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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Kevin,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I think it’s a very interesting idea, one that many would
like to see happen.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Whose LiFePO4 modules are you planning on using as the basis of
the pack?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Have they provided any test data to verify claims?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Best regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Marc Kohler<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
ausev-bounces@austinev.org [mailto:ausev-bounces@austinev.org] <b>On Behalf Of </b>Kevin
Douglass<br>
<b>Sent:</b> Wednesday, December 10, 2008 10:05 PM<br>
<b>To:</b> AusEV@austinev.org<br>
<b>Subject:</b> [ausev] LiFePO4 battery system suitable for DIY EV's<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello to all,<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>My name is Kevin
Douglass.<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I’m a member of
HEAA (Houston Electric Auto Association).<o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>We have a couple of
EE’s with experience in this sort of thing in the club who are starting
on a project to make a LiFePO4 battery system suitable for EV’s.
Tentatively these modules are expected to be about <b>4.5KWhr, 75VDC,
300Amps</b> max continuous, <b>600Amps</b> peak, with <b>22.5Kwatts</b> (29 hp)
continuous power. Modules can be series or parallel connected just like
commercial batteries. DC motor EV’s would probably take two modules
in series for 150VDC, 9KWhr capacity (@ 250W/mi ? 36 miles). A higher
voltage AC system could use three or four in series. A more powerful
DC system, or if you want twice the range, could use four (150VDC, 18KWhr.) in
series/parallel. Each module will be fully enclosed and protected; yet
individual cells can be easily replaced. Full BMS will be built-in, with
remote SOC/SOH display. The system may also have a built-in battery
charger and possibly a DC-DC converter (for 12V battery) depending on what
everyone agrees on.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>This is a big project
expected to take most of 2009. The predicted price of the modules is
currently $6,000 but subject to change as things are further defined. Our
desire is to be less expensive than other LiFePO4 systems available to DIY EV
builders, but of high commercial quality with safety as first priority.
To participate in the project, a contract, NDA, and earnest money will be required.
There will be a schedule for payments throughout the year as major milestones
are accomplished.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Is there interest in
this from members of the Austin EV list in particular but not limited to those
that are close to the Houston area. The cells are being bought in
quantity and building more modules lowers the cost of cells and the
proportional costs of getting the electronics made.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Please contact me at
713-927-6997 or </span><span lang=ES-AR style='font-size:10.0pt;
font-family:"Arial","sans-serif"'><a href="mailto:k.douglass@earthlink.net"><span
lang=EN-US>k.douglass@earthlink.net</span></a></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Thank
you,<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Kevin
Douglass<o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>No virus
found in this incoming message.<br>
Checked by AVG - http://www.avg.com<br>
Version: 8.0.176 / Virus Database: 270.9.10/1813 - Release Date: 12/10/2008
9:30 AM</span><o:p></o:p></p>
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