Tesla unveils latest battery pack technology 'Powerwall'

[Pirate88179]

http://video.foxnews.com/v/4209384375001/tesla-unveils-latest-battery-pack-technology-powerwall/?#sp=show-clips


Musk claims this new technology as a world changer.

I guess we will see.

Bill

[Paul-R]

Maybe its a a better battery, but that's  all.

The real  issue is: Do we know  or can we find out how to  make one at home?

[mscoffman]

Physical Battery Specifications for Tesla Powerwall are here. (no electrical connector information)  Web Link..

http://www.teslamotors.com/powerwall

Batteries are coupled to the hybrid grid tie inverter through what is known as a "battery charge controller
component" this component that is not included here. The charge controller is user programmed for the detailed
battery type. 12VDC lead/acid battery systems would be known as low voltage battery (high amps) systems.
These are known as a high voltage DC battery system. So these are the batteries only. While this installation is
not rocket science, these high capacity units are just waiting to take you out, so one must be careful and plan
each step.

There are literally hundreds of different grid tie inverters that need to have the utility power to be up to work
and so with a battery you will need one of other half dozen or so hybrid type inverters with *optional* grid tie
capability.

..S..MarkSCoffman

[lancaIV]

world changer ? blablabla

More than 90% of the world habitants in their households do not need more than an one KWh batteriepack,better Ultra-capacitor/battery-pack (f.e. CSIRO/AUS) for they daily electricity consume satisfaction.

www.oeko-energie.de european life style
standart household 18 KWH per day versus intelligent household 3 KWh per day

and optimium way of life explored by - behaviour re-engineering
                   http://mtbest.net/

A really good example and a pioneer for the E.U.-administration "NearlyZeroWatt-building"-program -in execution and progress.

Down-under 0,8 KWh per day http://mtbest.net/household_efficiency.pdf

           We need new battery concepts,battery materials ,really ?
        Let us go to that page http://home.earthlink.net/~fradella/green.
                                           Citing:

About 20 years ago, Fradella built a 300-watt demo version of a small system based upon this diagram.  It demonstrates regenerative bi-directional speed control and proportional braking. Regenerative battery charging automatically results whenever the motor is decelerated.  He has demonstrated it to countless manufacturers and researchers involved with EVs, propulsion, and robotics.  Average life of motor-cycle batteries in the demo has been about 10 years. These batteries were guaranteed to last only 90 days.

             Ten years life for a lead battery,not enough "saft" ?

[mscoffman]

Yes but it's the inital cost of the lead/acid commodity that creates the cost in this case.
It almost doesn't matter what you do with the battery afterwards as the majority of
the the cost involves creating the initial lead metal frame. So acid/lead battery lifetimes
are very sensitive to changes to the manufacturing process and are generally fully under
control of the individual battery manufacturer.

I think one wants to try to avoid problems of household energy availability during the
northern winter - holiday season for example. Then is not time for attempting to begin
reeducation for  peoples energy use, IMHO.

Lithium changes the initial cost data point. You know from your own experience
with battery powered equipment that battery lifetime seems is "getting good" in terms of
recharging cycles. This much different then when batteries use was first starting out.
New problems showing up in automobiles are not expected to be seen as readily in
housing use because momentum based mechanical bump and grind wear will not be
present in fixed siting applications.

..S..MarksCoffman