I've counted something like 4 reported "dropped from the sky" cold weather induced battery failures and Inspire deaths in just the last 3 days. All using FW 1.6. All using fairly new battery packs (<20 cycles apparently), all pre-warmed to 20C or higher. All fully charged before flight. These guys did everything right. Yet. Battery death occurred and their aircrafts dropped from the sky without warning. Two examples below. Not good. Discuss.