Direct power feed from laptop battery to firewire interface

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  • waigy
    Senior Member
    • Nov 2009
    • 93
    • UK
    #1

    Direct power feed from laptop battery to firewire interface

    I'm considering powering my Motu traveler firewire audio interface directly from my Motion m1400 tablet battery.
    The motion only has a 4 pin firewire port so can't bus power the traveler.

    I did a half hour recording test by connecting two wires to the motion's battery terminals and squeezing the battery in.
    The 2 wires went to a power connector for my motu traveler and it worked fine.

    The next stage is to solder a permanent connection inside the motion.

    I know doing this will effect the motion's power handling circuit.
    What problems is this likely to cause and do I have to add any other components inbetween the battery connection and the traveler?

    The traveler can use any 10-18 volt dc 12 watt power supply with any polarity.

    BTW. I know you can get pcmcia firewire cards, but I don't want to use one.
    Tags: None
    • kc8adu
      Super Moderator
      • Nov 2003
      • 8832
      • U.S.A!
      #2
      Re: Direct power feed from laptop battery to firewire interface

      a fuse at the + lead right at the battery.
      iirc the motion stick packs are 14.8v.
      i have one on my bench to rebuild right now.

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