EEStor - EEStor - EEStor
Written by Greg Allen   
Tuesday, 17 June 2008

Let’s catch a few of the new people up to speed: I think almost everyone in this industry is waiting for the results of EEStor’s ultracapacitor claim.   EEStor is a secret little company in Texas and they filed UnitedStates Patent #7,033,406 that had six words that shook the energy industry: “technologies for replacement of electrochemical batteries”.  Replacement of the battery?!? Wow - That is a hefty claim… maybe a bit overdue, but a big claim.EEStor's Claim


So.. ZENN Motors out of Toronto, Canada bought the rights to the technology and will be using in their electric cars.  They will have a 250 mile range on a 5 minute charge (this will be longer if using a standard household plug - it is thought that it around 4 to 5 hours of charging time). ZENN has increased their retailers to 35 location and their sales are up over 130% from the prior year.  ZENN holds 3.8 percent of EEStor and has invested 2.5 million in the company. They also have the rights for car conversions using with EEStor’s technology when it is commercially available.


This website has had some awesome comments about EEStor in previous articles. Some pro and some con. I feel good about EEStor!  Some of EEstor's critics claim that what they write in their patent is simply wrong -they write that based on their own patent, they cannot store energy they claim.  Here is one comment that was posted here:

  * "Importantly, this is not a case wherein EEstor claims to have made some specific breakthrough regarding this issue. No such breakthrough is reported. There are no energy storage measurements, no permittivity versus field data, and no mention of eliminating or reducing dielectric saturation. Their patent and presentations indicate a complete lack of awareness (or lack of acknowledgment) of this issue. EEstor simply purports to make (or aspires to make) high K barium titanate based material, with a K of 18,000, and ultimately with an incredibly high breakdown strength of up to 300V/um. They then calculate the energy stored as ½ CV2 without comment on the use of this equation...


 How large of an error does this cause? Calculated energy density is ½K’E2 when calculated total energy is ½CV2. For K = 18,000, and a field 100 V/um, this invalid calculation gives 800 J/cc. (½K’E2 = (0.5)(8.85×10-12 F/m)(18,000)(1×108 V/m) = 8×108 J/m3 = 800 J/cc). Eight references describing actual studies of energy storage in high permittivity ceramic dielectrics (including barium titanate and BST) are noted below."  (Here is the full Reference) 

Then along comes an glorious endorsement from the worlds largest defense contractor:  Lockheed Martin.  They signed an agreement in January for exclusive rights to integrate EEStor’s technology into United States military and homeland security applications.  Although Lockheed Martin didn’t say they ever saw the actual EEStor test results.. this was a tremendous boost that EEStor needed.

So here we are… still waiting on new news about EEStor.  There is nothing new post.. no breaking news..  it is mainly a recap for the many new people.  I am excited for what EEStor has to offer and what they will be bringing to the table. We are getting a lot of new people coming here daily and taking a look at the ultracapacitor technology.  I am very excited about this.  Welcome!


THE PHOTO:  I forgot to mention that I actually got struck by lightning two days ago.  It hit me while I was leaving the office. It knocked my glasses off and popped the lenses out.  My EKG was fine and blood test were good.  My right leg is very numb and I am having trouble walking.  All my friends asked me if I had an ultracap in my pocket.  I kinda wished I did to take some of the shock away that I felt.  I am getting better.


Keep it Green!


Readers have left 19 comments.
 No.1  Untitled
interesting information on eestor with that link. i want to see more from this company soon. when will they produce something for us?
Anil (Unregistered) • 2008-06-11 20:34:28
 No.2  Untitled
You should definitely start playing the lottery.
EVcast (Unregistered) • 2008-06-12 03:26:26
 No.3  ZENN and EEStor Charging
On the charging, I read their website about the 5 minute charge.. it assumes that you can use 220V. Also one EEStor battery is used (52KW*HR):

220V*Xamps*5min = 52KW*60min comes out to 2836 amps.
This seems like it is very doable.
Guest (Unregistered) • 2008-06-12 06:13:41
 No.4  Untitled
According to the wikipedia article on Eestor, they have posted some numbers about permitivity and dielectric saturation, but there's criticism of what they're claiming.

To a great degree, all any of us can do is wait and see.

(Critics will of course criticize us for wasting effort on hoping that it works out. Of course, we can criticize them for wasting effort on convincing us of something for which evidence is lacking and with no practical consequences.)
Guest (Unregistered) • 2008-06-12 09:46:40
 No.5  EEStor Critics
(Critics will of course criticize us for wasting effort on hoping that it works out. Of course, we can criticize them for wasting effort on convincing us of something for which evidence is lacking and with no practical consequences.)
— Guest

I agree with you 100%... there has never been a statue built for a critic... only the heros.
Guest (Unregistered) • 2008-06-12 09:52:03
 No.6  Untitled
I believe the main problem is going to be mass production. If only ZENN has bought rights to this tech, it could be a sign that production of this ultracap is difficult. I doubt any other EV manufacturer would pass on this company if there was no problems with them.
SurferNate (Registered) • 2008-06-12 09:56:55
 No.7  Untitled
EEStor's ultracaps have the potential to change the industry, but they are taking their sweet time.

