• Place the charging hub on a at and stable surface when in use. Make sure the
device is properly insulated to prevent re hazards.
• DO NOT touch the metal terminals on the battery ports. Clean the metal
terminals with a clean, dry cloth if there is any noticeable buildup.
Battery Level LEDs
The table below shows the battery level during charging.
Blinking Pattern Battery Level
0-50%
51-75%
76-99%
100%
Battery Protection Mechanisms
The battery level LEDs can display battery protection notications triggered by abnormal
charging conditions.
LEDs Blinking Pattern Status
LED2 blinks twice per second Overcurrent detected
LED2 blinks three times per second Short circuit detected
LED3 blinks twice per second Overcharge detected
LED3 blinks three times per second Over-voltage charger detected
LED4 blinks twice per second Charging temperature is too low
LED4 blinks three times per second Charging temperature is too high
If any of the battery protection mechanisms are activated, unplug the charger, and plug it
in again to resume charging. If the charging temperature is abnormal, wait for it to return
to normal. The battery will automatically resume charging without the need to unplug
and plug in the charger again.
4.8 Aircraft RTK
The built-in RTK module of the aircraft can withstand strong magnetic interference from
metal structures and high-voltage lines, ensuring safe and stable ight. When used with
DJI Matrice 4 Series User Manual
© 2025 DJI All Rights Reserved. 35