The MEATER Plus charger needs to stay as close as possible during your cooks so that it can stay connected to the probe and boost the signal to your phone or tablet. However, this can be tricky if you happen to be cooking in inclement weather, since moisture can damage the charger.
The best option we've found is to put the charger in a plastic bag or food storage container. This will protect it from the elements, and the plastic won't hinder the signal too much.