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Thread: m2 atx with hardoff=never

  1. #1
    Variable Bitrate Nerd2's Avatar
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    m2 atx with hardoff=never

    HI there,

    I've had a search, but could not find, the answer to:

    If i use STR (S3), and then put hardoff=never on my M2 ATX, am I right that the worst that could happen is the battery drains low, the M2 ATX cuts off, and I can still start the car?

    By my googling the battery could last somewhere between 50-400 hours in S3.

    Thanks for help!
    Sam

  2. #2
    Constant Bitrate rxh81's Avatar
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    Hi,

    My board needs 0,17A in S3 Mode (measured incl. M2), 0,11A in off mode and about 3,3-3,8A on.
    That means with my 60Ah battery it should last 60/0,17= 353h = 14,7 days in S3 and about 17h comlete on.

    But I'm almost sure, when the M2 cuts off because of an voltage under 11V to prevent deep discharge of the battery, there will be too less energy left to start the engine, especially if it's cold.

    Some other experiences?

  3. #3
    Variable Bitrate Nerd2's Avatar
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    Cool thanks for the data. I think you might be right about the M2, i'm not too worried about draining my battery for now, so i'm experimenting.

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