Thread: what if I use household 9v batteries?
View Single Post
  #2   Spotlight this post!  
Unread 03-04-2010, 16:14
Jeffy's Avatar
Jeffy Jeffy is offline
Retired, for now
AKA: Jeff Gier
FRC #2410 (Metal Mustang Robotics) #159 (Alpine Robotics)
Team Role: College Student
  
Join Date: Mar 2008
Rookie Year: 2008
Location: Fort Collins
Posts: 523
Jeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant futureJeffy has a brilliant future
Re: what if I use household 9v batteries?
Size matters for the capacity of the battery. Batteries are rated on an amp/hour basis. A 9v smoke detector batter is much below 200 miliamp/hours.

Also batteries have a peak amperage that they can give off in an instant. This peak amperage depends greatly on the capacity of the battery. A 9v probably couldn't even give enough amperage burst to power an unloaded cim motor.

So, unless you wire about 100-9 volts in parallel, then I wouldn't use them for anything more than they are designed for.
__________________
Metal Mustang Robotics 2410 (2008-2011)
2008 STL Rookie All-Star
2010 GKC Finalists
2010 OKC Champions
Alpine Robotics 159 (2012-)
2012 CO Finalists

700 miles from home, 2 miles from FRC. Life is good.
Last edited by Jeffy : 03-04-2010 at 19:17. Reason: Brain mush