Back in the early 2000s, when people were shedding Genesis radios like the HT600, MT1K, etc, I still used them for hammy stuff. I once left a VHF HT600 outside when working on my CATV demarc (Charter cable were run by monkeys back then). I forgot about the radio. It laid outside in a Georgia winter with rain, sleet, snow, then spring. My landscaping crew found in that following July. Despite looking like it had been in the bottom of a mud pit, after changing the battery, it fired right up and worked. Dead on frequency and great audio. Wiped it down good with a few Clorox wipes, put it back on the shelf. The 1993 date code OEM battery did not survive the being left out that long though.