Quote:
Originally Posted by ECONORAM
Do you just need to wait a few seconds after switching the key to on to let the caps build up, before you move it to start? Or is that the issue? Would that prevent the voltage sag?
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Think of capacitors like compressed air tanks for electricity. There's no waiting to use their contents, and as they are used, their pressure (voltage) drops linearly. It would be better to start the vehicle quickly so they don't drain too much.
Quote:
Originally Posted by oldtamiyaphile
OK, so I've been watching my voltage lately and it turns out my issue was simply too much EOC. The voltage dip is gone but my MPG has taken a big hit. Solar panel will be here next week so that should solve all.
The voltage still takes a dip to below 12V when bump starting though which I find a bit surprising.
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If you mean bank of 350 farad caps, I don't really find that surprising. In series, six of them would total 58.33 farads of capacitance, giving you an amperage dump of 233.32 amps (from 14 to 10 volts drop). That isn't much.
The stumble could be from any number of things, like there not being enough voltage to excite the alternator immediately. I'd recommend testing with a larger bank of 650s (108.3 farad effective, 433.2 amps capacitance), or adding a second bank of 350s (which should halve voltage drop).