Wirelessly charge (4th Gen): Mission Cables Portable Battery Base Staff Pick Bring your Amazon Echo (4th Gen) from room to room without constantly plugging it in, thanks to this portable battery pack. It will supply consistent power to your device for up to five hours. Though it's only compatible with the latest Echo, the white-on-white setup looks surprisingly like Spaceship Earth at Epcot in Walt Disney World!$40 at Amazon Echo everywhere (3rd Gen): Mission Cables Portable Battery Base This portable battery base allows you to use your Echo (3rd Gen) or Echo Plus (2nd Gen) wirelessly for up to five hours. It's great for playing music at parties or events where you don't have access to outlets. On the back, you'll find a USB port, DC input port, DC output cable, and LED battery life indicators.$34 at Amazon