[NSRCA-discussion] Maximum battery power "fade"

[Randy Forbus]

Its not going to charge right until the cells come into balance I had a pack do the same thing and my charger would go into safe charge mode until the cells came into balance, I would look at the connection from the charge leads too, they might be dirty , mine was that way take some contact cleaner and try and clean them up some. I switched over to anderson power poles and did away with deans., and my charge problems went away.

From: precisionaero at hotmail.com
To: nsrca-discussion at lists.nsrca.org
Date: Fri, 21 Jun 2013 16:26:43 -0600
Subject: [NSRCA-discussion] Maximum battery power "fade"




I have a battery question for the list, but this is for a 90mm sized EDF.  I have a 6 cell pack where the power "fades" after a few seconds of maximum thrust.  I thought it might be a cold solder, so I redid the connection with a new, better working iron I purchased recently, but it did not make a difference.  I checked the resistance per cell on the charger and two cells read 2.3, two read 2.4, one reads 2.9, and the last one 3.5.  I am not sure what is considered normal, as I don't recall my 5 cell pattern plane batteries varying so much.  So, what is normal and could this be the reason for the "fade"?  If not, any other ideas?  The other 6 cell pack I have does not have this problem, but I have not yet checked the resistance variance on it yet. 
Regards,Mike C 		 	   		  

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