iBook battery

Discussion in 'PowerPC Macs' started by misterman8, Aug 7, 2005.

  1. misterman8 macrumors member

    Jul 18, 2005
    I just ordered an iBook and hope to be receiveing it next week (we'll see if FedEx can get the act together). I bought a laptop when I went to college 7 years ago. My girlfriend bought one when she went to school 5 years ago. We both had the same problem, the battery developed "memory problems." They ended up not holding a charge and effectively lost their protability. I was wondering if they have gotten batteries figured out in the intervening years since I have owned one, or am I going to have to watch how much and how long it is plugged in? This one needs to be protable and able to go hours without an outlet. Thanks...
  2. joecool85 macrumors 65816


    Mar 9, 2005
    In short, yes. New 'books have li-ion batteries which don't work the same way. You can charge them whenever and won't have memory problems like the old ni-cad or ni-mh batteries.
  3. misterman8 thread starter macrumors member

    Jul 18, 2005
    Sweet. Thanks, I just thought of that problem today, and wanted to make sure that I wasn't going to be stuck scrounging for outlets again.
  4. mkrishnan Moderator emeritus


    Jan 9, 2004
    Grand Rapids, MI, USA
    Apple does recommend "conditioning" the battery -- running it through a full discharge / recharge cycle -- once monthly (link), but as said above, the memory effect is greatly reduced / absent in modern notebook batteries (not an Apple specific thing, but by virtue of the physics of Li-Ion batteries). Do bear in mind, though, that a Li-Ion battery will probably be good for about 300-350 charge cycles.... it still doesn't have an infinite life. :eek:
  5. chucknorris macrumors 6502a


    Jun 28, 2005
    Moscow, ID (No Kremlin here!)
    Don't make it seem like li-ion batteries will never stop holding a charge. At some point even the latest batteries will run out of juice.

    It's best to follow battery conditioning procedures, and just hope to get as many charge cycles out of the thing as possible.

    There was a very interesting article in Popular Science a few months ago about how little battery technology has progressed when compared to computing technology. If I remember right, batteries have doubled in capacity over the past 15 or so years whilst computers have improved exponentially. It can even be said that batteries are one of the chief limiting factors for portable electronics development.

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