That's almost $2000/ kwh, which is close to 10 times the cost of the
best lead acid. That doesn't seem to make sense for solar yet, but it
would for electric vehicles because of the weight reduction. Possibly
their price has dropped in 2 years? I'm seeing some other sources in
the EV world selling 100 AH Li+ cells for about $450/ kwh, which is more
like it.
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 9/22/2013 10:14 PM, Kevin Pegg wrote:
I did get a quote from Corvus for one project back in Feb 2011. Client
hasn't given go ahead yet. 12.4 kWh, ie 2 of their 8D format cells was
going to set me back $24,000 CAD. The contract for purchase document
is only slightly less complex than purchasing a home..... 14 pages
worth of.
Kevin
-----Original Message-----
*From:* re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org]*On Behalf Of
*Ray Walters
*Sent:* September 19, 2013 9:51 PM
*To:* RE-wrenches
*Subject:* Re: [RE-wrenches] Li-I question
Looks interesting, I've been waiting for Li+ to start making
sense on larger scales.
The cycle life does not appear to be better than a HUP lead acid
battery, despite the claims of "10 times the cycle life of an AGM
battery" I'm confused because in their white paper they also
claim: 200 cycles at 100% DOD < 2000 cycles at 80% DOD > 3000
cycles at 80% DOD.
What does that mean?
Also the warranty has 3 yr free replacement, 10 yr prorated, but
doesn't cover shipping or installation, and also demands an
engineering evaluation of the installation to allow the warranty.
Despite their claims of being the most comprehensive warranty in
the business; it is not.
My entire power tool collection as well as my computer and phone
run on Li+, so I'm a believer, but I've also been vetting BS
claims in our industry for over 2 decades. Corvus needs to put
more time into some BCI cycle life charts, and provide a warranty
that covers shipping and installation time like others. Some case
studies, and independent testing would help as well.
Anybody have any ball park pricing on this?
R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760
On 9/19/2013 9:58 PM, Kevin Pegg wrote:
These folks are real I've met with and touched the product. I've
been working on a possible use of these but client hasn't said go
yet so can't quite yet vouch for the product.
http://www.corvus-energy.com/
Kevin
-----Original Message-----
*From:* re-wrenches-boun...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org]*On Behalf
Of *Allan Sindelar
*Sent:* September 16, 2013 12:58 PM
*To:* RE-wrenches
*Subject:* [RE-wrenches] Li-I question
Wrenches,
In order to provide accurate information about lithium-ion
batteries, I'm looking for referrals to current suppliers
with available product, with specifications and retail
pricing available. Having read Randy Richmond's article on
Li-I in HP153 earlier this year and Dan Fink's posts here, I
understand the advantages and limitations. I am just looking
for actual supplier websites and contacts, please.
Thank you,
Allan
--
*Allan Sindelar*
_Allan@positiveenergysolar.com_
<mailto:al...@positiveenergysolar.com>
NABCEP Certified PV Installation Professional
NABCEP Certified Technical Sales Professional
New Mexico EE98J Journeyman Electrician
Founder and Chief Technology Officer
*Positive Energy, Inc.*, a Certified B Corporation^TM
3209 Richards Lane
Santa Fe, New Mexico 87507
*505 424-1112 office 780-2738 cell*
_www.positiveenergysolar.com_
<http://www.positiveenergysolar.com/>
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