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GasBuddy News Article

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One Step Closer to Game-Changing Battery

The Energy Collective -- Envia Systems’ breakthrough battery is one step closer to commercialization after a public vote of confidence last week from the CEO of General Motors (GM), Dan Akerson. The fact that Envia’s energy-dense battery could lead to an electric vehicle with a range of 200 miles per charge is not remarkable on its own. Where the Envia battery truly stands out is on the cost issue. CEO Atul Kapadia has set a conservative target of building “a 200-mile car cost[ing] no more than $25,000 and a 300-mile car cost[ing] no more than $35,000.”

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Submitted Aug 19, 2012 By: AnnElk
Category: Daily News Article Discussions > Topics Add to favorite topics  
Author Topic: One Step Closer to Game-Changing Battery Back to Topics
REPLIES (newest first) Post a Reply
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1OILMAN
Champion Author Alabama

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Message Posted: Aug 20, 2012 12:36:18 PM

I prefer a V8
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sparky808
Champion Author Honolulu

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Message Posted: Aug 20, 2012 12:20:56 PM

Thank you for posting.
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crep1291
Champion Author Ottawa

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Message Posted: Aug 20, 2012 9:31:49 AM

At 25,000$ per 10 years, that's a depreciation of 2,500$/year. Still a bit too high. I'd rather have power on the highways and have a battery a quarter that size...
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ktyson13
Champion Author Maryland

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Message Posted: Aug 20, 2012 8:13:55 AM

Show me the money!
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akitaone
Champion Author Tampa

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Message Posted: Aug 20, 2012 1:58:26 AM

I don't think so, show me!
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GasFreeLeaf
Champion Author Orange County

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Message Posted: Aug 20, 2012 1:38:38 AM

Looking 4 years into the future,really?
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Jeff4U
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Message Posted: Aug 20, 2012 12:13:12 AM

Just make a better one for my Droid, alrighty?
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crreed1
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Message Posted: Aug 19, 2012 11:22:44 PM

need a job to buy one
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Zonk
Champion Author Michigan

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Message Posted: Aug 19, 2012 11:21:39 PM

It won't happen in the next few years.
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gamalerin
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Message Posted: Aug 19, 2012 11:14:32 PM

I don't think this is going to happen soon.
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VetteFan
Champion Author Indiana

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Message Posted: Aug 19, 2012 11:14:29 PM

The real drawback for me is the question of whether an EV becomes disposable after 10-12 years. Exactly how much will it cost to replace the power pack? A $25,000 vehicle after 10 years is worth around $6,000 to $8,000 at most. If it costs thousands to replace the battery that price is likely cut in half. At that point won't it be essentially junk?
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Focus2
Champion Author Illinois

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Message Posted: Aug 19, 2012 11:14:26 PM

$25,000 is over twice the price I paid for my brick home new!

Build cars that run on CNG and they can forget the electric car. They can't act ignorant about natural gas as they all have been asked to build them.
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jkpsr
Champion Author New Jersey

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Message Posted: Aug 19, 2012 11:12:02 PM

This is just one more step in a process to free us of fossil fuels.
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mfeldstein
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Message Posted: Aug 19, 2012 11:11:10 PM

Every baby step in the right direction is a very good thing.
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SteelPenny
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Message Posted: Aug 19, 2012 11:10:23 PM

Right.
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lunarrv15
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Message Posted: Aug 19, 2012 11:08:20 PM

okay...interesting
thanks for posting
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firedudette
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Message Posted: Aug 19, 2012 11:08:15 PM

ok
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jetskijerry
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Message Posted: Aug 19, 2012 11:08:06 PM

good luck!
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souly
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Message Posted: Aug 19, 2012 11:07:38 PM

thanks for the post
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frostyWV
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Message Posted: Aug 19, 2012 11:07:27 PM

not for me.
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joel27nc
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Message Posted: Aug 19, 2012 11:07:08 PM

Need to bring the price under $20,000 for me to even think about getting one.
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cheapertvs
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Message Posted: Aug 19, 2012 11:05:14 PM

It does not matter: electric cars would still be too expensive for me.
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METEOR49
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Message Posted: Aug 19, 2012 11:05:11 PM

there is no need for the price tag to be so high.
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jem069
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Message Posted: Aug 19, 2012 11:04:09 PM

Ok
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Vitobug
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Message Posted: Aug 19, 2012 11:04:02 PM

ok
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pastorpaulcg
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Message Posted: Aug 19, 2012 11:03:27 PM

Cool
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regout
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Message Posted: Aug 19, 2012 11:03:16 PM

One of these days...
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ManOfLeisureII
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Message Posted: Aug 19, 2012 11:01:49 PM

No way this car lasts 15 years.
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rahcat
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Message Posted: Aug 19, 2012 11:01:36 PM

No EV for me.
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defiancegasman
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Message Posted: Aug 19, 2012 11:01:08 PM

Still want either a VERY QUICK CHARGE or gas backup engine for on the road!

