John Jones Ii wrote in a message to Cathy Hettinger:
 JJI> ...but if you have noticed almost all charge controllers dump 
 JJI> excessive energy to these devices in order to not over charge 
 JJI> batteries. Spilling the power over into a waste sink. 
Just curious,  what is the source of this info?  Seems to me that there would 
be other ways to deal with it...
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