Ok so this is the second winter i have had my 2014 ram 2500. The first winter i had zero problems with it starting in the cold weather. Its 25degrees outside right now and my truck refuses to start. I let the grid heater turn on and it lights up for a second then the grid heater light goes away like there isn't enough power to keep it going. If i try to start then the truck just clicks like it has no battery power. Jumping doesn't help the truck start either. If i let it sit and try to start it without waiting for the grid heater most of the time it starts but sounds like the battery is about out of juice when it does. I have both batteries checked and they both are good. Almost perfect tbh. Could my grid heater be shot? I have 112k miles on it and the emissions was completely swapped out for new at 98k.

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