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A row of diodes and a resistor all parallel. The diodes allow the starter to draw current, but block recharging so the charge current has to pass the resistor.
A DC-DC converter would efficiently and safely recharge the caps, but most cheap DC-DC converters have a significant parasitic draw on either end - even if the other end is not connected.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
  lifetime FE over 0.2 Gigameter or 0.13 Megamile.
For confirmation go to people just like you.
For education go to people unlike yourself.
Last edited by RedDevil; 11-18-2018 at 04:53 PM..
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