When it comes to hunting and electronics I find two types of people. I always check my GPS, rangefinder, Spot, radios, etc to make sure everything is in working order and then replace with new batteries before heading to camp. Every year someone in camp brings their radios, GPS, or some electronic gizmo that has three-year-old dead batteries with them to camp to find their electronics not working and forget the spare batteries. Take a few minutes to look over your gear before you head off to camp to make sure its all in working order and replace with new batteries so you don’t run into any snags during your hunt. And don’t forget extra batteries for the items that you will use up while hunting/camping.