What is you runtime - x 10

[riceman]

A buddy of mine just linked me to a news release out of Standford University's Dept of Materials Science and Engineering. Check it out!

The future is in electric

[lincpimp]

If they extend this to the std disposable batteries I may only have to change the AAs in my camera once a year! I always use the energizer lithium disposable aa batteries, they last a lot longer than alkalines.

Man, Imagine a runtime of 4 hours in an electric rc, we will need water cooling to keep the other components cool!

[Patrick]

Sounds good! Hopefully they'll be practical for rc, and not take too long to get them to us.
It will make conversions easier if we can just use a battery with the same footprint as a nitro fuel tank.
I wonder how safe they be compared to normal lipos.

[DrKnow65]

Do they take ten times as long to charge too?
Suppose they will cost ten times as much?

[BL_RV0]

hmm a $3000 lipo. nice thought.

[crazyjr]

Hmmm using this tech, my 8000 maxamps packs would be 80,000 mah, cooooooooooool

[aqwut]

won't be a while until it comes to RC, the Si nanowires probably can't handle the high currents.. but I don't really know...

[Patrick]

It would be good if they have the same "C" rating as good lipos. Replace your 8000mah 20C (160 amps) with 80,000mah 20C packs, 1600 AMPS! Man 80,000mahs...do a whole race season on 1 charge
Or use a pack 1/10th the size and keep the same runtime and performance. I can dream can't I...

[aqwut]

Originally Posted by Patrick

It would be good if they have the same "C" rating as good lipos. Replace your 8000mah 20C (160 amps) with 80,000mah 20C packs, 1600 AMPS! Man 80,000mahs...do a whole race season on 1 charge
Or use a pack 1/10th the size and keep the same runtime and performance. I can dream can't I...

I'm having the same dream as well.... but it's time to wake up... I'm building a nuclear powered RC car.. I can go 25 years straight..

[Patrick]

Originally Posted by aqwut

I'm having the same dream as well.... but it's time to wake up... I'm building a nuclear powered RC car.. I can go 25 years straight..

You just don't want to replace all those lipos you bought

[MTBikerTim]

The problem is with all battery improvements we seem to just increase our consumption to match. Their laptop comparison holds true for current lithium batteries in laptops if they were put in laptops ten years or so ago.

[highflier]

A lot of claims but we have to wait and see where the rubber hit s the road so to speak.

If the claims were valid, Cooling would not be such a issue.
1) Lets just double the MAH and double the Voltage
This will give you 4 times the run duration, Less heat, Less weight.

2) Buy a second pack.

Say you used to run 20 Min. Now you run 1 hour 20 min on a pack and have a more agile vehicle. Since it is running higher voltage you will have cooler electronics.

The biggest issue may be finding motors with a low enough KV to run good on 44 volts. Opps need some new ESC's to go with this.

Highflier

[riceman]

Originally Posted by aqwut

won't be a while until it comes to RC, the Si nanowires probably can't handle the high currents.. but I don't really know...

I agree that this will be quite a while before it hits mainstream as a consumer product. There is hope though...

"Given the mature infrastructure behind silicon, this new technology can be pushed to real life quickly," Cui said.

However, the possibilities are exciting which is why I posted. Remember this is not Tekin, Castle, Novak etc.. backing this project. It is the likes of ExxonMobil, GE, Schlumberger and Toyota with the intent of developing high energy-density batteries for electric vehicles (1:1 scale not 1:8 ) so it should be able to handle high currents.

Stanford, California—March 23, 2007—Global Climate and Energy Project (GCEP) Director Franklin M. Orr Jr. has announced a record $15 million in awards for eight research programs and five one-year exploratory research efforts to be conducted at Stanford and a number of other institutions...."

Three new research efforts are focused on high energy-density batteries for electric vehicles in the area of advanced transportation and include activities of Yi Cui and Friedrich Prinz of Stanford....

GCEP is a collaborative effort of scientific and engineering communities in academia and industry. Its purpose is to conduct fundamental, pre-commercial research that will foster the development of global energy solutions that significantly reduce greenhouse gas emissions. The GCEP sponsors-ExxonMobil, GE, Schlumberger and Toyota-intend to invest $225 million over a decade or more in the project....

[BL_RV0]

now how much would a 120000 mah lipo weigh?
well considering the maxamps 2s 12000mah is 545 grams, this would be 5450 grams, which is 12.1 pounds. um. say hello to the 45lb e-maxx with 24hr runtime.

and only cost $2300 for a 2s battery.