29433 Views 5 Replies Latest reply: Dec 5, 2008 1:55 PM by DanH
It will use power from the AC, not the battery,
There are several posts lately suggesting that listening to the ipod (one of the lowest battery using feature of the phone) seems to prevent recharging under 2.2.
Such as: http://discussions.apple.com/message.jspa?messageID=8496642#8574853
Sometimes these posts are in other threads and you don't know for sure what is going on.
I would agree that the wall charger, delivering a full amp, ought to be able to drive everything this phone can do. But there are reports that some users have problems with this under 2.2.
There are two issues here. A cycle is the EQUIVALENT of one complete use of the battery from fully charged to depleted. But it can take place over multiple uses and charges. There is no way to avoid using cycles (or portions of them) other than leaving the phone plugged in all the time. Which brings us to issue two:
The worst thing you can do to your battery (other than letting it get very hot) is to leave it plugged in all the time. This is not because it will overcharge. As others have pointed out, the phone is smart enough to prevent overcharging. But li-ion polymer batteries like to get some "exercise" to say fresh. Apple recommends the equivalent of at least one cycle per month. If it's plugged in constantly, it will not get enough exercise and its capacity will diminish.