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<font size="3" face="Arial">Hi Darryl,</font> </p>
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<font size="3" face="Arial">When looking at off-grid systems, in your opinion, how often is there excess current, i.e. more amps from the PV / Charge Source than can be absorbed & approximately what percentage of capacity?</font> </p>
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<font size="3" face="Arial">Looking at Lithium Ion, like NMC, you can recharge at 2x Capacity (so 1/2 hour recharge times) however, for off-grid, what do you do with all the excess charging capacity once the bank is full?</font> </p>
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<font size="3" face="Arial">LA have decent acceptance until they approach fully charged (20%) and lead calcium (AGM, Gel or Flooded Calcium) maintain a higher acceptance rate for longer. There's always a downside (lower cycle life, higher cost, etc) but Flooded Calcium may have a place in the off-grid space.</font> </p>
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<font size="3" face="Arial">Regards,</font> </p>
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<font size="3" face="Arial">Jamie</font><br><br>>>> Darryl Thayer <daryl_solar@yahoo.com> 8/24/2011 11:44 AM >>><br> </p>
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<span>One of the advantages of LiFeP is the fast rechange rate. I have found that fast recharge is very hard on LA batteries, if they are recharged faster they fail sooner. Perhaps Jamie or others could answer is there something that can be recharged fast? Capasitors are almost impossible to work with. Lead carbon? Ni Magnisum Cobalt?</span><br> </p>
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<span style="font-weight: bold"><b>From:</b></span> Jeff Oldham <starpower4u@juno.com><br><span style="font-weight: bold"><b>To:</b></span> re-wrenches@lists.re-wrenches.org<br><span style="font-weight: bold"><b>Sent:</b></span> Tuesday, August 23, 2011 5:31 PM<br><span style="font-weight: bold"><b>Subject:</b></span> Re: [RE-wrenches] Lithium Ion Phosphate for grid back up<br><br> </p>
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I 2nd what Ray Waters is saying. Much too soon, BMS will be an insane challenge, we rarely care about weight and footprint like the EV's do. Returning defective cells to China IF they accept responsibility for the failure - I don't think so!! Sex appeal is overwhelming good judgement, one of the curses of our industry.<br><br><br>From the Solar, Wind and Hydro powered office of Jeff Oldham/Regenerative SOLutions </p>
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<font color="#000000" size="2">____________________________________________________________</font><br><font face="Arial" color="#004080" size="3"><a href="http://thirdpartyoffers.juno.com/TGL3132/4e542a7bb4c77837e37st04vuc" rel="nofollow" target="_blank" style="text-decoration: none"><b>Penny Stock Jumping 3000%</b></a></font><a href="http://thirdpartyoffers.juno.com/TGL3132/4e542a7bb4c77837e37st04vuc" rel="nofollow" target="_blank" style="text-decoration: none"><font face="Arial"><br style="text-decoration: none; font-family: Arial"></font><font face="Arial" color="#000000" size="2">Sign up to the #1 voted penny stock newsletter for free today!<br style="text-decoration: none; font-family: Arial; font-size: 2; color: #000000"></font></a><font color="#000000"><a href="http://thirdpartyoffers.juno.com/TGL3132/4e542a7bb4c77837e37st04vuc" rel="nofollow" target="_blank" style="color: #000000">AwesomePennyStocks.com</a></font> </p>
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