Huginn Kenningar
Captain
Flight distance : 49635259 ft
Spain
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Don't use the hub as a power bank, you don't want to waste battery cycles charging your phone, just buy a dedicated powerbank, they are inexpensive compared to the price of a single mini 2 battery. The batteries will discharge/hibernate automatically when not in use.
If you plan not to use the drone in a while, leave the batteries at aprox 30% and check them every 3 months or so.
The charging hub used as a power bank cannot discharge the batteries under 3 volts, 0% in the hub is not really 0%, is 10% or so. When the batteries reach close to 3 volts they hibernate to prevent damage from low voltage.
Only midflight you can discharge the batteries to aprox real 0%, but still not 0%. Allways land before 20%, 0-20% is just for emergencies, try to land at 30% and just swap batteries.
You can see that info in the hub and battery instructions here: https://www.dji.com/es/mini-2/downloads
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