The VOLT idea is still the best!
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GRUMPY55
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Message Posted: Aug 19, 2012 11:00:20 PM

ok
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jrsva
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Message Posted: Aug 19, 2012 10:58:07 PM


Battery technology is continually evolving; this is one step in that process. EVs are not yet ready for prime time but we are getting closer.
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toytech3
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Message Posted: Aug 19, 2012 10:57:59 PM

Sounds good
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Vitobug
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Message Posted: Aug 19, 2012 10:57:56 PM

ok
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mgune9
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Message Posted: Aug 19, 2012 10:57:35 PM

that's good --- we'll see
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jackster111
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Message Posted: Aug 19, 2012 10:54:43 PM

cool
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Beaveronparade
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Message Posted: Aug 19, 2012 10:50:27 PM

Interesting. Sounds like a good thing.
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beachmanglen
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Message Posted: Aug 19, 2012 10:49:32 PM

Compressed natural gas is the answer to power. We're too far away in developing reliable battery technology.
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pgerassi
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Message Posted: Aug 19, 2012 10:49:05 PM

Lithium Sulfur batteries have such a density, but they can only be charged about 50-100 times before they lose about 20% of their capacity. The most telling graph is one of capacity at 80% DOD which is typical of today's EVs. It shows a 33% loss of capacity in just 150 cycles whereas LiFePO4 usually gets about 3,000 cycles. Li-S has a capacity of 100-120AH compared to a LiFePO4 battery of just 20AH, however Li-S has a average voltage of 2.5V compared to 3.2V for LiFePO4, so the capacity for 0.5kg cell is 275WH for Li-S and 64WH for LiFePO4. Envia's is 45AH at 4.2V for 189WH. Double those for /kg levels or 550WH/kg for Li-S, 128WH/kg for LiFePO4 and 378WH/kg for Envia. So the total capacity before 80% level is reached is 29.7KWH/kg, 276KWH/kg and 2.72KWH/kg respectively for Li-S, LiFePO4 and Envia. The quick loss of 20% at just 10 cycles is the reason for the low lifetime showing. If you use 66% as the lifetime the values are 53.5KWH/kg, 497KWH/kg, and 39.8KWH/kg. Li-S has better range and costs less than Envia's solution. The current LiFePO4 20AH foil pack has over 100 times the lifetime storage under the current standard rating system and 12.5 times using Envia's rating system.

See here for the graphs:

http://www.hybridcars.com/news/envia-li-ion-battery-yields-world-record-energy-density-41768.html
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MotoDad
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Message Posted: Aug 19, 2012 10:47:21 PM

Want it
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bonzoonfmb
Champion Author Florida

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Message Posted: Aug 19, 2012 10:47:18 PM

We'll see. Just because GM and ARPA (two government entities) support the technology and the company doesn't mean that it is viable, cost-effective or the panacea for affordable energy storage.
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joeschmo12
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Message Posted: Aug 19, 2012 10:43:18 PM

finally... although we're decades behind...
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oldiesman
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Message Posted: Aug 19, 2012 10:41:27 PM

GM=Government Motors= Obama = Government Interference.
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FuelOilOH
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Message Posted: Aug 19, 2012 10:40:54 PM

There's a way to do everything you just have to find it.
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Night Owl
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Message Posted: Aug 19, 2012 10:40:40 PM

Let's see it on the road. This technology is desperately needed.
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Chris46
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Message Posted: Aug 19, 2012 10:38:42 PM

Get the price down to 22K
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ot4kidz
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Message Posted: Aug 19, 2012 10:38:32 PM

Won't believe it until it is actually in production.
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LCSTEELERBOB
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Message Posted: Aug 19, 2012 10:36:58 PM

to make these cars work it will take a game closer
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tidalwave3
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Message Posted: Aug 19, 2012 10:35:29 PM

Interesting and we will see :)
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nru
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Message Posted: Aug 19, 2012 10:34:27 PM

another step
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