Negative Amperage while fully charged

Discussion in 'MacBook' started by gdot, Feb 8, 2010.

  1. gdot macrumors newbie

    Feb 8, 2010
    Hello I am new to the forum but I was reading about the batter life of the MB (I have the 2009 MB). My battery has a negative amperage (-349) even though it is fully charged and it says its on AC power. Is this normal? Because isn't negative amperage mean that energy is coming from the batter o_O but its on AC power as well....

    If this has been addressed please refer me to the thread i just did a quick search but couldn't find anything.

    Also, I don't know if this matters but I am at cycle count 9 and 96% capacity (Coconut) and 97% (iStats) and its 3 months old. Full Cap: 5272, now 5111.

    Thanks for your help!
  2. fluffyx macrumors 6502

    Oct 25, 2007
    I'm not an electrical engineer, so I don't know what those numbers mean, but I can tell you that they're 100% normal on your Mac laptop.

    Negative amperage = normal.
  3. cmaier macrumors G4

    Jul 25, 2007
    Amps is the unit of current, which is directional - the "-" just refers to a direction.

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