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   alt.electronics      Electronics design, repair, worship, etc      7,706 messages   

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   Message 6,943 of 7,706   
   Mr Macaw to All   
   Resistor in drill battery   
   09 Jan 16 15:59:18   
   
   XPost: alt.binaries.chatter   
   From: no@spam.com   
      
   I've seen inside drill batteries before (NiCad ones) and there's usually just   
   three terminals to the pack, -ve, +ve, and one for the temperature sensor.    
   But this one has a 4th pin, which is connected to the -ve of the batteries via   
   a 10K resistor.  What    
   is its purpose?   
      
   https://www.dropbox.com/s/1np3y4ubr4lwz01/Battery%20connector.jpg?dl=0&s=sl   
      
   Bottom left large pin is connected to -ve of cells and one end of the   
   temperature sensor (a little black blob) and one end of the 10K resistor.   
   Right large pin is connected to +ve of cells.   
   Top left large pin is connected to the other end of the temperature sensor.   
   Small pin is connected to the other end of the 10K resistor.   
      
   I don't have access to the charger for this pack, I only bought this pack to   
   take the cells out to replace them in my own battery pack, as this one was   
   half the price.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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