Re: OT: Battery Technology Update

Michael Johnson wrote:

> Gene Wagenbreth wrote:
> 
>> Correct my arithmetic if I am wrong.
>>
>> A 70 KWatt hour battery.
>>
>> Recharge it in 10 minutes requires 420 KWatts for 10 minutes. Where 
>> the heck
>> are you gonna find a 420 KWatt circuit. At 120 volts thats about 3500 
>> amps.
>> Not gonna do that at home. Lets try a gas station. Five cars wanna 
>> 'fill up'
>> simultaneously. Station needs 2 MWatts of power coming in. Sounds like
>> a LOT of infrastructure has to be built.
> 
> 
> My guess is that initially these cars will be commuter vehicles and will

> be slow charged overnight.  Actually, they probably can be topped off 
> every night since most daily commutes are well under 120 miles and 
> definitely under 250 miles.  The beauty of it is the gas station can 
> have an electric plug-in next to the pump.

Yikes.  Having a high-current source next to a gas pump should cause a
few good fires -- just wait until Joe SixPack pulls out the cable when it
is delivering a KAmp or two at 120V.  And, when it is pumping E85 which
can't be put out with water, the fire department will have a nice
surprise.
-- 
Cheers, Bob