Storage
Lithium batteries should not be stored fully charged or fully discharged; many manufacturers recommend a partial charge for storage.
Maintenance
Maintenance
Most failures are related to batteries, propellers and outdated firmware. Here is what to check and how, with one caveat: take exact values and intervals from your model's manual.
Batteries
The most sensitive component of a drone.
Charging
Charge with the original charger on a non-flammable surface and do not leave it unattended.
Signs of wear
Swelling, heating, rapid voltage drop. A swollen battery must not be used.
Propellers and mechanics
Pre-flight inspection
Chips, cracks and deformation are a reason to replace a propeller, not to "use it up".
Mounts and motors
Check that the propellers are securely fastened and that the motors spin freely, without unusual noises.
Firmware and calibration
Updates
Update firmware at home, not at the flying site; read the release notes.
Calibration
Calibrate the compass and sensors according to the manufacturer's instructions — for example, after transporting the drone a long distance, if the app requires it.
Key terms
- Storage voltage
- A partial charge level recommended for storing a lithium battery; the exact value is specified by the manufacturer.
- Charge cycles
- The number of full charge–discharge cycles; capacity gradually decreases.
Questions about maintenance
Can I leave a battery charged for a month?
It is usually not recommended: many "smart" batteries discharge themselves to storage level, but check how your model behaves.
How often should propellers be replaced?
Whenever there is any visible damage; some manufacturers specify scheduled replacement intervals.
Sources
- Manufacturers' manuals for batteries and drones
- Guidelines for the safe handling of lithium batteries
The advice on this site does not replace the manufacturer's manual: models differ considerably. Flight rules depend on the country and region and change over time, so check them with the aviation authorities before every season.