The truth about your iPad batteries.

mshahwan wrote:

This info is out there for people that are cabable of independant thought, obviously this post is not for you.

So people who disagree with you are incapable of independent thought? LOL!

You know, everyone, there is such a thing as The Internet. If you do searches for the life expectantcy of Lithium Ion or Lithium Polymer batteries, everyone here can find their answers.

There's a lot of info on this. We shouldn't be arguing or challenging someone's opinion when it's easy to get enough answers to form a consenus.

During my search, the general consensus, seems to be no matter how the battery is kept going or charged, expect between 2-3 years before the battery reaches 80% or a cell degrades to the point that it'll be time to replace it.

Apple's batteries are no different. I am still getting good battery life out of my original iPad and it's nearing the two year mark. I hope I can get another year or two out of it before I have to worry about replacing its battery.

If the replacement cost is $99, it's worth it and I will still be able to give my older iPad to someone else.

If there are quite a bit of new improvements to come in iPad3, I will be buying an iPad3 this year, anyhoo.

If your concern about keeping the batteries in your iDevices working well for as long as possible, here are a couple of links that should help.

This is true of both LiIon and LiPo batteries.

http://www.hackcollege.com/blog/2008/01/08/upping-your-batterys-life-expectancy. html

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batterie s

I don't know why I didn't just drop it, but IEEE 1725 does not really go into testing. It is more concerned with actual battery design and overall system design as the abstract says:

http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1624826

It mentions testing in a very limited way.

Every electronic device has software that shuts it down before the battery drains fully......thats how its able to tell you the battery needs to be charged, right before it shuts off.

I also dont know anybody who uses the device until the battery is fully drained....it really sets someone off who is writing that angry email or forum post and they are at a good spot and.....the battery goes dead. So people tend to keep thier devices charged anyhow.

Its been years since this battery has come out, years.....How is it you have this "new found" info on how to use a battery properly. FYI - a 2 yr old knows how to use a battery.....lick it...if it stings its good.

Some devices have to charge a few minutes before they can be used again and others come on right away when its plugged in.......thats software controlling that, not how much charge the battery has in it.

I read something about polar reversal i think it was or something like that......when was the last time this issue happened to a major company and a battery recall was not done?

Its nice that you care but any company out there that uses batteries in thier devices have done thier homework otherwise they would not use those batteries. Its not good for productivity or bottom line.

mshahwan wrote:

I like my iPad. What I don't like is the misguided statements made by Apple website about the recommended practices on how to prolong your battery life. ........

#1 " the iPad batteries are rated for 1000 Full charge/discharge cycles before battery capacity is reduced to 80%. ". This statement is 100% false.........

#2 "you fully charge and drain your iPad batteries once a month to calibrate the battery meter". Again false statement. ........

Hope this helps.

Yeah, right. Meanwhile, know what it totally absent from these forums? All of the owners of the original iPads which, in case you were wondering, had about the same battery specs and the same Apple guidance on how to use them, writing in with their cries of anguish as their battery performance drops off or they die completely. Certainly they must all be about dead by now?

Mine, for example. About 2 years old now. Zero perceived change in charge times or the length of time I use it every day. None. Have I exceeded your claimed 500 charge cycle maximums? You bet I have, and so have most others still using their originals. How to explain this? Who are we to believe, some opportunistic schmo posting in a forum or our own lying eyes?

As for the battery level re-setting, not all do that. I do, I have from the time that I first came across that ..... what can I say? My metering seems to stay correct and the guaranteed horrible effects from routinely doing that seem not to have happened to me. If you're thinking that it's only Apple who recommend that procedure for some li-poly batteries then you just haven't done your homework as well as you claim to have done.

Did your post help? Oh sure ... folks can believe either you or Apple. Believing you means Apple has intentionally lied about a critical aspect of their systems' performance specs and no one, not one person, until now .... until you .... has noticed this or called them out on it.

Next on the agenda: The Inevitable Class-Action Lawsuit. I can hardly wait.

Michael Morgan1 wrote:

mshahwan wrote:

I like my iPad. What I don't like is the misguided statements made by Apple website about the recommended practices on how to prolong your battery life. ........

