TWICE, my 1st Evo 2 pro then my second Evo 2 pro overheated and the power failed. The Drones simply shut off and fell to the ground. The flight logs show a sudden loss of data or information as the power shut off. The descent or crash wasn't recorded on both drones. I live in Florida. Temps and humidity are high. One drone had actually fused 4 pins between the battery and the aircraft before it finally shut down, mid flight. After the first crash, I started watching battery temps. After long flights, the batteries could not cool down. I got temp warnings, that simply stated , "battery overheat, performance will be limited." It didn't really tell me how serious these overheat issues can be. Be warned, Flying the EVO 2 SERIES in high heat and Humid environments in High performance or Ludicrous modes is highly dangerous. You may be warned of Lower performance, but the temperature of the battery will still rise, until, the aircraft shuts down and falls like a brick. Unfortunately, Autel did not help replace the these crashed drones or offer any significantly reduced pricing. Living in a hot humid environment is not the place to fly EVO 2 Drones. Eventually the batteries succumb to the heat and humidity and become unstable. The aircraft seems to respond by completely shutting down. If flying in high heat greater than 85 F and Humidity greater than 70% , I recommend NOT TO FLY IN "LUDICROUS" MODE. Fly slow and steady. The batteries seemed to degrade quickly (one month with 2 hours per day of flight). Then, The batteries started behaving somewhat erratically . They seemed to overheat the most as they neared 15 to 18 % power. At these moments, I watched the battery temps. They just increased and increased into the red. Then, a sudden shutdown. I hope this isn't some software battery protection problem. Maybe the fans reduce speed to save power, I don't know. Any one else experiencing strange overheat behavior in high temp, high humidity environments ?? Autel needs to emphasize this potential issue in it's documentation. IF YOU SEE YOUR BATTERY TEMPS HITTING RED, TRY TO FINDING A PLACE TO LAND ASAP. Autel won't help you replace the drone. Well, they didn't help me.