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Unread 11-01-2011, 13:13
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
Team Role: Engineer
 
Join Date: Jun 2001
Rookie Year: 1996
Location: Wheeling, IL
Posts: 10,766
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Re: good way to keep spare batteries topped off??

Since someone has posted about using the clips to attach to the Anderson plugs, I feel I need to address that for two reasons. The first is that it is impossible not to scratch the surface of the contact using this method. The scratches reduce the effective contact area to a fraction of what is needed. The result is a high resistance contact that is prone to heating. The heat can reach a point where the connector will actually melt and burns are also possible.
The second, is not as obvious. The clips are now connected to a battery that is capable of producing currents high enough to weld. If they were to short together not only would this current flow but a high risk of battery damage or fire could result. Do not use the clips connected to the Anderson plug contacts to charge batteries.
If I see this at an event, I will remind you. The Anderson plug with contacts is listed for $3.50 on the AndyMark site. Pretty cheap insurance considering.
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Good Luck All. Learn something new, everyday!
Al
WB9UVJ
www.wildstang.org
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Storming the Tower since 1996.

Last edited by Al Skierkiewicz : 11-01-2011 at 13:56.