<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">The A123 cells might be the answer to powering transmitters designed for 8 NiCds. Will three cells package in the space available?<div><br class="webkit-block-placeholder"></div><div>Jim O</div><div><br class="webkit-block-placeholder"></div><div><br class="webkit-block-placeholder"></div><div><br><div><div>On Feb 16, 2008, at 4:43 PM, brett terry wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite">The smaller batteries are sold at Walmart as the Black and Decker VPX pack. $18 for a 2-cell pack. Seem cheap enough to me. A few places sell the the pack ready to go for $39, maybe that is why the price seems high.<br>Remove the case, throw on a pigtail, shrinkwrap the whole thing, and it is ready to go. <br> <br>They are roughly 1000 mAh usable, more available current than our planes can possibly pull, and very little voltage depression (voltage will always be above 5.5 - 6V, anybody fly Spektrum?), and very fast charging time. Also the design spec on the cell is 1000 cycles at 10C discharge. 3.5 oz weight, all up for a 2S pack.<br> <br>Good stuff, but we need to balance the pros and cons.<br><br>Brett<br><br><div class="gmail_quote">On Feb 16, 2008 7:05 PM, Ihncheol Park <<a href="mailto:pnahobbies@sbcglobal.net">pnahobbies@sbcglobal.net</a>> wrote:<br> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> <div> <div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Vince,</font></span></div> <div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span> </div> <div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">a few of local guys fly with A123 as RX pack. They are a little high on the initial voltage, but most of Spektrum receivers handles fine.</font></span></div> <div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">However, each cell of original size 2300mAh weighs a little more than 70 grams each. Unless you are using them on IMAC planes, not a good choice.</font></span></div> <div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">I know A123 cells are now available at a smaller capacity around 1200mAh, but they aren't cheap.</font></span></div> <div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">On the AR9100, I may be cheaper to run lipo and lighter.</font></span></div> <div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span> </div> <div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Ihncheol</font></span></div><br> <div dir="ltr" align="left" lang="en-us"> <hr> <font face="Tahoma" size="2"><b>From:</b> <a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a> [mailto:<a href="mailto:nsrca-discussion-bounces@lists.nsrca.org" target="_blank">nsrca-discussion-bounces@lists.nsrca.org</a>] <b>On Behalf Of </b><a href="mailto:vicenterc@comcast.net" target="_blank">vicenterc@comcast.net</a><br><b>Sent:</b> Saturday, February 16, 2008 10:05 AM<br><b>To:</b> NSRCA <br><b>Subject:</b> [NSRCA-discussion] FW: Re: [SA] Spektrum AR9100 RX and A123batteries<br></font><br></div><div><div></div><div class="Wj3C7c"> <div></div> <div>Another interesting option below. Who is flying the A123 batteries? Any feedback is welcome</div> <div> </div> <div>--<br>Vicente "Vince" Bortone</div> <div> </div> <blockquote style="border-left: 2px solid rgb(16, 16, 255); padding-left: 5px; margin-left: 5px;">-------------- Forwarded Message: -------------- <br>From: Tom Fawcett <<a href="mailto:tom@wildharerc.com" target="_blank">tom@wildharerc.com</a>> <br>To: <a href="mailto:vicenterc@comcast.net" target="_blank">vicenterc@comcast.net</a> <br>Subject: Re: [SA] Spektrum AR9100 RX <br>Date: Sat, 16 Feb 2008 15:52:36 +0000 <br><br>Yes I have used it, if only for one flight. It works as advertised, a <br>very nice product for current hungry planes. It's also easier to install <br>since it does not require as much wiring. If you use A123 or Nimh packs <br>they can be wired directly into the receiver, no switch and no <br>regulators in line. <br><br>As a footnote, when I used it I had two A123 lithium packs, one powered <br>only the receiver as "Batt 1" and the other powered the reciver as <br>"Batt-2" and also powered the ignition. I have done this mow several <br>times with Spektrum receivers with no problem whatsoever. The A123 packs <br>have so much capacity it seemed a shame to carry even more for ! the ign ition. <br><br>TF <br><br><a href="mailto:vicenterc@comcast.net" target="_blank">vicenterc@comcast.net</a> wrote: <br>> <br>> Hello all, <br>> <br>> Just would like to know opinions on this product. Any one using it? 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