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Unread 01-10-2014, 11:28
Unsung FIRST Hero
Al Skierkiewicz Al Skierkiewicz is offline
Broadcast Eng/Chief Robot Inspector
AKA: Big Al WFFA 2005
FRC #0111 (WildStang)
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Re: Which Battery to Buy?

Andrew,
I can't give you any ideas on your problem at the moment. The failed cell indicator may be coming from the test measurement as it compares to a wet cell auto battery. The tester uses the conductance test to make these determinations. The doc I saw specifically relates the conductance to the available plate area. As a battery ages, sulfation and other things affect how much plate area is exposed to the electrolyte. This is proportional to the available current. The less area, the less available current.
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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.