#1 " the iPad batteries are rated for 1000 Full charge/discharge cycles before battery capacity is reduced to 80%. ". This statement is 100% false.........

#2 "you fully charge and drain your iPad batteries once a month to calibrate the battery meter". Again false statement. ........

Hope this helps.

Yeah, right. Meanwhile, know what it totally absent from these forums? All of the owners of the original iPads which, in case you were wondering, had about the same battery specs and the same Apple guidance on how to use them, writing in with their cries of anguish as their battery performance drops off or they die completely. Certainly they must all be about dead by now?

Mine, for example. About 2 years old now. Zero perceived change in charge times or the length of time I use it every day. None. Have I exceeded your claimed 500 charge cycle maximums? You bet I have, and so have most others still using their originals. How to explain this? Who are we to believe, some opportunistic schmo posting in a forum or our own lying eyes?

As for the battery level re-setting, not all do that. I do, I have from the time that I first came across that ..... what can I say? My metering seems to stay correct and the guaranteed horrible effects from routinely doing that seem not to have happened to me. If you're thinking that it's only Apple who recommend that procedure for some li-poly batteries then you just haven't done your homework as well as you claim to have done.

Did your post help? Oh sure ... folks can believe either you or Apple. Believing you means Apple has intentionally lied about a critical aspect of their systems' performance specs and no one, not one person, until now .... until you .... has noticed this or called them out on it.

Next on the agenda: The Inevitable Class-Action Lawsuit. I can hardly wait.

You don't understand. The poster obviously knows much more about Apple products than the engineers that designed those products. You're just picking on him because you think he's an idiot. (I do, too.)

Philly_Phan wrote:

You don't understand. The poster obviously knows much more about Apple products than the engineers that designed those products. You're just picking on him because you think he's an idiot. (I do, too.)

And there was I thinking that I was alone in that opinion 😀

Csound1 wrote:

Philly_Phan wrote:

You don't understand. The poster obviously knows much more about Apple products than the engineers that designed those products. You're just picking on him because you think he's an idiot. (I do, too.)

And there was I thinking that I was alone in that opinion 😀

You forgot pompous, self-agrandizing, and annoying. But keeping score? 😁

mshahwan wrote:

Oh boy, The most predictable of all human responses is denial, all this becuase i told you ur beloved ipad batteries might not last as long as you'd like them to, I'd hate to see your response if i told you god doesn't exist.

I think I'm arrogant

snip

I totally agree with your assesment of yourself.

None of which changes the fact that - based on your posts - any reasonable person would come to the conclusion that you are pompous, self-agrandizing, and annoying. And probably an idiot.

What's your point in continuing to post on the subject. Regardless of your claims of authority on the subject, you have zero credibility on this forum (see statement above). You are nothing more than a troll.

If you would like to be taken seriously, you can provide some evidence of your background and expertise, but I already know that isn't going happen.

MichelPM gave a couple links that were very helpful. From them I learned that the original poster is repeating some general knowledge that was also put forth in the batteryuniversity.com article. But, the article goes on to say how those general metrics on battery life can be improved.

So, I'm inclined to agree that the original poster is quite confident in his information, but I also agree that Apple has done what they can to improve performance beyond nominal expectations.

Just to add another data point to the public knowledge, I've had my iPad since the day they first came out. I've not been especially conscientious about maintaining battery charge levels and all that. I've been careful not to store my iPad in a hot car, and only rarely has it discharged below 15% (on the battery meter). It is JUST NOW starting to show signs of fatigue, which is why I'm even reading this thread (that and for the entertainment value!).

After reading the articles posted by MichelPM, my only regret is that I could have and should have kept the discharge cycles even shallower than I did. I plan to replace the battery as soon as the capacity of the battery gets to the level of inconvenient.

Closing comment: I buy Apple products cuz they just work and they work REALLY well. So, I don't think I'm going to spend much time trying to figure out where they went wrong. If I were of that mindset, I'd be much happier as a Windows afficianado. :-)

I would imagine this article may satisfy you since it is a technical and engineering type site.

http://batteryuniversity.com/learn/article/battery_calibration

And this one too,

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batterie s

Thank you all for your input!

Gar