Best replacement battery for MOBO.

Discussion in 'Processors, Motherboards & Memory' started by 1031982, May 31, 2008.

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  1. The_YongGrand

    The_YongGrand Just Started

    if I'm not mistaken, those barrel-shaped CMOS batteries on older motherboards can recharge by itself when the PC is on. Dunno how much amps per hour these batteries can supply, but they are usually doing it more than just trickle!! :D
     
    The_YongGrand, Jun 24, 2008
    #21
  2. iModAMD

    iModAMD Newbie

    Normaly when the computer is plugged on the universal plug the BIOS data is not supposed to be restored to default... the battery is only there for when the universal plug is putted off... So i don't understand why each time you put off your computer the bios data goes to default....
     
    iModAMD, Jun 25, 2008
    #22
  3. Adrian Wong

    Adrian Wong Da Boss Staff Member

    If that happens, it means your CMOS battery is dead and you need to replace it.
     
    Adrian Wong, Jun 25, 2008
    #23
  4. iModAMD

    iModAMD Newbie

    Ya i know but why the data goes to default? The mobo is still supplied by the PSU power
     
    iModAMD, Jun 26, 2008
    #24
  5. Adrian Wong

    Adrian Wong Da Boss Staff Member

    If I'm not mistaken, the CMOS data is maintained only by the battery, which is constantly being recharged by the main power. So, if it dies, the CMOS data will not be retained because the battery just doesn't have enough juice to retain the data.
     
    Adrian Wong, Jun 26, 2008
    #25
  6. iModAMD

    iModAMD Newbie

    I tryed today with 4 different mobos (Asus, Gigabyte,MSI,And IBM .. i did THE SAMES TESTS WITH EACH MOBOS....

    I arrived to this conclusion

    If the Battery is retired and there still power on the board(by the psu) the cmos data will be not erased

    If the battery is retired and the mobo is not supplied of power... the cmos data will be erased(DUH)

    If the battery is faulty and the board is suplied of power 2 on the 4 boards the cmos data was not erased...(Gigabyte and Asus one)

    If the battery is faulty and the board is not supplied of power the cmos data is erased(DUH)

    (I used the same faulty battery on all the boards)
     
    iModAMD, Jun 27, 2008
    #26
    1 person likes this.
  7. Adrian Wong

    Adrian Wong Da Boss Staff Member

    Wow.. Thanks for checking it out and getting a final word on this! +rep! :thumb:

    PS. Can I use this information for an editorial? Will need information on what were the motherboards and PSU you used. Thanks!
     
    Adrian Wong, Jun 27, 2008
    #27
  8. iModAMD

    iModAMD Newbie

    Ya will send you all the infos by mail ;)
     
    iModAMD, Jun 27, 2008
    #28
  9. Adrian Wong

    Adrian Wong Da Boss Staff Member

    Thanks!! :thumb: :thumb:
     
    Adrian Wong, Jun 27, 2008
    #29
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