From: jasen@xnet.co.nz   
      
   On 2010-02-01, mark krawczuk  wrote:   
   > hi, any one got any ideas on how to charge a 12 v sla from a cars 12 vdc   
   > supply ?   
   > i suppose a boost converter circuit to get the voltage up ?   
   > all i need is to charge the 12 vdc sla for a torch. i want to leave it   
   > pretty well connected up permanetly, so its always charged, ready to go ,.   
   > any schematics , links etc....   
   >   
   > thanks.   
   > mark k   
      
   Gelled lead-acid operate at pretty much the same voltage as wet lead-acid.   
   I reckon you could just connect it in parallel to the main   
   battery while the engine is running.   
      
      
      
      
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