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§ Private Profile · San Francisco, CA, USA
Mobile service provider operating a network of portable phone charging stations for smartphone users in the San Francisco Bay Area.
Doblet has raised $2.3M across 2 funding rounds.
Key people at Doblet.
Doblet was founded in 2014 by Doktor Gurson (Founder/CEO) and Jeff Chang (Founder/CTO).
Doblet has raised $2.3M in total across 2 funding rounds.
Based in San Francisco, California, Doblet operates a network of portable phone charging stations located across various urban venues, including bars, restaurants, cafes, hotels, and commercial retail malls. Consumers access the on-demand battery charging service for their smartphones by downloading a dedicated mobile application to locate nearby partner venues and unlock the hardware. The company successfully scaled its physical infrastructure to encompass over 1,000 active charging locations distributed throughout the San Francisco Bay Area. To support its ongoing hardware and software development, the startup secured $1.3 million in seed venture capital funding from notable institutional investors including Y Combinator, Uncork Capital, and GMO Venture Partners. The enterprise also successfully secured a utility patent for its mobile power source technology in 2019 before eventually becoming an inactive entity. Doblet was founded in 2013 by Doktor Gurson.
Key people at Doblet.
Doblet has raised $2.3M across 2 funding rounds. Most recently, it raised $1.3M Seed in May 2015.
| Date | Round | Lead Investors | Other Investors | Status |
|---|---|---|---|---|
| May 7, 2015 | $1.3M Seed | Uncork Capital | — | Announced |
| Aug 1, 2014 | $1M Seed | — | Canvas Ventures, Founder Collective, Graph Ventures, Mucker Capital, Precursor Ventures, Quiet Capital, RED Swan Ventures, Renegade Partners, Social Capital, Tenaya Capital, ULU Ventures, Uncork Capital | Announced |
Doblet was founded in 2014 by Doktor Gurson (Founder/CEO) and Jeff Chang (Founder/CTO).
Doblet has raised $2.3M in total across 2 funding rounds.
Doblet's investors include Uncork Capital, Canvas Ventures, Founder Collective, Graph Ventures, Mucker Capital, Precursor Ventures, Quiet Capital, Red Swan Ventures, Renegade Partners, Social Capital, Tenaya Capital, Ulu Ventures.
Doblet is a pioneering company that addresses the ubiquitous problem of phone battery depletion by creating the world’s first network of batteries on demand for charging phones anywhere. Their product is a smart portable battery system distributed across venues like cafes, bars, restaurants, gyms, hotels, and other public spaces. Through a mobile app on iOS and Android, users are instantly notified of the nearest location to pick up a Doblet battery when their phone’s charge runs low. This service allows users to charge their phones on the go without being tethered to a charging station or locker. Doblet primarily serves mobile phone users who need convenient, portable power solutions, and has built significant growth momentum with over 350 active venues in the San Francisco Bay Area and more than 1,000 venues pre-signed, alongside plans for international expansion and corporate partnerships[1][2][4][5].
Doblet was founded by Doktor Gurson (CEO) and Jeff Chang (CTO), both of whom bring unique backgrounds to the venture. Gurson conceived the idea after witnessing a man in a bar struggling to find a charger and realizing the demand for portable power on the go. Jeff Chang, an ER radiologist with expertise in machine learning and product development, co-founded the company to build a scalable solution. The company participated in Y Combinator’s Summer 2014 batch, which helped accelerate its early growth. Doblet’s evolution involved overcoming hardware development challenges, moving from 3D printing prototypes to injection molding for faster iterations and better product quality. Early traction included securing seed funding of $1.3 million and establishing a network of venues in the Bay Area, with pilot tests underway for international and corporate deployments[1][2][3][4].
Doblet rides the growing trend of mobile-first lifestyles and the increasing dependence on smartphones, which makes battery life a critical pain point. The timing is favorable due to the proliferation of mobile devices, the rise of the gig economy, and consumer demand for seamless, on-the-go solutions. Market forces such as urbanization, the expansion of shared economy services, and venue-based customer engagement strategies support Doblet’s model. By enabling portable power access in everyday locations, Doblet influences the broader ecosystem by enhancing user convenience, driving traffic to local businesses, and setting a precedent for hardware-software integrated services in the mobile charging space[1][2][4][5].
Looking ahead, Doblet is poised to expand its network beyond the Bay Area into international markets in Europe and Asia, supported by new hardware iterations that improve user experience. The company’s growth will likely be shaped by trends in mobile device usage, increasing demand for sustainable and convenient charging solutions, and partnerships with corporate and government entities. Doblet’s influence may evolve from a regional hardware startup to a global platform for portable power, potentially integrating with other smart city and IoT initiatives. Their continued innovation in hardware design and venue partnerships will be critical to maintaining competitive advantage and scaling their impact in the mobile ecosystem[2].
