oooo nice!

[stj]

what kind of damage could we do with a few of these?
http://www.alibaba.com/product-detai...48041.html?s=p

[joshnz]

Re: oooo nice!


Fast charge flash light

[mariushm]

Re: oooo nice!

You can use several of them as car battery replacement. Spot welding maybe...

[stj]

Re: oooo nice!

i was actually thinking about maybe using them as the primary source in a coil-gun.
but the price needs to come down a lot first.

5 of those would give me a 5KA load-dump!!!!!!!!

you could also use one to prime a directional emp cannon.
(not that i would of course )

[desert-rat]

Re: oooo nice!

Its only rated at 2.7 volts . Still if you put a bunch togher you could use them as a battery and run a car off them .

[stj]

Re: oooo nice!

amps over volts anyday when your after a bang!

volts give you a bright flash and maybe a burst of x-rays, but amps give you molten metal!

[tom66]

Re: oooo nice!

"Nanocarbon graphene" LOL.
If they lie about that, I wonder if the capacitance rating is actually correct?
You can get some good ultracapacitors from surplus sites like Elec Goldmine.

[desert-rat]

Re: oooo nice!

I just wounder if this is for real , a 5000 f cap in what looks like a D battery .

[stj]

Re: oooo nice!

if you look at the foto's,
that "D cell" looks more like a 500ml beer can or larger!

[desert-rat]

Re: oooo nice!

Even in a budwiser size can its hard to believe putting a 5000 f cap in that space . This is more the kind of cap I am usted to seeing .
http://www.johnstonesupply.com/store...ep?pID=G36-079

[stj]

Re: oooo nice!

oh it's doable all right,
but it's not gonna discharge in a burst - atleast not without some damage.
datasheet says the charge time for 5000Farad is 10seconds to 10min's (maybe over the temp range)
and the ESR is .23
so they have the capacity, but speed wise they are more like a battery.

[momaka]

Re: oooo nice!

IIRC, graphene was discovered not that long ago. I think it was about a year ago when someone showed me a video that mentioned the possibility of huge supercapacitors based on graphene. So maybe they are finally here. Pretty cool tech, IMO.

Electric go-carts, anyone?
Enough of these in series/parallel should give you the same results as lead-acid batteries. The added advantage is that you can deep-cycle discharge them without issue.

[stj]

Re: oooo nice!

you could re-charge your electric car in 10 seconds.
the only 2 problems are:

1: it would probably cost over 10,000$ for the "battery" pack.
2: you would need to hook it up to the local grid to get the current.

having said that, the packs from honda and toyota are so expensive that it may be feasable.
you need 200v minimum.
so about 70 caps - i wonder how much space that would take up.

[momaka]

Re: oooo nice!

so about 70 caps - i wonder how much space that would take up.

If each cap is about the size of a 330 mL soda can... a standard pack has 12... so 6 packs (72 cans). That's maybe a bit bigger than the size of a gas tank? (or not? - I'm not that much of a car person)

Even if the "battery pack" is as expensive as you said, I still think it would be worthwhile as long as that minimum 1 million number of charge cycles holds true. I doubt any regular battery can come close to this figure.