good info, I did not know that. a simple FYI, my rc helicopters use LION's, generally 6 cell, (22.2V), about 3000mah. after a mild flight I have checked the temp to be in the 140 degree F range. I have never had a heat related issue with them. They are not enclosed in a container like the evic, but I would certainly not see around 100+ degrees being any type of issue.