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spark drone fell vertically , the battery mysteriously turned off.
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<blockquote data-quote="SPark_South_Oz" data-source="post: 122763" data-attributes="member: 17032"><p>Battery level 58% on take off too, not good to do that as voltage can be very incorrect, EXPECIALLY if self discharge mode was in place from storage.</p><p>It can lead to very rapid voltage drop and damage to the battery if done too often.</p><p></p><p>Battery health dropped within 5 seconds to a level considered avg, and another 7 seconds down to low, critical in another 9 seconds.</p><p></p><p></p><p></p><p>That's my guess, it had self discharged to 58% and the OP flew without charging.</p><p>Just wanted a few photos and 58% from storage SEEMED to be enough for that.</p><p>If it had been flown with from fully charged with another flight shortly before this one, then voltages are more reliable.</p><p></p><p>If the battery was used from fully charged before this flight, then you flew again from 58%, then the battery is suspect, charge it up fully and test in a safe place where you can land quickly if needed.</p><p></p><p>I suspect though in this case flying from self discharge level was the reason for this, so fully charging again to test is recommended.</p><p>It should be ok, and afterwards it will self discharge to the usual % after whatever days it's set to do this.</p></blockquote><p></p>
[QUOTE="SPark_South_Oz, post: 122763, member: 17032"] Battery level 58% on take off too, not good to do that as voltage can be very incorrect, EXPECIALLY if self discharge mode was in place from storage. It can lead to very rapid voltage drop and damage to the battery if done too often. Battery health dropped within 5 seconds to a level considered avg, and another 7 seconds down to low, critical in another 9 seconds. That's my guess, it had self discharged to 58% and the OP flew without charging. Just wanted a few photos and 58% from storage SEEMED to be enough for that. If it had been flown with from fully charged with another flight shortly before this one, then voltages are more reliable. If the battery was used from fully charged before this flight, then you flew again from 58%, then the battery is suspect, charge it up fully and test in a safe place where you can land quickly if needed. I suspect though in this case flying from self discharge level was the reason for this, so fully charging again to test is recommended. It should be ok, and afterwards it will self discharge to the usual % after whatever days it's set to do this. [/QUOTE]
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spark drone fell vertically , the battery mysteriously turned off.