XPost: alt.engineering.electrical   
   From: tw@dionic.net   
      
   Sicilian Dragon    
     wibbled on Saturday 03 April 2010 13:55   
      
   >         I found a 15 AMP adaptor that converts 220 V AC from mains into 12   
   > DC current at a shop. My question is will this adaptor be able to charge a   
   > 140 AH 12 V battery? The shopkeeper doesn't know anything about it. I'm   
   > not concerned about over charging or anything like that just will it   
   > charge it? My understanding is that the voltage from a charger should be   
   > slightly higher than 12 V if it is to be able to charge a battery of 12   
   > V??   
   >   
   >   
   >   
   > --- news://freenews.netfront.net/ - complaints: news@netfront.net ---   
      
   Lead acid car/truck battery?   
      
   If so, those are typically charged to around 14.5V give or take, so you need   
   a little higher open circuit voltage to succeed.   
      
   How powerful is the "adaptor" (eg wattage, VA or output current rating)?   
      
      
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