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Old 09-14-2017, 03:27 AM   #29 (permalink)
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Since this miserable thread won't be left alone to die, I'll add this even though it's apparent that many aren't reading the posts before they comment...

Originally Posted by oldtamiyaphile View Post
Self discharge appears to be a myth.
Depends on how you look at it. Self discharge is fairly high near the upper limits of rated voltage for a capacitor, but rapidly diminishes as voltage slightly drops.

The real problem with caps as a battery replacement is the constant parasitic draw of the vehicle. Since caps have such low energy storage to begin with, it doesn't take much time for a 25 mA parasitic drain to pull the voltage below a useful level.
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