BuzzCut
lvl.4
United States
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ChopSticks Posted at 2017-2-8 08:46
Ugh... if they can fail at 140F not sure how confident I am about these batteries anymore, here are the results:
Batteries have been in my apartment all day and once fired up read:
Good test - love how you scaled it with time.
Were you measuring from the app or with a thermometer? I'm not sure I trust the app to be completely accurate and may be over-estimating the temps. One way to check... get it in the air and fly it just long enough to get a stable temp reading, then land it, take the battery off and shoot the underside of the battery. It may be that when the device says the temp is 'x' that the thermometer reads 'x-20%'. Worth checking.
I'd ask a mod to weigh in regarding expected temps to experience failure with this particular pack.
Drifting is possible and expected in certain circumstances. With regard to drifting, my guess is that you didn't have (or at some point lost) GPS lock since you were indoors, and either couldn't get VPS lock because of light conditions or lack of a pattern on the floor, thus went into ATTI mode. This is common and is one of the reasons for all of the caveats around flying indoors. More important with Tripod mode, because if the craft suddenly switches to normal mode it can react much faster than you were expecting. A bunch of good threads on this which may be worth a look.
Finally, can you get access to another battery to compare, even if somebody can lend you one?
Edit: Best Buy is showing batteries can be delivered by Feb 16. Not sure when you're trip is... or since it's a month long maybe get a battery shipped to your destination? Just a thought.
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