Loft Portable Battery Base review: Take your Google Home anywhere with this easy-to-use accessory

Google Home ($129 at the Google Play Store) is one of our favorite smart speakers, but its dependence on power from a wall outlet limits its mobility. Ninety7's Loft aims to solve that problem: It's a battery that attaches to your existing Google Home to provide on-the-go power, so you can easily take it with you from room to room, or into the garage or yard--or even on the road if you want to use your Google Home as just a Bluetooth speaker.