XPost: alt.comp.os.windows-11   
   From: legg@nospam.magma.ca   
      
   On Mon, 1 Dec 2025 12:56:42 +0100, "Carlos E.R."   
    wrote:   
      
   >On 2025-12-01 03:04, Paul wrote:   
   >> On Sun, 11/30/2025 7:42 PM, micky wrote:   
   >   
   >   
   >>   
   >> The person in the story, may have a powerwall too.   
   >>   
   >> The individual in the story, seems to be on a tear, with regard   
   >> to free energy and running his own "electric company". The installation   
   >> isn't big enough to be self-sufficient during the winter.   
   >> The powerwall charges off mains, instead of using the solar panels.   
   >> The powerwall comes with an interface for solar panels, a limited   
   >> number of chains of them. But doing an equivalent using used laptop   
   >> batteries is a lot cheaper.   
   >   
   >But used batteries, besides holding little charge, can lose their charge   
   >fast   
      
   You have to grade the batteries before re-use.   
      
   Then you deploy them in mixed/matched groups of AH ratings.   
   You could aim for about 80% of label capacity, for first   
   commissioning, at < 25% of the initial material cost (new).   
   Batteries are rarely retired due to their own age - more   
   frequently it's the device, connectors, software or dumb   
   user at fault.   
      
   Batteries with higher AH will do more work in the parallel   
   block, and age more quickly, but the mixed blocks will show   
   similar properties, on avarage. That is the aim.   
      
   Expense is in labour, which for DIY projects, is moot.   
      
   RL   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)