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Thread: daru3 battery charged but laptop shuts down when AC adapter is removed

  1. #1
    Join Date
    Oct 2008
    Beans
    19

    daru3 battery charged but laptop shuts down when AC adapter is removed

    Hi guys, my daru3 has been cruising along until a recent power supply problem. I normally get about 2 hours to a charge but recently, after using up most of the battery power, shutting down, and recharging, the laptop stopped powering up unless the ac adapter was plugged in. If the AC adapter is removed, the laptop shuts down immediately.

    Here's where the system says my battery is:
    Code:
    user:~$ cat /proc/acpi/battery/BAT0/*
    alarm:                   unsupported
    present:                 yes
    design capacity:         2400 mAh
    last full capacity:      1595 mAh
    battery technology:      rechargeable
    design voltage:          14800 mV
    design capacity warning: 0 mAh
    design capacity low:     0 mAh
    cycle count:		  0
    capacity granularity 1:  64 mAh
    capacity granularity 2:  64 mAh
    model number:            M720T/M730T
    serial number:            
    battery type:            LION
    OEM info:                Clevo Co.
    present:                 yes
    capacity state:          ok
    charging state:          charged
    present rate:            unknown
    remaining capacity:      1595 mAh
    present voltage:         14800 mV
    After looking here and here it sounds as if there could be a hardware problem in the battery or in the AC adapter.

    Has anyone else had this problem? Any ideas of what I could do to look into it further?

  2. #2
    Join Date
    Oct 2007
    Location
    Aurora, CO
    Beans
    2,563
    Distro
    Ubuntu

    Re: daru3 battery charged but laptop shuts down when AC adapter is removed

    Quote Originally Posted by Cicer View Post
    Hi guys, my daru3 has been cruising along until a recent power supply problem. I normally get about 2 hours to a charge but recently, after using up most of the battery power, shutting down, and recharging, the laptop stopped powering up unless the ac adapter was plugged in. If the AC adapter is removed, the laptop shuts down immediately.

    Here's where the system says my battery is:
    Code:
    user:~$ cat /proc/acpi/battery/BAT0/*
    alarm:                   unsupported
    present:                 yes
    design capacity:         2400 mAh
    last full capacity:      1595 mAh
    battery technology:      rechargeable
    design voltage:          14800 mV
    design capacity warning: 0 mAh
    design capacity low:     0 mAh
    cycle count:		  0
    capacity granularity 1:  64 mAh
    capacity granularity 2:  64 mAh
    model number:            M720T/M730T
    serial number:            
    battery type:            LION
    OEM info:                Clevo Co.
    present:                 yes
    capacity state:          ok
    charging state:          charged
    present rate:            unknown
    remaining capacity:      1595 mAh
    present voltage:         14800 mV
    After looking here and here it sounds as if there could be a hardware problem in the battery or in the AC adapter.

    Has anyone else had this problem? Any ideas of what I could do to look into it further?
    Try reseating the battery. It may have been jostled loose.
    Ian Santopietro - System76 Technical Support.
    Open a Support Ticket!
    Ask a Sales Question!

  3. #3
    Join Date
    Oct 2008
    Beans
    19

    Re: daru3 battery charged but laptop shuts down when AC adapter is removed

    No luck with jiggling.

  4. #4
    Join Date
    Mar 2007
    Location
    Massachusetts
    Beans
    Hidden!
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: daru3 battery charged but laptop shuts down when AC adapter is removed

    Quote Originally Posted by Cicer View Post
    No luck with jiggling.
    I'm not sure just jiggling is the same a re-seating. Try:

    1. Shut down and turn off the laptop
    2. Unplug
    3. Remove the battery
    4. Inspect the connections and clean/blow out any debris/dust
    5. Put the battery back in making sure it is properly seated
    6. Make sure that the lock tabs are set.
    7. Let us know if this helps.

  5. #5
    Join Date
    Oct 2008
    Beans
    19

    Re: daru3 battery charged but laptop shuts down when AC adapter is removed

    Quote Originally Posted by jbelmonte View Post
    I'm not sure just jiggling is the same a re-seating. Try:

    1. Shut down and turn off the laptop
    2. Unplug
    3. Remove the battery
    4. Inspect the connections and clean/blow out any debris/dust
    5. Put the battery back in making sure it is properly seated
    6. Make sure that the lock tabs are set.
    7. Let us know if this helps.
    That's what I meant by jiggling No luck reseating. I suppose the next thing to do would be to test another adapter and another battery, if I can find them.

  6. #6
    Join Date
    Oct 2008
    Beans
    19

    Re: daru3 battery charged but laptop shuts down when AC adapter is removed

    Well, it seems that the problem was the logic board, not the battery or the adapter. At least that's what the repair shop said when I brought it in after the dartur ultra finally died last night. It now attempts to start and then fails after 15 seconds or so. I thought that it was the adapter at first, but a multimeter showed it to be working fine. The laptop lasted just over 4 years, which is kind of a bummer--it was fine for my uses and I had hoped it would hold me for another couple. On the other hand, it did a great job and made getting into ubuntu easy.

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