<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:10pt"><div>I flew the 15C's last year (about 60 flights per pack) and am still flying them this year. This year I added two 20C packs to the mix. I've got perhaps 25 flights each on the 20C's. Can't see a lot of difference between them in flight. The older 15C IR's (with probably 80+ flights on each) are in the 4-5 mohm range. The newer 20C's are in the 2-3 mohm range. I expect that the lighter weight of the 15C's compensates for their higher IR's. The current 20C's are not just 10 grams heavier than the 15C's. Verne's numbers (587 vs 622 grams) are right on the money. This is all on FAI P11 at about 65 amps max. <br><br>For me the choice comes down to weight. The lighter weight seems a bit better trade off (in P11). In Masters, or if I were pulling 75 amps, I
would probably go for the 20C's in the hope of better longevity. Though since I haven't yet even thought about retiring the 15C's, I really don't have a longevity comparison.<br><br>Ed<br></div><div style="font-family: arial,helvetica,sans-serif; font-size: 10pt;"><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">From:</span></b> colin chariandy <cchariandy@yahoo.ca><br><b><span style="font-weight: bold;">To:</span></b> NSRCA Mailing List <nsrca-discussion@lists.nsrca.org><br><b><span style="font-weight: bold;">Sent:</span></b> Tue, August 10, 2010 2:14:17 PM<br><b><span style="font-weight: bold;">Subject:</span></b> [NSRCA-discussion] 15C vs 20C Flightmax batteries<br></font><br>
<table border="0" cellpadding="0" cellspacing="0"><tbody><tr><td style="font: inherit;" valign="top"><div>I noticed that most are running the 15C 5000 packs but these seem to be in stock infrequently. Can anyone comment on the performace of the 20C 5000s from Flightmax. </div>
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<div>What's the weight, performance and longevity compared to the 15Cs.</div>
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<div>I know there must be reasons that the 15Cs are more popular....just not sure what they are. I would have though the 20Cs would be better as someone reported that they are only 10gms more than the 15Cs and would provide a bit more power. Additionally I noticed the TPs are 20C...not 15C.</div>
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<div>I'm new to the e-scene...so please ignore the ignorance.</div>
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<div>Colin.</div></td></tr></tbody></table><br></div></div>
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