<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
IR numbers of 6-7 per cell mean the packs are pretty much done for
our purposes. A good new 25C pack should have IR numbers around 2-3
and a 35C pack around 1.8-2.2 or so. Essentially with an IR of 6
you have a battery that will perform like a 10C or 15C battery which
will limit the top power output and will run hotter doing so.<br>
<br>
Chris<br>
<br>
<br>
<div class="moz-cite-prefix">On 6/7/2015 11:04 AM, Stuart Chale via
NSRCA-discussion wrote:<br>
</div>
<blockquote
cite="mid:BLU436-SMTP204C515FC4E3ABEFCC100FEFDB00@phx.gbl"
type="cite">
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
2 possibilities.<br>
1) packs are worn out replace and fly (most likely)<br>
2) Motor is messed up rotor demagnetized if Neu or Hacker etc.
Generally current is much higher than expected and hotter after a
flight. <br>
<br>
If you fly with another pattern pilot with similar battery
setup/connectors you could always borrow a good battery for a
flight.<br>
<br>
<div class="moz-cite-prefix">On 6/7/2015 10:55 AM, Ron Hansen via
NSRCA-discussion wrote:<br>
</div>
<blockquote cite="mid:003501d0a132$0e7faef0$2b7f0cd0$@wowway.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<meta name="Generator" content="Microsoft Word 14 (filtered
medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"\@SimSun";
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
tt
{mso-style-priority:99;
font-family:"Courier New";}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle22
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
<div class="WordSection1">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">The
packs are less than adequate on some or most of the
advanced maneuvers.<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>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">They
are also getting more and more difficult to charge to
close to 100%. Actually I can’t really get then to 98%.<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>
<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"">
<a moz-do-not-send="true" class="moz-txt-link-abbreviated"
href="mailto:atwooddon@aol.com">atwooddon@aol.com</a> [<a
moz-do-not-send="true" class="moz-txt-link-freetext"
href="mailto:atwooddon@aol.com">mailto:atwooddon@aol.com</a>]
<br>
<b>Sent:</b> Sunday, June 07, 2015 10:35 AM<br>
<b>To:</b> <a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:rcpilot@wowway.com">rcpilot@wowway.com</a>;
<a moz-do-not-send="true" class="moz-txt-link-abbreviated"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a><br>
<b>Subject:</b> Re: [NSRCA-discussion] Battery Resistance<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Ron,
what is the pack temperature when you are measuring the
resistance? Temperature has a big impact on the
measurement.<br>
<br>
Also, how are you measuring the resistance? <br>
<br>
If those are the resistance values (6 per cell) at 70F
measured with an iCharger, FMA charger or Giles dedicated
meter, then the pack is starting to get 'tired'. However,
if they get you thru your sequence and isn't too hot at
the end, go ahead and use them until they don't perform
adequately.<br>
<br>
Another thing that can kinda sneak up on you is lipo packs
gradually loose capacity over time. If you fly the same
sequence each time and the voltage at the end gets lower
and lower, the packs are probably loosing total capacity.<br>
<br>
Don<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><o:p> </o:p></span></p>
</div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">-----Original
Message-----<br>
From: Ron Hansen via NSRCA-discussion <<a
moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>
To: NSCRA Discussion List <<a moz-do-not-send="true"
href="mailto:nsrca-discussion@lists.nsrca.org">nsrca-discussion@lists.nsrca.org</a>><br>
Sent: Sun, Jun 7, 2015 7:24 am<br>
Subject: [NSRCA-discussion] Battery Resistance<o:p></o:p></span></p>
<div
id="AOLMsgPart_1.2_8709ee0a-ecfa-427d-903e-fb7a1b6d2a5a">
<div>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">How
do I know when it is time to replace my
batteries.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">The
total resistance in my 5 cell Zippy Compacts is
30 – 33 milli ohms (about 6 per cell).<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"> <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black">Thanks<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial","sans-serif";color:black"><br>
<br>
__________ Information from ESET Smart Security,
version of virus signature database 11748 (20150607)
__________ <br>
<br>
The message was checked by ESET Smart Security. <br>
<br>
<a moz-do-not-send="true" href="http://www.eset.com"
target="_blank">http://www.eset.com</a> <o:p></o:p></span></p>
</div>
</div>
<div id="AOLMsgPart_2_12cd000a-bcc0-4df0-b64f-8336f6193f52">
<pre style="background:white"><tt><span style="color:black">_______________________________________________</span><o:p></o:p></tt></pre>
<pre style="background:white"><tt><span style="color:black">NSRCA-discussion mailing<o:p></o:p></span></tt></pre>
<pre style="background:white"><tt><span style="color:black">list<o:p></o:p></span></tt></pre>
<pre style="background:white"><tt><span style="color:black"><a moz-do-not-send="true" href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><o:p></o:p></span></tt></pre>
<pre style="background:white"><tt><span style="color:black"><a moz-do-not-send="true" href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion" target="_blank">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></span></tt><span style="font-size:9.0pt"><o:p></o:p></span></pre>
</div>
</div>
<p class="MsoNormal"><br>
<br>
__________ Information from ESET Smart Security, version of
virus signature database 11748 (20150607) __________<br>
<br>
The message was checked by ESET Smart Security.<br>
<br>
<a moz-do-not-send="true" href="http://www.eset.com">http://www.eset.com</a><o:p></o:p></p>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
NSRCA-discussion mailing list
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a>
<a moz-do-not-send="true" class="moz-txt-link-freetext" href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></pre>
</blockquote>
<br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
NSRCA-discussion mailing list
<a class="moz-txt-link-abbreviated" href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a>
<a class="moz-txt-link-freetext" href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a></pre>
</blockquote>
<br>
</body>
</html>