The CHUCK of the Disco is set up to count the voltage of a lipo battery and display the % on the app when your flying. If you put 18650 Li-lon batteries in your Disco the % will not be correct . Also the cut off voltage of the lipo is 3.1v but for the 18650 Li-lon batteries is lower, a 18650 battery can go down to 2.5v but it is not recommended. If you make the changes for 18650 batteries you will get more fly time with your disco.
You need to make the following changes in the parameters.conf file.
You connect to your Disco WiFi from your computer, and then telnet 192.168.42.1
Then you edit the file with: vi /etc/parameters.conf
following are the comments that you will use:
1) telnet 192.168.42.1 then ENTER
2) mount -o remount,rw / ENTER
3) cd etc ENTER
4) vi parameters.conf ENTER
5) i ENTER
when you are done with the changes and want to save the file and exit you use the following comments:
1) you press ESC
2) :x and ENTER
DO NOT USE THE VALUES YOU SEE ON THE VIDEO USE THE FOLLOWING VALUES
#/////////////////////////////////////////////////////////////
BATTERY
BATTERY_FILTER_CO_HZ = 1.0
VBAT_MIN = 8.8
VBAT_LOW = 8.9
VBAT_SHUTDOWN = 8.3
BATTERY_PERCENTAGE_TABLE_LENGTH = 15
BATTERY_PERCENTAGE_TABLE_VOLTAGE = 8.5, 8.8, 9.5, 10, 10.73, 11.01, 11.12, 11.79, 12.03, 12.16, 12.22, 12.31, 12.44, 12.55, 12.6
BATTERY_PERCENTAGE_TABLE_PERCENTAGE = 0, 5, 10, 15, 25, 45, 55, 79, 84, 88, 91, 94, 96, 98, 100
#/////////////////////////////////////////////////////////////
SAFETY
SAFETY_GROUND_PROXIMITY_CHECK_ENABLED = true
Battery voltage below which a warning is emitted.
SAFETY_LOW_BATTERY_VOLTAGE = 9.0
Battery voltage below which a critical failure is reported.
SAFETY_CRITICAL_BATTERY_VOLTAGE = 8.5
Battery voltage above which a EMPTY BAT failure is cancelled
SAFETY_UNCRITICAL_BATTERY_VOLTAGE = 9.3
Battery voltage below which a warning is emitted.
SAFETY_LOW_BATTERY_PERCENT = 9.6
#Battery voltage below which a critical alert is emitted.
SAFETY_CRITICAL_BATTERY_PERCENT = 0
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