From: muratlanne@gmail.com   
      
   "Jim Wilkins"  wrote in message news:ron4lh$5fc$1@dont-email.me...   
   ...   
   The graph labeled   
   SBM Range - Available capacity after constant voltage charge 1.40 VPC [Volts   
   Per Cell)] at + 20C (+ 68F)   
   may reveal an open-loop charging method you could use, if you have enough   
   Amp-hour capacity to compensate for the reduced charge level.   
      
   ---------------------------   
      
   The Waterpik I just repaired uses two AA NiMH cells in series, float-charged   
   with 3VAC through a series diode. I didn't want to recommend such a simple   
   unregulated charging circuit until I had seen it used in a product.   
      
   It's a slow charge, perhaps adequate for emergency backup but not daily deep   
   cycling. In my home solar battery backup system the fast charge to the float   
   voltage is automatic while higher voltage acceptance and equalizing charges   
   are manual.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)