From: do804@torfree.net   
      
   How about the 18650 in series with a Si diode, such as   
   a 1N4001 ?  The 0.6V drop should reduce the voltage   
   sufficient to be considered safe.   
      
   David   
      
   ---   
   Andy wrote:   
   > I have a door bell that uses 2 aa batteries.   
   >   
   > Would a 18650 work in such an application.   
   >   
   > I don't know if 4.1 volts would be too high.   
   >   
   > Thanks,   
   >          Andy   
      
   ---   
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