To the comment previously, ZENN has bought the entire rights to low- and mid-range cars. Long range producing companies will likely wait until the product is in a mass-production mode, and to ensure that they actually work.
Reader (Unregistered) • 2008-06-12 15:18:00
 No.8  Zenn
Zenn CEO said they will be looking to license the tech to OEMs, once Estor delivers a usable Eesu and they prove its viability in their CityZenn cars, which he keeps insisting will be available in late 2009.

I'll believe it when I see it. I'm not holding my breath, but I did buy a few shares in Zenn (ZNN.V, on the Toronto Stock Exchange, if memory serves).

IF they can pull it off, THEN my few hundred dollars will be worth a ton. If they can't, then I bought a very expensive lottery ticket.

Guest (Unregistered) • 2008-06-12 15:42:44
 No.9  Untitled
*IF* the folks at EEStor are putting on the world, Texas won't be big enough to hide them. They will forevermore be branded as con men totally unworthy of being trusted with even the smallest investment. They'll be lucky to find jobs sweeping floors.
Do they seem that stupid?
Guest (Unregistered) • 2008-06-12 15:58:51
 No.10  Untitled
From interview with eestor CEO Richard Weir
"Go back and read what Lockheed Martin said about this. I think that's very exciting. They said two things. They said it works. And they didn't say it works with this or that caveat.... they just said it works."

Are you confident that their technology will offer a greater amount of energy and power density than batteries?
Yes, and at a fraction of the cost.

Do their caps hold 10x the energy at 1/10th the weight of a lead acid battery?

"And second, they said it could ramp up into a high volume production environment"

Is there a production plan for 2008?
Yes for EEStor. Their approach is when they start manufacturing these batteries, not just the cells, but also the package assembly, they will be in production. If you can get a visit to EEStor they’ll show you their process and everything they’ve got in place to support that. Assuming that everything comes together in terms of tests and qualifications and that sort of thing, they will be ready to ramp up very quickly, because of the nature if the architecture and scalability of what they are doing.
Guest (Unregistered) • 2008-06-13 14:12:45
 No.11  Untitled
Why all the negative talk?? These guys are playing with the big boys now. Lets all just sit back and wait. They have stated 2008 and we are 1/2 way there. ZEN is ramping up an entire product line to be powered by this unit in 2009. I hope it comes to be at $1.40/liter. That is $6.50 a gallon in the old imperial system!!! OUCH!!!!
Guest (Unregistered) • 2008-06-16 14:08:19
 No.12  Untitled
I believe EESTOR never said they were producing a Capacitor. My understanding is that it is a Capacitor Battery Hybrid. I suspect the energy is somehow stored in the ionized dielectric which is contained by a super efficient insulator. This is just a guess. I am sure L.M. read the Wiki page and studied dielectric saturation before claiming that it works.
David (Unregistered) • 2008-06-17 21:47:14
 No.13  Kleiner Perkins
There are always skeptics. But even before lockheed, a place like Kleiner Perkins doesn't invest in a lot of charletons, these guys are amoung the top VCs of the last 40 years. They're not always right, but the fact they invested means lots of bright people thought it was possible. A company like Lockheed buying rights for US military apps helps support the idea that there could be a ZENN city car in 14-18 months
Guest (Unregistered) • 2008-06-25 21:58:06
 No.14  News just in
I think David (2 comments ago) is right. <a href="">Here</a>'s the latest news
"Sometime over the next several weeks, a privately held and ultra-secretive company named EEStor Inc., based in Cedar Park, Tex., is expected to release the results of independent third-party testing of its electrical energy storage unit..."
"EEStor has said it expects its technology to be commercially ready within six months."
"EEStor says its system, combining battery and ultracapacitor technology and based on modified barium titanate ceramic powder, could power a car for 400 kilometres with regular performance"
Guest (Unregistered) • 2008-06-26 10:51:12
 No.15  home power applications
it's very interesting to watch what EEStor might come out with finally. if it were available to cars and to home-power enthusiasts, it could change things. one idea I'm exploring is a "keep what you generate, share what you save" version of distributed generation. the software will be available as open source, but the project is underway as a masters thesis, and you can see it here:

John (Unregistered) • 2008-06-26 18:22:21
 No.16  Untitled
Guest (Unregistered) • 2008-06-28 12:56:40
 No.17  that Premlis looks cool
I went to the site:

and saw a 60Ah 12V unit listed, but do you know where to buy them and how much they cost?
jwgorman (Registered) • 2008-07-10 18:04:47
 No.18  Untitled
I believe Zenn first invested 1.3 million and then the balance of 2.5 million at a later date. If the technology was NG why would Zenn invest the additional money!?
Guest (Unregistered) • 2008-07-12 20:45:40
 No.19  Energy economics
Seems very promising.
*If it works*, this could be a truly disruptive technological breakthrough that has the potential to change the economics of our entire energy distribution system.
Energy distribution costs are a function of providing energy to meet peak demand.
With this type of technology, peak demand can be managed by storing energy at distributed sites during off-peak hours. Implementation could be driven by reduction in energy costs for consumers that "bank" off-peak energy to meet peak demand needs.

Guest (Unregistered) • 2008-07-13 16:44:11
The author or administrator has closed this item for comments.
Tag it:
Furl it!
Furl it!