Manual

36 Chapter 3 Smart Battery
EVO Max 4T User Manual
3.3 Battery Functions
3.3.1 Battery Self-Heating Function
In a low temperature environment, EVO Max 4T supports battery self-heating function, as
shown in Table 3-6.
Table 3-6 Battery Self-Heating
Name Description
Battery self-heating
(Connected to aircraft and in
low temperature state)
When batteries are installed in the aircraft and the battery
power is turned on, if the battery temperature is lower
than 15°C, the battery self-heating function will be
activated. When the aircraft takes off, the self-heating
function of the battery will be automatically turned off.
Battery self-heating
(When not connected to the
aircraft, it needs to be started
manually)
If the battery is not connected to the aircraft, short press
the power button and then long press the power button
for 3 seconds to activate the battery self-heating function
to keep the battery temperature between 15°C and 20°C
for 10 minutes.
Exit the battery self-heating
function
During the battery self-heating process, if you short press
the power button, then long press the power button for 3
seconds, you can exit the battery self-heating function.
When the battery is in the state of self-heating and heat preservation, the blinking status of
the battery power indicator is shown in Table 3-7.
Table 3-7 Battery level indicator status
No. Description
1 LED1, LED3 and LED2, LED4 flash alternately in groups, indicating that it is heating.
2
The 4 LEDs flash at the same time, indicating that it has entered the heat
preservation state.
: Green Light : Green Light Flashing : Off

When the battery temperature is lower than -10°C, the aircraft will not be allowed to take
off. It is recommended to wait until the self-heating is over before operating.

When the ambient temperature of the battery is lower than 5°C, the internal resistance of
the battery will increase and the voltage will drop suddenly due to the low temperature,
which will reduce the usable capacity of the battery and reduce the battery life. In a low
temperature environment, please make sure to fully charge the battery before using it.

If the power is lower than 40%, it is not recommended to take off. When the battery
power is low, it is difficult to activate the battery, which will reduce the safety of flight.