Version 2.06 February 2017
Page 18 of 44
We can increase the speed of the discharge cycle, if we turn on BlueTooth
module, set up brightness of LCD to maximum, turn off screen fade.
After this procedure NANO
3
has measured its battery capacity and with the next charge, the
indication will be more accurate.
Calibration of battery is performed during production of nano. In case that calibration data
is wrong, calibration cycle is necessary for correct indication of the charge level.
If charge level does not shows correct value, comparing to the battery voltage,
battery calibration cycle is necessary to be done. Example: Charge level: 99% and
measured voltage 3.6V.
4.5 Powering off
Press the rocker button for a long time and the red LED and the adjacent green LEDs will
start blinking. Once you see the LEDs blinking you may release the button and the unit will
power off.
4.6 Security void
When the security (secret key) is lost at power on, the red light will be on and the remaining
four green LEDs will start blinking and “DIGITAL SIGNATURE FAILED” message will appear
on the screen. To continue press or move the rocker button for a longer period. The NANO
3
will be fully functional, however the flight will not be signed.
In order to produce the IGC-certified files, the NANO
3
flight recorder must be
returned to the dealer or manufacturer for resealing.
4.7 Charging battery
The battery will be charged when the NANO
3
is connected to the external power through a
usb port. It can be charged from a wall adapter, or directly from a PC or from the NANO
3
power cable.
If you want to charge faster, then you must connect the NANO
3
to a power supply, wait for it
to boot up, then press the rocker button to switch the unit off. In this mode all the NANO
3
functions (GPS, Bluetooth, Memory) are turned off, this will increase the charging speed. In
this mode the NANO
3
can be fully charged in approximately 5 hours. The LCD screen is still
on, but the backlight is off. It is still possible to monitor the level of charge. The level of
charge is also visible via the LED indicators. More information on charge level and LED
indication in chapter 4.4.
Sometimes it may appear that the NANO3 battery level when connected to a
charger, looks full. When you then disconnect the power, the battery level drops
to 90%. This is normal as the battery level indication is different when the
charger is connected and when it is disconnected. To really fully charge the
Nano3, please continue charging for a few hours. In fast charge this time will be
shorter. Charge current must drop close to 0 or you will see indication FULL.