Installed costs on Tesla Wall 2 is $7500+ FYI and you have to have solar panels (i.e. buy them from solar city). I called up and its a SALES RACKET. finance the panels, but Tesla Wall is cash up front.On Tue, May 9, 2017 at 11:11 AM, Kev captainyoung@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:Tesla powerwall is $5500 for 14kwh. Where do you get 50kwh battery for$6000?On May 9, 2017 05:31, "Hannu Venermo gcode.fi@gmail.com [electricboats]" <electricboats@yahoogroups.com> wrote: None of that is needed in an era of cheap, common, high density lion
batteries, now coming out.
The cost basis near 100$/kWh, and energy density, near 400Wh/kg,
completely change everything 99.9% if people thought about electric
cars, trucks, boats, aeroplanes.
At 400Wh/kg we get electric aeroplanes. As in now, Near Soon Now, more
or less.
At 500 Wh/electric long-range aeroplanes.
Somewhere near/past that we get electric long range yachts, trains, and
electric cargo ships.
Examples:
In a Tesla S, 2200 kg - for a Very Heavy Very large sedan.
(Uses 260-80 Wh/km).
85 kWh power equals == 65 l of diesel in delivered mobility.
For a smaller medium sized sedan, about 200 Wh/km, about 50 kWH == 65 l
of diesel.
(Tesla Model 3, BYD Qin, 50+ models coming soon..).
A 50 kWh battery == 6000$ cost;
250 kg mass.
This is cheaper ! than BMW 3 series engine + gearbox. 3000$ each for
engine + gearbox, == 6000$ total.
This is lighter than a BMW engine, gearbox, fuel tank, radiators,
starter, alternator, exhaust, driveshafts.
+ 60 kg of fuel.
Total == 400 kg mass.
The extras == 500-1000$ total, all-in.
So, today, the electric optimum best-in-breed is already cheaper to
make, and lighter in mass.
And the lion battery energy density will still be increasing, 5-9% y/y,
as it has done last 16 years.
The costs I mentioned are broadly what auto companies pay for something
like a BMW3-series gearboxes and engines, qty 100k+ per year.--
On 09/05/2017 15:22, mkriley48@yahoo.com [electricboats] wrote:
> the right idea but you did not carry it far enough. Imagine a
> standardized plug on the back of every car and trailer hitch. Then a
> very small trailer carrying either CHARGED batteries or a small
> generator can be picked up at the start of the long trip and dropped
> off at the end! No weight penalty,no costly infrastructure upgrades
> and the business model is already in place at car rental and" u haul"
> agents!
> mk
-hanermo (cnc designs)
Posted by: Dale Hotten <dalehotten@gmail.com>
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