From: wolverine01@charter.net   
      
   On 2/21/2025 8:49 AM, Ted Heise wrote:   
   > Hi all,   
   >   
   > Thinking of trading in my Acadia for a new one and the sales rep   
   > mentioned something about it having a larger alternator.  That   
   > make me just idly wonder if it's possible to get a factory   
   > installed system that would supply enough power at the 7-pin   
   > connector to recharge a LiIon battery while towing.   
      
   I am about 99.9% sure the answer to your question is no, Ted.   
   Still a good idea to get the big alternator, and maybe even a double   
   battery setup.   
   The main problem is the wire size on the 7-pin plug.  On my TOAD, I   
   installed a power plug so I could use a 12 Gauge wire that was always   
   on, but that was only for trying to keep the battery on the TOAD up to   
   run the braking system.  This would not be enough to charge depleted LI   
   batteries.   
      
   What you need is very heavy gauge wire from the battery to the back of   
   the tow vehicle with a plug for a DC-DC charger if you really want the   
   tow vehicle to charge the trailer battery.   
      
      
      
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