2 Replies Latest reply: Oct 8, 2006 6:30 PM by mrtotes
Ruth Bygrave Level 1 (20 points)
Did the ibook clamshell have no protection against overcharging? I have a clamshell ibook with a battery bought in late June. Luckily because the battery is nearly new it's currently being returned under warranty, but I'd like to ask this question because I want to know for the next battery when it gets returned.

I've never noticed people being up in arms about their iPods overcharging, which you'd think would be a serious issue because of the number of people forgetting and leaving the **** thing in their docks/speakers/USB overnight. I know I've occasionally left my iPod attached to something that charges it overnight, and I've never had an issue. The iPod is meant to have protection and not overcharge.

My boyfriend was quite surprised when I said, "I wonder if I blew the battery by leaving it connected too long'. He thinks that modern electronics should protect against this as a matter of course.

Am not sure if it blew because a) it's a cheap yum cha item from Hong Kong, b) clamshells are so old they do not have this protection while modern kit does or c) will any modern lith battery device eventually blow the battery if left on for longer than overnight?

Have heard different information about lith batteries. Some people say, keep an eye on them, they will eventually overcharge if they're left hooked up too long. Other people say, Apple &c assume you will eventually make a mistake and leave it on charge too long, so they build in failsafes.

What d'you think?

Mac Mini (PPC), Mac OS X (10.4.7)
  • donny Level 6 (10,310 points)
    I've never heard anything like that. I know people who always leave their laptops plugged in. No problems. Same with the iPod.
  • mrtotes Level 6 (11,825 points)
    Yes you mustn't overcharge these Li-Ion batteries. However the Clamshell and iPod batteries do have the appropriate electronics built-in to protect against over-charging.


    Obviously some newer Apple laptops using Sony batteries have problems.


    If you've buying a cheapy battery from the Far East your guess is as good as mine about the quality of the control electronics.