[RE-wrenches] Li-I question

[Ray Walters]

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-bounces at lists.re-wrenches.org
>     [mailto:re-wrenches-bounces at 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 at positiveenergysolar.com_ <mailto:Allan at 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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