2Flatulent
 lvl.1
United States
Offline
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I created a spreadsheet that showed my flight time, ambient temperature and battery temperature. I have an extra battery that was purchased about a week after the P3A. One thing I noticed with both batteries is the average temperature rise of both batteries when operated for 15 minutes or more was between 40 and 50 degrees F. So on a 95 degree day the battery could reach temperatures approaching 145 F. On cooler 70 degree days the battery temperature may hit 120 F.
The aircraft has an operating temperature of 0 a 40 C or 32 - 104 F. Theoretically, based on the above information the battery temperatures may go as high as 154 F. If you research any LiPo battery information on the web anything over 140 F is said to cause the battery to start deteriorating.
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