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Old 12-25-2013, 01:38 PM   #31 (permalink)
40-60-40 MPH P&G
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Echo-P&G - '05 Toyota Echo base
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I have 6 2.7v 650f capacitor = 16.2v 108farad

Maxwell 650 Farad Ultracapacitor Super Capacitor Car Stereo Supercapacitor Qty 6 | eBay

Best Tank (1557.2 Km): 2.57 LHK (91.63 MPG (US) )
Best Highway Trip (~36.8 Km): 2.16 LHK (109 MPG (US) )
Best Commute Trip avg (73.8 Km ): 2.33 LHK (101 MPG (US) )
Echo-Troll Modding Thread

I know i dont have a very good write-up
no lean-burn? no good gear ratio? p&g is the answer
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Old 12-25-2013, 03:57 PM   #32 (permalink)
...beats walking...
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I'm not sure, but I believe this equation is what you're asking about (from Wiki):

...it lets you equate capacitor wattage to battery wattage...but not Watt·Hours, unfortunately.
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Old 12-26-2013, 09:34 AM   #33 (permalink)
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0.5xCxV^2 = 3.9 watt-hours for the 16.2 volts 108 farad device.
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Old 12-26-2013, 06:17 PM   #34 (permalink)
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Your prius is like the insight. It uses a dc to dc converter to charge the battery, so having a cap across it helps to add a buffer so the circuit isnt on all the time, but cycles off and on giving is more reserve or the hybrid system and better mpg.

Originally Posted by P-hack View Post
How do you evaluate the risk/reward here? At night I run the lights and everything with the engine off, and need to be able to start reliably if I am at a stop. As well winter is coming. The extra battery weight helps me glide a little farther/faster too. How does this ever pay for itself and how often does it leave an EOCer (or regular user) stranded in the process?
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Old 12-26-2013, 07:17 PM   #35 (permalink)
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I did borrow the cigarette lighter voltmeter idea from the vid The little battery in my civic runs down faster than I'm used to, so hopefully I won't be caught dead at the green light.

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