Why choose Blanou battery base? 1 Get rid of shackles from charging cable, Echo dot 3rd gen and mini 2 battery of this product 5200 mAh can be used for 8 hours (test volume 80%) 2 Blanou battery base can protect your dot 3 or mini 2 smart speaker very well. It uses 65% surround design and 2 practical silicone anti-skid shock-absorbing gasket. 3 Blanou brand promises that product will be renewed for user within 1 year if it is not artificially damaged Product parameter Name: Blanou dot 3 battery base Capacity: 5200 mAh Charging time: 3.5 hours Use time: 8 hours Standby time: 25 hours Whether to include a charging cable: not included Notice dot3 smart speaker needs to have power to support standby function, please keep the base in the charged state or charging state 2 For your echo dot 3 smart speaker to work normally, please do not leave WIFI coverage