Battery Storage
2. If a low battery warning appears, charge the battery until it reaches 40-60% for long-term storage.
Battery Maintenance
3. Fully charge and discharge the battery at least once every 3 months to maintain battery health...
Which drone is it? A 10 year old drone probably uses the DJI Go4 app, not DJI Fly. Download the Go4 app from DJI website - not from any appstore. When the drone is connected to your controller and phone you can update the drone firmware if you...
Some DJI drones uses LiPo, some uses Li-Ion, but as others have said they are all Lithium-Ion batteries.
The Mavic 4 uses LiNiMnCoO2 - Lithium nickel manganese cobalt oxides - which is also a Li-Ion.
The takeoff altitude (service ceiling) specification is quite conservative. For example the Mavic 3 has 6000 meters max service ceiling, but people have taken off from the top of Mt. Everest with it, and ascended to over 9000 meters above sea level.
I briefly contemplated climbing the tower, swinging hand over hand down the insulator covered "V" like a Gibbon monkey, tight-rope walking away from the tower on the transmission line at bottom center, and then balancing on the wire while...