XPost: alt.home.repair   
   From: bowman@montana.com   
      
   On Sun, 3 Nov 2024 21:58:11 -0700, Charlie wrote:   
      
   > What kind of panel do you think I need?   
   > And does it need some kind of control module to charge a car battery?   
      
   You can  cheap out and skip the control module if you keep an eye on the   
   voltage. A little overcharging probably won't hurt not the greatest   
   batteries. Just check the electrolyte levels and keep them up. Put a   
   blocking diode in series with the panel.   
      
   https://www.homemade-circuits.com/how-to-make-solar-battery-charger/   
      
   Some cheap circuits if you know anything about electronics. Solar panels   
   have a nice feature. They are current sources. Short them out and the   
   voltage goes to zero and the current limits to the short circuit current.   
   Obviously you want a blocking diode since shorting a lead acid battery   
   usually is a little dramatic.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)