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-   -   Replace your car battery with capacitors! (http://ecomodder.com/forum/showthread.php/replace-your-car-battery-capacitors-26363.html)

redneck 07-09-2013 06:55 PM

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.


http://www.youtube.com/watch?v=GPJao1xLe7w



Think you need large capacitors to do the job ?


Think again...


http://www.youtube.com/watch?v=z3x_kYq3mHM



Mini BoostPack 12V Capacitor Car Battery Hybrid


http://www.youtube.com/watch?v=8miq6sDy0wA

Author's website.

12V BoostPack



I'm going to do this... :D


>

kach22i 07-09-2013 07:46 PM

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.

user removed 07-09-2013 07:55 PM

God help him if those capacitors are made in China.

regards
Mech

redneck 07-09-2013 08:54 PM

Quote:

Originally Posted by Old Mechanic (Post 379766)
God help him if those capacitors are made in China.

regards
Mech

Maxwell Technologies (world class)

United States
Switzerland
Germany
China

Maxwell Technologies Company Overview Ultracapacitors, Microelectronics and High Voltage

Leader in Ultracapacitors

>

mikeyjd 07-09-2013 10:31 PM

Thanks red :)

Lbar 07-09-2013 11:29 PM

Did I miss where he said what the capacitors cost in the first vid?

RiceCake 07-09-2013 11:43 PM

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).

California98Civic 07-10-2013 12:11 AM

Quote:

Originally Posted by Lbar (Post 379805)
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 (Post 379808)
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.

RiceCake 07-10-2013 12:18 AM

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.

Xist 07-10-2013 02:55 AM

Quote:

Originally Posted by RiceCake (Post 379818)
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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