Fully charged battery = 12.6vdc Recorded Battery voltage in the log 10.852vdc
That puts this quad in the air with 13.873% battery power
Expanding on this possibility.
Following from HEREI took a partially charged battery that had been stored for 5 days and put it in the P3, after switching on (unarmed) it showed 66% charged battery, voltage per cell was 3.98V on all cells except for cell#1 that was 3.99 (negligible difference) I brought up the Battery monitoring screen (to keep an eye on the battery) and to my surprise less than a minute gentle hovering (no drastic moves) into the flight the Voltage very quickly Dropped lower than it should be to around 3.58V and Yellow lined! - Note Battery is at 61% Capacity and only 1:13 minutes into the flight drops significantly Voltage Low in a very short time and stayed yellow.
It has been suggested in same thread that Percent of battery charge is based on alogrithm that uses power in (charging) vs. power out (discharging).
Follwing from HERE
It's important to monitor the battery voltage in each cell of the DJI smart battery. Be aware of the following:
1) Monitor the battery to ensure all cells maintain a similar voltage.
2) Do not allow any of the battery cells to drop below 3.3V.
3) Consider landing your Mavic when (or before) the first battery cell reaches 3.4V.
4) Your battery will shut off mid-flight if the voltage drops below 3.0V.
Following (with some clarifications) Percent vs. Voltage from HERE
100% 4.2-4.28v
90% 4.13v
80% 4.06v
70% 3.99v
60% 3.92v
50% 3.85v
40% 3.78v
30% 3.71v
20% 3.64v
10% 3.57v
From the log, ending voltages for three battery packs would put percent just above 15%.
Unless DJI chimes in, it will be hard to know what their percentage is based on.
|