I don't know if I'd call it a negative for you know that it will happen. Just have no indication as to when. I always turn mine off and the batteries have lasted me through many seasons. .....
Then it happens when you least expect it. For that reason, I always carry a spare. One of my buddys, has a spare taped right on the top of the battery compartment. A bit extreme perhaps but that is how he deals with the potential problem. ....
Be Safe !!!