Royal Mini3 Pro Drone Caricabatterie Portatile Mini4 Battery Manager
1 Mini3 two-way butler. Putting in 1 x 2453mAh battery + 1 x 3850mAh battery is 45+65=110 minutes. Putting 1 2453mAh battery into 1 battery is 45 minutes. Inserting 1 3850mAh battery is 65 minutes.