• Intelligent Portable Battery :You may wake up the Echo optionally whenever you want even if Echo is in standby and Echo 3 plus 2 battery base does not turn off on its own
• Compatible with Models :Battery base only for Echo 3rd gen. and Echo Plus 2nd gen, Echo plus 2 battery base echo 3 battery（ Not for Echo 2nd gen. and NOT for Echo Plus 1st gen. ）, any product problems pls get in touch with our member by e-mails
• Special Functionality:The battery not only work perfectly for the echo, but also a battery that supports 5V/2A USB output, suitable for your cellphone,ipad etc (Not include USB cable)
• Intelligent Battery Management System:Once it goes into a lower power and flashing red light for reminding user of charging it timely , if NOT, the battery will also not be damaged by access into sleep mode automatically,it could be protected by itself
• Charging Skill:Automatically Power on the Echo by connected to the DC charging connector later or charging your cellphone by connected to USB cable, Recharging the battery base by the echo's original power adapter with 18V/1.6A ( Not include power AC adapter)