aerobat
lvl.1
Sweden
Offline
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Hello all!
I'm new to DJI Inspire, but I have 40 years in RC modeling and 15 years of experience of LiPo batteries.
I have been a competition pilot and i do not like unsafe battery behaviorism. In competition RC planes we dual batteries (for RC).
LiPo voltage VS. Capacity
What I wanted to get at is that in RC we ALWAYS use voltage to determine remaining capacity. The voltage is, as most likely already know, proportional to remaining capacity between 3,6V (empty) and 4,2V (full) per cell.
This means that volt/capacity can be measured as: (per cell)
4,2V = 100%
4,03V = 76%
3,86V = 52%
3,83V = 42%
3,79V = 30%
3,7V = 11%
3,6V = 0%
approx 3,8V = storage
This measurement works in 99,99% of cases. Only known cases I know where method fails is if a cell suddenly breaks.
DJI Inspire battery management
Then I see that Inspires battery management seems to use a combination of voltage and the amount of energy (mAh) that have been charged into the battery (last charge).
Can anybode explain in detail how DJI manages batteries?
So, my next question is if anyone has checked all cells voltage and "estimated" remaining capacity when problems occurs?
It would be very interesting to see this if possible both before and after capacity drop.
For DJI future development I would like to see a small extra battery option (1 min flight) for safety when flying where only GTH landing is safe. Btw, I also had this problem once. I flew a automated mission with Litchi Android app and suddenly it just landed:-( Very scary. Fortunately it was a demo to a friend at the RC field. But over water I would be lost.
//Ulf
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Remaining capacity VS. Voltage
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