Terry Blanton wrote: > On Fri, Sep 19, 2008 at 1:46 PM, Jones Beene <[EMAIL PROTECTED]> wrote: >> ----- Original Message ---- >> From: Terry Blanton <[EMAIL PROTECTED]> >> >> Someone is buying energy for one and half cents per kWh? Where? >> >> >> >> In Lutz's dreams? > > I'm also afraid that the Li battery might be a wet dream but not for > the scarcity of the element. Lithium battery charge efficiency is > quite poor above 90 deg F.
Whoops! Say that again, slower! Its charge efficiency is *poor* above 90 F? That's "F", right, not "C"? Uh...... Let's see, suppose we're pulling 60 horses, or 45 KW, from the batteries. If it's, say, a 300 volt pack, then that's 150 amps. (And if it's more than 300 volts, watch out driving through puddles...) So, we've got 150 amps coming out of some combination of batteries and mogen -- batteries alone until they're part way down, then mogen while the batteries charge up, with electrons hopefully being pushed into the batteries as fast as the mogen can free them up from the task of pushing the car. Now, let's assume you're driving the car in the summer, anywhere in the lower 48, or southern Canada. Exactly how are they going to keep the whole shebang below 90 F while it's doing that? Peltier coolers and big heat sinks? Gonna eat into the range a bit in hot weather, eh? > And where are we gonna charge our Volts? > Maybe not in the hot garage in Phoenix. > > Terry >
