these shorts as crystals grow in the Polymer layer and are repeatedly dissolved by the charging action, weakening the insulation - so the most efficient use of the cell happens above 20%, which is when the device says its empty, even though it is not.
iPad batteries dont hold enough charge to do serious damage, however their life is also shortened by that kind of abuse, hence the aspire one 10.1 battery management system.
Most people are now familiar with the fact that modern batteries need to be treated with a little consideration, and watch their charge cycles accordingly. Its just curious to me that Apple have decided to try and hide this standard behaviour because it might 'confuse' users.
This smacks of treating customers as if they were stupid...
That way you can tell if it is charging, or if the power connector is not plugged in correctly, or if the PSU is actually plugged into the wall.
Modern devices that use Lithium cells do indeed all have this feature, as it is extremely bad for this type of cell to be overcharged or completely discharged. Overcharging a Radio Control Lithium pack is extremely dangerous as those things can deliver double figures in Watts, and an internal short can get hot enough to cause a fire. Discharging them completely can cause these shorts as crystals grow in the Polymer layer and are repeatedly dissolved by the charging action, weakening the insulation - so the most efficient use of the cell happens above 20%, which is when the device says its empty, even though it is not.
iPad batteries dont hold enough charge to do serious damage, however their life is also shortened by that kind of abuse, hence the aspire one 10.1 battery management system.
Most people are now familiar with the fact that modern batteries need to be treated with a little consideration, and watch their charge cycles accordingly. Its just curious to me that Apple have decided to try and hide this standard behaviour because it might 'confuse' users.
This smacks of treating customers as if they were stupid...
Marcelbrown 12 hrs ago
As a professional technology consultant that has worked with all sorts of clients, it will amaze you what will confuse people. I still run into people that are confused by two button mice! (which is why Apple still sets the default to single button operation on Macs, but I digress)
From a usability standpoint, Apple did exactly the right thing. Why add a ibm thinkpad r50p battery charge indicator that may not be immediately obvious what it means? Especially when most users could care less? If the charge indicator shows 100% and you get the specified battery life, why worry about the technical details of battery management? It's nothing users can control or even need to worry about. It's these fine little details that make Apple products the most usable in the world. An engineer might have thought that a different pa3356u-1brs battery indicator would be a great idea, but most people aren't engineers. Just imagine from a technical support standpoint the number of calls that would have been generated by this subtle little change. "My battery charge indicator is freaking out!" This is just another example of Old World vs New World of Technology thinking and why Apple is the company it is today.
From a usability standpoint, Apple did exactly the right thing. Why add a ibm thinkpad r50p battery charge indicator that may not be immediately obvious what it means? Especially when most users could care less? If the charge indicator shows 100% and you get the specified battery life, why worry about the technical details of battery management? It's nothing users can control or even need to worry about. It's these fine little details that make Apple products the most usable in the world. An engineer might have thought that a different pa3356u-1brs battery indicator would be a great idea, but most people aren't engineers. Just imagine from a technical support standpoint the number of calls that would have been generated by this subtle little change. "My battery charge indicator is freaking out!" This is just another example of Old World vs New World of Technology thinking and why Apple is the company it is today.
If it were designed well, it wouldnt generate tech support calls
Thats the whole point of good design, its clear and simple. Hiding the process has only generated a whole lot more trouble than fixing the problem would have in any case. Its just curious, Apple pride themselves on design, and thats not the best design I've ever seen.
And I still think Apple using the excuse that the users wouldnt understand is a bit insulting, given the capabilities of the device and who it is aimed at...
And I still think Apple using the excuse that the users wouldnt understand is a bit insulting, given the capabilities of the device and who it is aimed at...
Really? The battery charge fluctuates by 10%? That's more than an hour's worth of battery charge with the iPad actively in use, and way more than that if it's on standby... I see that as a design flow, they could have made the full-charge window smaller than that! The Acer Aspire 5235 Battery can't be fluctuating by 10%, simply nonsense! Apple is again trying to cover up...
I'm not an Apple hater at all... In fact I own an iMac and I like their other range of products including the iPad, but I think Apple is constantly taking advantage of the lack of knowledge in the average user... Yet, Apple is a business, and that's how you do business!
I'm not an Apple hater at all... In fact I own an iMac and I like their other range of products including the iPad, but I think Apple is constantly taking advantage of the lack of knowledge in the average user... Yet, Apple is a business, and that's how you do business!
On My New iPad, The Display Does Not Work As Expected Nor As Before On Previous Models
The New iPad battery level display certainly does NOT work as expected on mine. Plugged into the New iPad wall charger, when it reaches 100% the display switches to "Not Charging" next to the grey FUJIFILM FinePix Z35 Charger battery icon WITHOUT the black plug icon inside it. Very disconcerting. No way to know if the charging has stopped or not. Apple tech support has never heard of this indication before unless plugged into a computer's low power USB port. Michael Tchao needs to know about this bogus display info ASAP. It's got me wondering what's going on inside my New iPad's battery charging system.
When my New Ipad reaches 0% it's dead and I need to charge it. That's pretty much the bottom line for me. I'm more concerned with when they're going to put the rest of SIRI in the Ipad 3 (yes, I said Ipad 3). Don't make me wait until the next IOS comes out, send a patch first.
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