DJI has released new firmware updates for users of TB50 and TB55 batteries which address the small number of reports of Matrice 200 Series drones experiencing early Return-to-Home (RTH) or Automatic Landing (AL).
These cases are not due to product performance issues, but are false alarms triggered by conservative measures DJI implemented last month to prevent any further potential of M200 series drones experiencing loss of power mid-flight.
DJI continues a thorough investigation of the root cause of the issue until it is fully resolved.
DJI says that this new firmware update (v01.02.0301) further improves the algorithm accuracy of the battery-management system to enhance
For TB55 batteries used with M200 series drones, the firmware update will impose these new battery safeguards:
For TB50 batteries used with M200 series drones, the firmware update will impose this new battery safeguard:
Additional battery heating before take-off
The additional heating will prevent batteries from turning off unexpectedly at low temperatures.
The temperature of both batteries must be 16°C (61°F) or higher before the aircraft can take off. This is because a battery with low temperature has a higher internal resistance, which causes lower voltage than in warmer conditions.
A battery with low voltage will provide a lower level of power to the drone, and hence impose higher risk of a power loss.
Flight times vary depending on age of batteries, temperature of the environment, altitude or payload.
Be aware of locking your drone
Pilots who are using drones of both the DJI M200 series and the DJI Inspire 2 with TB50 batteries may continue to receive an 'inconsistent firmware' notification when using batteries updated with different firmware versions. This may lock the drone.
DJI advises that pilots use batteries upgraded with the same firmware until a new firmware update is released in January.
After further testing and simulations, DJI decided not to issue a scheduled temporary firmware update for the Inspire 2 this month as there is no indication of flight safety being compromised.
Using batteries upgraded with the same firmware will solve this compatibility issue, in addition to improving
As with all Lithium batteries, there are several factors that impact the usability of your TB50 and TB55 batteries, including external variables such as weather and altitude where your flight takes place, as well as factors in your control such as storage and handling methods.
Tips for drone users
In the rare case that a pilot experiences early trigger of RTH or AL:
- When a drone starts Smart RTH, pilots can interrupt and stop RTH by pressing the X on the screen.
- When a drone begins AL, pilots can still steer the drone using the joystick to help find the safest landing location. Pushing up the throttle can also slow or counteract the descending aircraft.
- It is important to note that these responses are not caused by any hardware fault. In the rare case that early RTH or AL is triggered, it is due to the risk mitigation strategy programmed into DJI's flight controller.
Battery taking a
- This is caused by S1. DJI suggests pilots pre-heat their batteries or keep them at room temperature (about 16°C/61°F) before flying outdoors to minimise the risk of flight disruption.
Please read DJI's Intelligent Flight Battery Safety Guidelines and follow its updated user guidelines to help minimise potential disruption to your operations.
If you believe you may have experienced a related power problem involving the TB50 or TB55 battery, please contact DJI customer service at dji.com/support to report the issue.
In October, there were reports that a small number of TB50 and TB55 batteries had shown incorrect power levels, leading to loss of power mid-flight. Customers were urged to fly with caution when using TB50 and TB55 batteries in drones. DJI said it was working round the clock to find a solution.
At the time, the CAA released an initial safety notice, to highlight the requirement for the SUA operator and/or remote pilot to be reasonably satisfied that flights could be safely made, restrict overflight of people at any height, to temporarily limit the scope of certain operational authorisations issued to operators of the affected SUA, and to provide updated information regarding battery management requirements while the affected SUA were airborne.
Last month, DJI issued firmware updates for users of TB50 and TB55 batteries, to enhance the battery-management system and optimise power supply during flight.
In the wake of this, the CAA updated the safety notice to lift restrictions for operators and pilots of the affected drones who can confirm that the firmware updates have been successfully installed.
Now, the Chinese-based technology giant has issued its latest firmware updates.