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Thread: Grrrr....Battery died

  1. #11
    Retired Admin Aaron Cake's Avatar
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    Originally posted by gizmomkr:
    <STRONG>Aaron, just my rough guess after dealing with automotive stuff. (relays, starters, charging circuits)
    Its hard to get exact figures on higher amperages ( with the equipment I have)
    </STRONG>
    I'm not worried about it, I just didn't want anyone to get the wrong idea. I have, well, not extensive, but quite a lot of experience with starter motors. I have used them in several electric go-kart projects, and the current these things suck is amazing. There's no way a go-kart is as much of a load as a cold car engine, but they still took over 150A to get moving. We often had problems with melting connections and such...Anyway, the whole point is that during the first second or so of cranking, surge currents can be around 300A or so, then tapering off to 150A as the engine spins, then rapidly going down to about 10A as the engine starts....

    <STRONG>[/quote]
    But if its of great concern to you, I can dig up specs from my friend (Sales / Tech for Honda)</STRONG>[/QUOTE]

    Not too worried about it. Oh, and Honda's don't count. It can't take much effort to get those three gerbils running on their wheels....
    Player: Pentium 166MMX, Amptron 598LMR MB w/onboard Sound, Video, LAN, 10.2 Gig Fujitsu Laptop HD, Arise 865 DC-DC Converter, Lexan Case, Custom Software w/Voice Interface, MS Access Based Playlists
    Car: 1986 Mazda RX-7 Turbo (highly modded), 1978 RX-7 Beater (Dead, parting out), 2001 Honda Insight
    "If one more body-kitted, cut-spring-lowered, farty-exhausted Civic revs on me at an intersection, I swear I'm going to get out of my car and cram their ridiculous double-decker aluminium wing firmly up their rump."

  2. #12
    Maximum Bitrate gizmomkr's Avatar
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    Awww not more honda bashing..... havnt us rice burners taken enough heat this past month....

    I love my gerbil / rice rocket. Its like a teddybear to me ( a big metalic one)Its cute and cuddly like that downey bear
    Gizmo-
    Techonlogy on Wheels
    http://www.hjnetworks.com/car

  3. #13
    Constant Bitrate
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    Another thing to remeber is that the Amp/Hour rating of a batery is often measeured at C/10 or C/20. i.e. For a 100 A/hr rated battery the capacity is only 100A/hr at a constant current draw of 10A(meaning the battery will last 10 hours) the capacity may only be half this or less at 100A(meaning the battery may only last 30 minutes). This isn't all that relevant to mp3 cars but I think it's worth noting in this discussion.

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