Get a simple battery kill switch. This will save you lots of headache.

Typically on newer cars, there is always some feature drawing power. Or if you have accessories, like anything Bluetooth or app connected, that will also draw power. If you don’t start the car for a few days to a week, the battery will die.

So, if you don’t run the car for more that a few days at a time, invest a kill switch. If you’re really handy, you can wire/mount it hidden in the cab so you don’t have to pop the hood everytime you start it.

It’s also a good anti theft deterrent as a crook is not going to take more than 3-5min to try and start your car.

Once batteries die, they might not be the same again. Sealed batteries will need to be replaced if they don’t hold a charge, unsealed batteries have a cap you can open to add battery acid if it’s low.