From: clsnowyowl@gmail.com   
      
   On Friday, February 3, 2023 at 4:49:25 PM UTC-6, Michael Trew wrote:   
   > On 1/30/2023 16:42, Carlos E.R. wrote:   
   > > On 2023-01-19 02:01, Rod Speed wrote:   
   > >> On Thu, 19 Jan 2023 04:54:10 +1100, John Robertson    
   > >> wrote:   
   > >>>   
   > >>> After the engine starts, then disconnect the negative lead that is   
   > >>> AWAY FROM THE BATTERY so any spark created at the disconnect point is   
   > >>> unlikely to cause the battery to explode if hydrogen gas was created.   
   > >>   
   > >> No, because the battery doesn't gas unless it is being charged when   
   > >> fully charged already and that won't be happening with either battery.   
   > >   
   > > The "bad" battery will start charging when connected, and there will be   
   > > no current limiting.   
   > The last time I had a really flat battery, and jumping it didn't work   
   > (perhaps the cables weren't heavy enough gauge), I started it with   
   > another battery installed (cables semi-tight pushed-on)... then with the   
   > alternator keeping it going, I disconnected that battery, and hooked up   
   > the flat battery. You could instantly hear the engine bog down from the   
   > alternator kicking into high-gear. This was a 1960's car, BTW, with a   
   > modern 12v battery. Perhaps this isn't the hottest idea with a new car   
   > using expensive electronics, but it works fine on older rigs with a good   
   > alternator.   
      
   Remember, this can be done only if what this man said is true and/or the   
   voltage regulation circuitry can handle it. I would try using a load resistor   
   Run to ground at the base of the circuit to handle the load and to prevent   
   overload. The resistor should be of adequate size (1/4 watt at so many   
   mega ohms) to absorb the energy.   
      
   Good Luck,   
      
   Charles Lucas   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)