Question about Panasonic CF18DJAMXKM Notebook

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CF 29 battery charging problem

I have a panasonic CF 29 with the media bay battery installed. The main battery will only charge to 99%. I bought a replacement, Panasonic brand, battery and it too, will only charge to 99%. Tried the battery recalibration but it will not charge beyond the 99% threshold. The media bay battery will charge only when the main battery is removed. What can be causing this problem and what do I do to fix it? I have updated the BIOS to the most current version and along with all drivers. I am at wits end! ! !

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  • brandonsflht Sep 16, 2009

    Me thinks that you did not understand the problem, my friend! the battery will not charge beyond 99% and therefore will not charge the media bay battery!

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  • Panasonic Master
  • 7,993 Answers

Hello,

Methinks you are looking for a problem where there is none. The capacity of a battery to hold charge decreases with its usage. !00% or 99% I see no difference. 99% is not a threshold, it is a whole (IMHO).
Start to worry only if they fail to keep the charge for a significant stetch of time (a few hours, depending on power usage).

Hope it reconciles you with the shortcomings of your two batteries.


Posted on Sep 06, 2009

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