Wasn't that about what the red beastie had?
Z
[quote] Dave Davidson <xxx@xxx.xxx> wrote:
> Well, I messed up my weight calculations. I don't think even the
> Sunrise II can handle 100 500ah cells. A good size truck, possibly.
> They would weigh a bit over 3000 pounds. Just takes a little more
> money, lol.
>
> Dave
>
> On Tue, May 1, 2012 at 5:57 PM, Dave Davidson <xxx@xxx.xxx> wrote:
> > You can get a 500 mile range now. All it takes is money. Select a
> > vehicle that can take a lot of weight like we chose for PbA
> > conversions. Put in an AC system (or even a high voltage DC system)
> > and 100 Thundersky or equivalent 500ah cells. That's a 180 kwh pack.
> > And even larger size cells are available. I bet a 180kwh pack would
> > get you a 500 mile range. Especially in something like Lee Hart's
> > Sunrise II, which is being designed to handle a LOT of battery weight.
> >
> > Dave
> >
> >
> > On Tue, May 1, 2012 at 5:11 AM, brucedp5 <xxx@xxx.xxx> wrote:
> >>
> >> Do We Really Need a 500-Mile EV Battery Pack?
> >>
> >>
> http://www.greencarreports.com/news/1075785_do-we-really-need-500-mile-el=
ectric-car-batteries
> >> [images&video] Do We Really Need 500-Mile Electric Car Batteries?
> >> By Nikki Gordon-Bloomfield Apr 30 2012
> >>
> >> [video
> >> http://www.youtube.com/watch?v=3D8pMFLpiqPAc
> >> IBM Battery 500: A look inside a lithium-air battery
> >> Apr 19, 2012 by IBMLabs
> >>
> >> In 2009, IBM researchers set out to develop lithium-air battery
> >> technology capable of powering a family-sized electric car for
> >> approximately 500 miles (800 km) on a single charge.
> >>
> >> Instead of using heavy metal oxides, lithium-air batteries borrow
> >> oxygen from the air as the vehicle is being driven, creating an
> >> air-breathing battery. This results in lighter batteries with high
> >> energy density that extend the car's range from a single charge.
> >>
> >> IBM researchers have successfully demonstrated in the lab the
> >> fundamental chemistry of the charge-and-recharge process for
> >> lithium-air batteries and, if this bold research project is
> >> successful, people could see it in cars between 2020 and 2030.
> >> ]
> >>
> >> Back in January, we told you about IBM=92s quest to build a
> >> rechargeable lithium-air battery that could theoretically let an
> >> electric car travel 500 miles on a single charge.
> >>
> >> Since then, more firms have joined IBM on its Holy Grail adventure,
> >> leading to a flurry of stories heralding the end to range anxiety
> >> and a future where charging your car only takes place once a week.
> >>
> >> But do we really need a 500-mile electric car battery?
> >> Or do lithium-air batteries offer something much more useful?
> >>
> >> 200, 300 miles, not 500
> >> As most Americans what they think of as the limit of how far they can
> >> drive without stopping, and they=92ll say somewhere between 200 and 300
> >> miles.
> >>
> >> That=92s because your average person needs to visit the bathroom after
> >> 4 hours, especially if they=92ve consumed too many high-caffeine
> >> road-trip drinks.
> >>
> >> At an average speed of 75 mph, on a perfectly clear freeway, that 4
> >> hours equates to 300 miles.
> >>
> >> [image
> >>
> http://images.thecarconnection.com/med/highway-rest-stop--aaa-foundation-=
for-traffic-safety_100369122_m.jpg
> >> Highway rest stop - AAA Foundation for Traffic Safety
> >> ]
> >>
> >> Admittedly, rapid charging, currently capable of offering an 70
> >> percent recharge to cars like the 73-mile EPA-rated 2012 Nissan Leaf
> >> in 30 minutes, takes longer than going to the bathroom.
> >>
> >> After 4 hours however, it=92s highly unlikely that you=92ll immediately
> >> return to your car after visiting the bathroom. More likely,
> >> especially if you have kids, will be a 20-30 minute break for food or
> >> drink.
> >>
> >> And that gives you at least 30 minutes to recharge.
> >>
> >> Longer range...
> >> Because lithium-air batteries rely on the chemical reaction between
> >> the lithium-ions and oxygen in the air, lithium-ion batteries have a
> >> higher energy density than traditional rechargeable batteries which
> >> rely on chemical reactions between two stored metals within the
> >> battery.
> >>
> >> In a nutshell, this means that per pound of weight, lithium-air
> >> batteries can store more energy, which equals longer range.
> >>
> >> Remember however: that longer range wouldn=92t be needed for 95 percent
> >> of all daily driving,
> >>
> >> Isn=92t that just extra complexity and cost for nothing?
> >>
> >> or better efficiency?
> >> There=92s a problem however. Weight. The heavier something is, the more
> >> energy is needed to push it along.
> >>
> >> At the moment, lithium-ion battery packs used in modern electric cars
> >> account for their increased weight when compared with conventional
> >> gasoline cars.
> >>
> >> Take the 2012 Nissan Leaf for example, where the battery pack and its
> >> control module weigh a massive 660 pounds. And it=92s that weight that
> >> accounts for the Leaf=92s 73-mile EPA-approved range per charge.
> >>
> >> Reduce an electric car=92s weight by using a more energy-dense battery,
> >> and it will travel much further using the same amount of stored
> >> energy as an electric car with a less energy-dense battery pack.
> >>
> >> Smaller, lighter battery =3D lower cost
> >>
> >> [image
> >> http://images.thecarconnection.com/med/tesla_100325170_m.jpg
> >> Tesla Motors - Model S lithium-ion battery pack
> >> ]
> >>
> >> If rechargeable lithium-air battery packs become commercially viable,
> >> the reduced physical battery pack size could help reduce the overall
> >> cost of building and buying an electric car.
> >>
> >> And with less weight, it should cost even less to operate an electric
> >> car with a lithium-air battery compared with a traditional lithium-ion
> >> battery of a similar energy capacity.
> >>
> >> Reduced manufacturing costs and better efficiency on the road should
> >> then translate to lower sticker prices and faster adoption -- even if
> >> electric vehicle range remains somewhere between 150 and 200 miles.
> >>
> >> You choose
> >> Ultimately, lithium-air batteries may offer the holy grail of 500-
> >> mile per charge range. But ask yourself this: Do you really need it?
> >>
> >> Or would you rather have a lighter, more agile electric car that
> >> costs less to run? [=A9 2011 Green Car Reports All Rights Reserved]
> >> ...
> >>
> http://www.automobilemag.com/features/news/0706_electric_vehicles_battery=
/viewall.html
> >> (Feb 2009) ... ""Practical" range means as much as 300 miles between
> >> charges to compete with a tank of gas." ...
> >> ...
> >>
> http://books.google.com/books?id=3Dc9F4ebT55DYC&pg=3DPA63#v=3Donepage&q=
[top]3D%22nsired%22&f
3Dfalse
> >> Popular Science Feb 1995 "It's the battery, stupid!"
> >>
> >>
> >>
> >>
> >>
> >>
> http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/Nam=
lServlet.jtp?macro=3Dsearch_page&node=3D413529&que ry=3Devln&sort=3Ddate
> >> All EVLN posts
> >>
> >> {brucedp.150m.com}
> >>
> >> --
> >> View this message in context:
> http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-It-s-th=
e-bladder-stupid-tp4600383.html
> >> Sent from the Electric Vehicle Discussion List mailing list archive at
> Nabble.com.
> >>
> >> _______________________________________________
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