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Old 07-09-2013, 06:55 PM   #1 (permalink)
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Replace your car battery with capacitors!

.

Replace your car battery with capacitors!




So, would you like to shed 25-30 lbs. of dead weight from your car...???


If so, check this out.



DIY 12V BoostPack.






Think you need large capacitors to do the job ?


Think again...






Mini BoostPack 12V Capacitor Car Battery Hybrid




Author's website.

12V BoostPack



I'm going to do this...


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Old 07-09-2013, 07:46 PM   #2 (permalink)
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I wonder what the long term effect on his car computers will be.

If this works so well, I have to wonder if race cars and or track cars are already into this technology.
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Old 07-09-2013, 07:55 PM   #3 (permalink)
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God help him if those capacitors are made in China.

regards
Mech
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Old 07-09-2013, 08:54 PM   #4 (permalink)
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Quote:
Originally Posted by Old Mechanic View Post
God help him if those capacitors are made in China.

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Maxwell Technologies Company Overview Ultracapacitors, Microelectronics and High Voltage

Leader in Ultracapacitors

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Old 07-09-2013, 10:31 PM   #5 (permalink)
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Old 07-09-2013, 11:29 PM   #6 (permalink)
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Did I miss where he said what the capacitors cost in the first vid?
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Old 07-09-2013, 11:43 PM   #7 (permalink)
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Capacitors have self-discharge.

Couple that with the fact that the caps don't have a lot of amp-hour capacity, and your car will undoubtedly pull a tiny trickle of current to keep your clocks and settings in order...

So unless you plan to charge the car after it sits a few hours (which will undoubtedly result in a totally dead capacitor bank), you'll need a battery.

And then you've defeated everything.

Neat idea though as a boost option. If you could get 6 seconds of cranking out of a bank of them, it would be nice to have in winter.

2000+ cranking amps for the win

Edit: Also without inter-cell balancing, a single cell could (theoretically) be overcharged by the cars alternator, resulting in a nasty explosion (or just the cap venting, YMMV).

Last edited by RiceCake; 07-10-2013 at 12:30 AM..
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Old 07-10-2013, 12:11 AM   #8 (permalink)
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Quote:
Originally Posted by Lbar View Post
Did I miss where he said what the capacitors cost in the first vid?
Yes, he did say. The smaller pack was built with 6 capacitors that cost, IIRC, something like $10 each. The first pack, with bigger and cheaper capacitors, I can't recall what eh said they cost (or if he said )

Quote:
Originally Posted by RiceCake View Post
Capacitors have self-discharge.

Couple that with the fact that the caps don't have a lot of amp-hour capacity, and your car will undoubtedly pull a tiny trickle of current to keep your clocks and settings in order...

So unless you plan to charge the car after it sits a few hours (which will undoubtedly result in a totally dead capacitor bank), you'll need a battery.

And then you've defeated everything.

Neat idea though as a boost option. If you could get 6 seconds of cranking out of a bank of them, it would be nice to have in winter.

2000+ cranking amps for the win

Edit: Also without inter-cell balancing, a single cell could (theoretically) be overcharged by the cars alternator, resulting in a nasty explosion (or just the cap venting, YMMV).
When you watch the videos, you'll see how he tests and answers these problems... the "mini-boost pack" lasts a whole weekend in one test, cranking the car after three nights without a new charge from the ALT. For longer duration, he ultimately hybridizes the "mini boost pack" with a small battery.

Really quite cool. But I would think that the benefit in weight-loss causes a problem for FE by loading on the alternator, which will have to charge the capacitors pretty often. This might be a fun way to attempt to copy Mazda's capacitor charging regenerative braking system.
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Last edited by California98Civic; 07-10-2013 at 12:34 AM.. Reason: needed to correct confusing "gain in weight" phrase in last paragraph
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Old 07-10-2013, 12:18 AM   #9 (permalink)
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Quote:
When you watch the videos, you'll see how he tests and answers these problems... the "mini-boost pack" lasts a whole weekend in one test, cranking the car after three nights without a new charge from the ALT.
Just gonna borderline disclaimer: don't believe everything you see on YouTube.

I wouldn't mind seeing further independent testing regardless.
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Old 07-10-2013, 02:55 AM   #10 (permalink)
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Quote:
Originally Posted by RiceCake View Post
Just gonna borderline disclaimer: don't believe everything you see on YouTube.

I wouldn't mind seeing further independent testing regardless.
Heh. Today my roommate mentioned someone calling a radio show and mentioning the research that he did on YouTube. The host asked "Wait, what?"

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