Doblet | 147 followers on LinkedIn. Doblet is an on-demand phone charging service at your favorite bars, restaurants, hotels, malls, cafes and businesses. Using our patent-pending technology, we built the world’s first app-driven portable battery network, available in thousands of venues, right where you live, work and play. Whenever your phone runs low on battery, our Doblet app will help you find the closest place to recharge.