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Unread 17-03-2002, 14:43
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: 10,785
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As to the 1 amp chargers...
They will charge a dead battery to full charge in 18 hours. (give or take an hour) Since most teams will not run their batteries fully down (since a terminal voltage of 8 volts will reset the controller) you can guess that a 1 amp charger will bring a battery back to full charge in 8-10 hours. This is good enough for overnight in the hotel room but not fast enough to recharge the same day in the pit.
For those rookie teams that have not had experience with the four amp chargers, the heatsink on the back of the charger runs hot!! Make sure it has plenty of air and nothing gets laid on top that would melt. (i.e. plastic sheet, man made fabric, carpet, etc.) In most cases the four amp chargers should be able to bring a battery up to full charge in an hour or two (say over lunch break)
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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.