Quote:
Originally Posted by ECONORAM
I am a bit surprised that battery turns the 'vette's V8 over. Sounds tempting, maybe I could combine that with a capacitor pack after this Diehard decides to quit (only a year old).
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If your battery is just a year old and is dying, you likely have a large parasitic drain causing premature wear. Have you measured the parasitic drain with your vehicle turned off and all doors closed?
Aftermarket parts are often a culprit of excessive drain. I've got an aftermarket car alarm on the Camry and it pulls 50mA, which is more than twice as much as any other vehicle I have.
Determining parasitic draw is the first step in sizing a small battery or capacitor. You have to know how many days the vehicle can sit without causing damage to the battery or failing to start.