6 Replies Latest reply: Jun 12, 2008 9:16 AM by Allan Jones
BFA Level 1 Level 1
I keep seeing posts about the date going back to 1969 so I'm wondering what timeframe am I looking at to replace the "watch" battery. I bought my PB back in '04. Thanks.

PowerBook G4 17", Mac OS X (10.5.3)
Solved by a brody on Jun 10, 2008 7:39 AM Solved
Yep, 4 years is about right.It really depends on usage. Some don't see it come up till 5 years, but many do see it in their 4th year.
Reply by Allan Jones on Jun 10, 2008 10:06 AM Helpful
Until recently, I thought the PB backup batteries simply ran down. While visiting the Apple Store in Portland OR a couple of weeks ago, I mentioned this to one of the techs and he said the PB battery was rechargeable like the ones in the older G3 PowerBooks.I was given a 2003-vintage PB17 recently that had been in storage (off power) for about six months. The backup would not support the time needed to change from battery to corded operation when running down the main battery. After having the PB on wall power for several weeks, I tried it again and the backup battery was able to allow the power switchover without the computer shutting down completely.Based on a sample size of n=1, the backup could be rechargeable. My big grip is that the batteries are hard to find and darned expensive. Too many offered online are sold as "used." If it's not rechargeable, what's the point of a used battery?Even rechargeable batteries have a finite lifespan so, if shopping for one online, get assurances that it is not used. I still have concerns about "new" batteries like this. If Apple has not made new parts recently, then those from inventory could be almost as old as the one you're replacing.
Reply by a brody on Jun 11, 2008 10:19 AM Helpful
Not directly. All I know is this article about backup batteries:http://docs.info.apple.com/article.html?artnum=86181

All replies

  • a brody Level 9 Level 9
    expertise.classicmacos
    Classic Mac OS
    Yep, 4 years is about right.

    It really depends on usage. Some don't see it come up till 5 years, but many do see it in their 4th year.
  • Allan Jones Level 7 Level 7
    expertise.ipad
    iPad
    Until recently, I thought the PB backup batteries simply ran down. While visiting the Apple Store in Portland OR a couple of weeks ago, I mentioned this to one of the techs and he said the PB battery was rechargeable like the ones in the older G3 PowerBooks.

    I was given a 2003-vintage PB17 recently that had been in storage (off power) for about six months. The backup would not support the time needed to change from battery to corded operation when running down the main battery. After having the PB on wall power for several weeks, I tried it again and the backup battery was able to allow the power switchover without the computer shutting down completely.

    Based on a sample size of n=1, the backup could be rechargeable. My big grip is that the batteries are hard to find and darned expensive. Too many offered online are sold as "used." If it's not rechargeable, what's the point of a used battery?

    Even rechargeable batteries have a finite lifespan so, if shopping for one online, get assurances that it is not used. I still have concerns about "new" batteries like this. If Apple has not made new parts recently, then those from inventory could be almost as old as the one you're replacing.
  • a brody Level 9 Level 9
    expertise.classicmacos
    Classic Mac OS
    Even unused batteries have a certain shelf life that depend entirely on the environmental conditions they are stored in.
  • Allan Jones Level 7 Level 7
    expertise.ipad
    iPad
    Even unused batteries have a certain shelf life that depend entirely on the environmental conditions they are stored in.


    Yup. I keep my stash of 3.6V PRAM batteries in a FoodSaver vacuum bag in the veggie drawer of the frig.

    AB, do you have any info on whether the PBook backup batteries are rechargeable or just regular Li batteries?
  • a brody Level 9 Level 9
    expertise.classicmacos
    Classic Mac OS
    Not directly. All I know is this article about backup batteries:

    http://docs.info.apple.com/article.html?artnum=86181
  • Allan Jones Level 7 Level 7
    expertise.ipad
    iPad
    I sent a feedback note suggesting that the article include info on which are rechargeable.