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2418 Views 9 Replies Latest reply: Nov 20, 2009 3:25 PM by reppans
Currently Being ModeratedNov 19, 2009 4:00 PM (in response to reppans)
Anyone got any other ideas?
Apple have: http://www.apple.com/batteries/iphone.html
Currently Being ModeratedNov 19, 2009 5:04 PM (in response to Julian Wright)Other than the standard Apple suggestions, of course.
BTW, I find it interesting that Apple notes the heat problem with Li-ions, yet fails to mention the full charge problems.MBP 2.16, Mac OS X (10.4.8)
Currently Being ModeratedNov 19, 2009 6:29 PM (in response to reppans)Probably because they do not believe the full charge problem exists. When the iPhone is fully charged then the charging cycle is stopped, so how would this damage the battery?MacPro Dual Core 2.66 Ghz, MacBook Pro 15", iPhone 3G, Mac OS X (10.6.2), AEXs, Red 2G & 5G Nano, Red Shuffle, 160 GB Classic, White 60GB 5G, Apple TV
Currently Being ModeratedNov 19, 2009 7:54 PM (in response to deggie)Read the page/chart on the link I attached. This is not a question of overcharging the battery, this is about the length of time a Li-ion holds a full charge. Li-ions degrade much more quickly if they 1) are kept at 100% charge, 2) are subject to high temps, and 3) are run down to 0% frequently (well, in addition to normal charge cycle limitations and the passage of time, of course).MBP 2.16, Mac OS X (10.4.8)
Currently Being ModeratedNov 19, 2009 8:29 PM (in response to reppans)I think you are wasting your time. When iPhone is at 100% it stops charging.
Currently Being ModeratedNov 20, 2009 5:19 AM (in response to Ziatron)I know it stops charging when it hits 100%
My point is, as a user, leaving your phone in a fully charged state (assume unplugged) is worse than leaving it in a 100 degree car. If you plug it in before you go to sleep, it will sit at a 100% charge all night. It is by far better to sit all night at 40% charge, and then charge it an hour before you intend to use the phone. You can do this by using a light timer without any change to your habits.
Guess it's your battery folks... If you dont want to spend the time to understand what is good and bad for a Li-ion, then you'll just kill it sooner than necessary. Apple would like that.MBP 2.16, Mac OS X (10.4.8)
Currently Being ModeratedNov 20, 2009 5:43 AM (in response to reppans)I think you are talking trivialities here. That chart refers to long term storage, not short term situations like overnight. Second, while Isidor Buchmann knows his stuff no doubt, that web pave is 4-5 years old, and current Li-polymer batteries have made pretty big advances in just the last couple of years. And third, since for most iPhone users, the battery is going to have an effective life span of 1-2 years (400-500 full equivalent charge cycles) at most, the slight loss in capacity directly attributable to sitting charged over night is hardly worth fussing about.
I just see it as way to much ado about nothing. There are far too many legitimate things to worry about every day - this is just not one of them.
P.S. And I do leave mine plugged in overnight, in a dock, since it is my alarm clock and quite honestly, I don't want to have to remember to plug it in come morning when I'm running about trying to get out the door to get to work. I just want to be able to grap it at anytime and know it is fully charged and good to go. I plug it in when I get to my office - I plug it in whenever convenient, regardless of charge state.2.53GHz MBPro unibody, 2.8GHz 8Core Mac Pro 10GB RAM, 1TB HD, 32GB iPhone 3GS, Mac OS X (10.6.2)
Currently Being ModeratedNov 20, 2009 6:33 AM (in response to reppans)I think the reference is more along the lines of laptop batteries that are in laptops and docked for days, weeks, and months. Apple's recommendation for laptop batteries is slightly different and talks about NOT leaving them plugged in all the time.
My iphone is 18 months old and the battery is as strong as it was when i purchased it. I charge it every other day, and it stays plugged in at night.
Warning people to not plug a phone in overnight is silly. The same could be said for laptops and any other charged device.
Also, the guidelines in the article you reference make no mention of not charging overnight. Now, if someone kept their phone docked to a charging port 24/7 (like a laptop) then I feel the chart is accurate regarding aging of LiON batteries.HAL, Other OS, The size of a spaceship
Currently Being ModeratedNov 20, 2009 3:25 PM (in response to tokatta)Ok from the last 2 posters.... Fair enough and agree the charging cycles may be more of an issue than the full charge. Issued dropped/resolved whatever.MBP 2.16, Mac OS X (10.4.8)