From: muratlanne@gmail.com   
      
    wrote in message   
   news:24d5ie14ifur1geikeg8atsnlehkjml4ki@4ax.com...   
   > On Sun, 7 Jul 2019 16:34:14 -0700 (PDT), Scottish Scientist   
   >  wrote:   
   >   
   >>On Sunday, 7 July 2019 22:50:11 UTC+1, ads  wrote:   
   >>   
   >   
   >>Breaks my heart to design you a system that generates so little   
   >>power. ;) LOL.   
   >   
   > Some questions for you:   
   >   
   > How far do you plan on discharging those batteries?   
   >   
   > How many days of little or no sun do your calculations include?   
   >   
   > I know that we can easily have a week or more of cloudy, rainy days   
   > in   
   > winter and my best solar panel only produces about 5% of its rated   
   > output on a rainy day.   
      
   Under those conditions I see more charging current from the PWM   
   controller than the MPPT, because the MPPT consumes more internally.   
      
   I just replaced the (11 year old) battery in my car after a single   
   accidental full discharge significantly reduced its cranking capacity   
   and increased its self-discharge. It would drop below 12.2V a week   
   after fully charging it, and the car's key-off current drain hasn't   
   changed.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)