This is quite an interesting topic as DJI is putting pilots between a rock and a hard place by asking them to discharge their LiPos way below the 25% threshold (tip #4). The reason this is necessary for DJI batteries is because of the difficulties in determining actual remaining capacity (deep dive #3). As a battery is used, its chemistry and its behaviour changes and the calculations regarding % capacity remaining that were valid when the battery was new begin getting inaccurate.
To overcome this DJI asks you to discharge the battery all the way down and then charge fully. In the process the battery counts how many mah are put back into the battery and recalibrates its calculations.
So, on the one hand discharging will affect your battery's life and performance and on the other hand not discharging will get your capacity indications wrong and won't let you enjoy the battery to its fullest. Rock and hard place.
Additionally, discharing the battery until it auto-shuts off means wearing your precious electronics, motors and ESCs and spending time hovering or just waiting. For zero wear and optimal cycling discharge use a dedicated discharger such as the
Phantom Angel.