Connect with us

Palm IIIXE Eats Batteries

Discussion in 'Electronic Repair' started by Isildur's Bane, Aug 21, 2004.

Scroll to continue with content
  1. I thought I would post this because my ancient Palm IIIXE is driving
    me nuts. I've tried regular batts, NiMH batts, and even rechargable
    alkalines. They all last *1* friggin day before needing a recharge. I
    can't detect a great amount of current using my DMM ammeter. But I
    know it's draining somehow. I don't use the damn thing much. 5 minutes
    per day. What the hell is wrong with it???

    IB
     
  2. Jerry G.

    Jerry G. Guest

    How many milliamps is it pulling, when you take the measurement?

    Take the reading when it is turned on, and take another when it is turned
    on.

    If you are using "AA" type NiMH batteries, the should be good for at least
    500 to 800 mA/Hr, depending on the type. From there you should be able to
    work out the time that it should be workable.

    If the batteries are wearing out too fast for the current draw, it is
    possible that the batteries you have are not properly holding their charge.
    I generally see this with chargeable batteries after they are more than 2 to
    3 years old. If you recently bought them, maybe one or more of the batteries
    are defective.

    --

    Jerry G.
    ==========================


    I thought I would post this because my ancient Palm IIIXE is driving
    me nuts. I've tried regular batts, NiMH batts, and even rechargable
    alkalines. They all last *1* friggin day before needing a recharge. I
    can't detect a great amount of current using my DMM ammeter. But I
    know it's draining somehow. I don't use the damn thing much. 5 minutes
    per day. What the hell is wrong with it???

    IB
     
  3. Michael

    Michael Guest

    This is a known problem, and Palm used to exchange units that did it, no
    questions asked. Most likely, the backup capacitor (one of those
    high-capacity "supercaps") is leaky.

    Also, be aware that Palms turn themselves on for a few moments once per
    minute to refresh data in some way. You don't see it happening, but it
    does. I suppose some software issue could be keeping it on, thus
    draining the battery, but most likely it's leakage. Try measuring the
    current drawn in the off state. It should be VERY low (I'd guess tens or
    hundreds of microamps), except for that momentary turn on every minute.
    If you're seeing a mil or two, or more, there's your answer: leakage.
    Also, try simply removing the supercap from the board and seeing if that
    makes it go away.

    Michael
     
  4. Alex Bird

    Alex Bird Guest

    The new ones are available in something like 2300 mAh. The oldest
    NiMH I have (about 5 years) are 1300 mAh.

    Alex
     
  5. jakdedert

    jakdedert Guest

    Parts--including an entire motherboard--might still be available from
    gethightech.com. If so, they will probably be cheap....

    jak
     
  6. | > If you are using "AA" type NiMH batteries,

    IMHO the IIIxe uses AAA Type cells and for using it with NiMH you have
    to load Battery Hack first.

    MArtin
     
  7. Thanks for the information. I'll have to try removing the "supercap"
    and see if there is any difference. I don't care about losing data -
    it's all backed up.

    -IB
     
  8. ~

    ~ Guest

    if you have the backlight enabled on the display the backlights drain
    batteries that is why digital photographers will stock up on batteries
    for their cameras.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-