cf-ax3 why does builtin battery gets drained before removable battery ??

Discussion in 'Panasonic' started by pierro78, Dec 20, 2018.

  1. pierro78

    pierro78 Notebook Enthusiast

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    ( there s a nice thread for the ax2/ax3 here http://forum.notebookreview.com/threads/panasonic-cf-ax2.690396/ but it seems to be closed so I open a new one here)

    just bought a cf-ax3 (windows 10) off ebay and I am wondering : why does the builtin battery ( #2 ) gets drained before the removable battery ( #1 ) ???
    (it s not logical as when the builtin battery is discharged I can no longer change the removable battery "on the fly")

    thanks folks for your help !!

    (ps : also noticed a wiki for the AX3 (and other panasonic laptops) here : https://panasonic.wikia.com/wiki/CF-AX3 )
     
  2. pierro78

    pierro78 Notebook Enthusiast

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    update : I have updated the bios and Intel firmware (not sure what this intel firmware is ?) and now the draining behaviour seems good in windows for the time I ve been testing it ( I ve been using my AX3 more with Archlinux Anarchy XFCE , it seems to drain battery #1 most of the time but sometimes it temporarily drains battery #2 for a very short time and then the battery life indicator becomes a mess ... I then need to click on the battery icon to get a better idea of what battery life is left on the 2 batteries ...)
     
    Last edited: Dec 23, 2018
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  3. pierro78

    pierro78 Notebook Enthusiast

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    update2 : I realized that my battery #1 is not always recharging when it should so there might be some kind of bad electrical contact issue (sorry for my bad english) that may explain my problems ...
     
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  4. Shawn

    Shawn Crackpot Search Ninja and Options Whore

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    Just to let you know someone is reading your posts.
     
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  5. BaRRmaley

    BaRRmaley Notebook Deity

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    cf-ax3 is something like multicolored unicorn :))
     
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  6. pierro78

    pierro78 Notebook Enthusiast

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    yeah it s a nice machine with its nice touchscreen IPS display and its ssd makes it kind of fast :) ... I got the 8GB/256GB version for quite cheap on ebay (219E+20E shipping - it s in OK condition but not perfect) ...

    the issues are that the battery life doesn t seem as good as advertised (maybe 5-6 hours under linux/windows ... maybe my windows setup is missing sthg ... my battery capacities are about 80% from originals, the issue being that a battery replacement is kind of expensive : about 70-80$ on aliexpress) and sometimes the fan is a little bit noisy (less on linux where there are less processes being fired randomly in the background)

    but I saved money by buying it instead of an RZ4 ;) (I don t know if the battery life on the RZ4 is as good as advertised (14H) ? - I've also just bought an old N10 and its battery life is good, the battery indicator says 12hours sometimes and I think it s probably more than 7 hours IRL ...)
     
    Last edited: Dec 24, 2018
  7. BaRRmaley

    BaRRmaley Notebook Deity

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    I guess you have Panasonic Power plan extension utility (Windows) app installed. There is a switch between fast and slow charging (I presume slow = also old Eco mode, when battery is being charged to 80% max) and also a switch between fast and slow fan rotation speed (affects CPU speed too).
    And battery recalibration (F9 key during post) is recommended every ~6 months.
     
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  8. pierro78

    pierro78 Notebook Enthusiast

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    wow awesome tips, thank you @BaRRmaley !! :)

    I installed Panasonic Power plan extension utility and selected the Panasonic Power Saving mode
    Also slowed down the fan
    (I guess the ebay seller just made a quick windows install and he probably didn t know about this utility - neither do I, I must confess ... )
    I didn t select the ECO mode as maybe I ll need my batteries at full capacity ...

    I ll try to recalibrate the batteries one of these nights as it says it takes about 4 hours ...

    PS : under Windows the touchscreen doesn t seem to be as responsive as under Linux when scrolling ... sometimes I feel some kind of slowdown when "touch-scrolling" but it seems to be fine under linux ...

    PS2 : also modifying the extended settings from the Panasonic Power plan extension utility menu doesn t bring up any window :(
     
    Last edited: Dec 24, 2018
  9. User32

    User32 Notebook Deity

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    Battery recalibration takes a long time indeed, especially on models with hi-cap batteries.
     
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  10. BaRRmaley

    BaRRmaley Notebook Deity

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    nothing interesting there
    Try to install Panasonic Dashboard also and check if there is a switch between touch and touch water modes.
     
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