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Thread: Dual Battery Connection diagram

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    Constant Bitrate Juliemac's Avatar
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    Apr 2004
    Upstate NY

    Dual Battery Connection diagram

    Till the microcontroller is ready, I added a second battery with isolation and charging relay. The relay closes when the key is turned to the on position. The 50A diode stops the support battery from discharging to the starter battery.
    A quick and easy circuit!
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    1981 VW Scirocco, 2L 16v turbo. EEEPC 1000 running Mega Squirt and music.

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