From: nidan.danny@gmail.com   
      
   On Saturday, 1 November 2014 03:03:33 UTC+11, minnew  wrote:   
   > Sorry if this is a trivial question, but I wish to convert my wife's   
   rechargeable sweeper into an AC plug-in device.  The (failed) battery pack   
   reads 1500 mAmp-hr (~ 1.5 Amp-hr) capacity at 15 Volts.  Obviously I need to   
   convert 120 AC to 15 DC Volts    
   but how many Amps do I need to run the device?  I realize that Amp-hr is a   
   measure of Coulombs (5400 in this case), but does that tell me what Amp draw   
   to expect from the Vacuum motor?   
   >    
   > thanks   
      
   check the nameplate, or the operation manual (if u still have it). it should   
   state the power consumption in [watts] or [VA]. divide this figure by 15 (the   
   dc voltage) and the result will be the current supply required. round up to   
   the nearest available    
   value.   
      
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