Lithium ion ultracapacitors hit volume production (and in the US)

What does 115% higher mean ?
a) previous value times 1.15 ?
b) previous value times 2.15 ?
or something else ?

Li-ion cell cycle life are based on 100% depth-of-discharge and at, for example, 50% DOD, cycle life doubles. Do these ultracapacitors exhibit the same characteristic?
Also, will lithium metal form in the device with extended overcharge, as do li-ion cells?

Interesting: those things approach the energy density of a chemical cell. Given that the energy content of a cell is E = Ah * V and energy stored in a capacitor is 1/2 C V^2, they have an approximate Ampere-hour rating of 320 mA-hr, well within an order of magnitude of a Li-ion cell like 18650. Of course they have fantastically lower ESR, so they can be charged and discharged much faster---limited only by the ESR, self-heating and available current.
Indeed, it takes 40 minutes of 1A charging current to charge them up to rated voltage. 1 minute charge at 40A is probably impractical because it would dissipate 22 Watts on its ESR.

Does the capacitance of this device have when two are placed in series? Is this true of other Super capacitors as well? Answer please!

I think they will be too expensive for forseeable future, and it seem basic to the physics of these that the voltage is much too low.
Other than "keep-alive" applications for clocks, small computers, they will have only narrow applications.

I can see applications in small EVs, such as golf carts, electric bicycles, wheelchairs, forklifts etc. Driving on a freeway when traffic is slow, you may have 60 brake cycles per hour, eating into the 20,000 recharging cycles of 20,000 in a hurry.

So are they really integrated battery and capacitor? a true hybrid? That would be quite something. And just how fast can they store energy? Capturing regenerative braking power is very demanding, it is a lot of power in a very short time, if hard braking is done. The very best product would be a super capacitor with a much higher voltage it would be a game-changing development.
As for DIY servicing on HEVs, it will never happen, because of the potential lawsuits from the non-competent shocking themselves. Even now, just attempt to purchase a service part for the drive system of an electric vehicle, and see what I mean.

Eventually supercapcitors will be good enough to store energy fast and supply energy just as fast. But why you smart engineers that are thinking about the hybrid cars don't talk about flywheels which can do the job much better with better energy storage capability and are not polluting , it is safe and stabilizes the car.

I would like to see results from intermediate results. For instance, 20,000 cycles full to 0% capacity is not the same as 100,000 cycles to full to 75% (That is just an example number - not a spec).

WardXmodem,
Dude it has been a very long time. I still have a few Master I/O boards if you are interested. Heh. Also #1 or #2 (I forget which) is on display in my living room.
Google "M. Simon" to find me. I'm the top result.

Equalization in a "HV" bank is still a problem and a loss mechanism. In autos they are only good for operational storage due to leakage.

Sometimes, a new device needs a purpose. With its leakage and 20K cycles, just what application WOULD be best for such a device?
I have one answer: "toys", particularly flying toys, but NOT the specific ones in this article: Very quick charge time is important (little non-fly time).
Other portable devices such as Cell phones: again, above too big, and even if repackaged appropriately probably a limited market for "quick charge".
Let's do some math: Say you want it to run 5 years. 20,000 charges/5 years = 11 charges/discharges per day.
Could someone do the math on an electric vehicle given the specs? For ex. does ESR comment mean not enough current available for high-current use?
I'd like to see the discharge curve also. if 2.6V is run at 200ma for 1 hr, that's about half a Watt Hour = the middle cap; but wondering what voltage is over time.

The ESR of the biggest Li Ion Capacitor (1000 F) is 14 mOhm.
That's still an order of magnitude higher than the ESR of a NiCad battery of equivalent stored energy.
So, the Li Ion Ultracap's true competitor for high current applications would be a NiCad battery, political correctness aside.

I see them integrated into the Electric and Hybrid cars as an in-between the regenerative braking system and the main Lithium battery pack. The function would be to capture as much of the energy from braking with rapid charging then slowly discharge to the main battery pack or quickly discharge to the electric motor as the demand requires. I am concerned that this part may need to be replaced many times before the main battery packs due to low cycle life. Hence, it will need to be a shop or DIY replaceable unit.

Supercapacitors always were a hybrid between conventional capacitors and batteries. Viewed as batteries they were fast to charge and discharge and had superb cycle life but had poor energy density. Viewed as capacitors they had superb energy density but very poor cycle life.
These devices seem to edge closer to batteries. The energy density is higher than double layer parts but at a cycle life of 20,000 they are not that much better than the best lithium ion bateries and about ten times lower energy density. They do however charge and discharge much faster than a lithium ion batteries.