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Lasted edited by Andrew Munsey, updated on June 15, 2016 at 1:41 am.

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Discussion page for Directory:EEStor

Image:Eestor cell 95x95.jpg

Texas company is working on an "energy storage" device made from ceramics. It's not technically a battery because it doesn't use chemicals. It can allegedly charge within 5 minutes with enough energy to move a car 500 miles on about $9 worth of electricity -- about 45 cents a gallon.


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What if it short circuited?

On September 26, 2006, TreeHugger writes:

"It's a REALLY BIG dielectric capactor! Running 31F at 3500V in 336 pounds gives them 350Wh/kg. I really hate to think what would happen if a single one of all those parallel dielectrics failed! 52kWh through a short circuit could melt the thing to slag." We certainly wonder what happens when we try to get 52 Kwh out of our house into the car in less than five minutes as Ian claims.

How do I charge an electric car in 5 or 10 minutes?

Ian Clifford was presumably claiming a charge time of 5 minutes for the 15KWh unit which will initially be used to power the ZENN electric car, not a 52KWh unit as in the Eestor patent.

The easy way to do this is to have TWO Eestor units - one in the house and one in the car. You charge the house unit at night in a few hours using cheap-rate electricity (which a number of countries and regions have, but not all) at 110v or 240v and a current that is comfortable for the house supply. Then you can charge the car from the house unit in 5 minutes using a well insulated cable at 3500v and 70 amps (approx, depending on converter losses at both ends). For a 52Kwh unit 10 mins would probably be more comfortable.

Charging with normal household outlet

According to Ian Clifford a normal household outlet with 110 volt supply can fully charge the EESTOR powered CityZENN in 4 hours for a 250 mile range and a normal household outlet with 220 volt supply can fully charge the EESTOR powered CityZENN in 2 hours for a 250 mile range. CityZENN target price will be around $30000.

A short calculation indicates that at normal 220V household power line, the battery would require 1412 amps to charge in 5 minutes. If a more realistic 100 amp charging circuit is maintained, then the charge time entends to 2.4 hours.

: Agreed. However, who cares, so long as we can recharge our cars over night. The grid today has the capacity to deliver much of the energy we need to power our cars, as long as we charge them when we typically charge our cell phones - at night. The real problem with EEStor is that they haven't shown us anything real, and we've been waiting for multiple years. If they're real, they need to come clean, otherwise, please just go away.

09-18-09 EEStor files for UL testing

This means they have something to test!


EESTOR may be running out time. I work for the world's largest auto manufacturer (not American owned), and there are persistent whisperings that we are close to releasing the results from their own prototype for their own ultra capacitor, which has better specs for miles per charge than EESTOR's. (380) This will be a major break for electric vehicles, which may be on the road within 2 years. The capacitor will charge just as fast, but will require modifactions to your main electrical panel by your local service. Minor compared to the upside.

Mr. T

See also


Directory:Feel Good Cars

- Directory