Industry

Electric Vehicles

Client

Soneil Spark

Role

Staff Product Designer

Timeline

3 months

Team

Myself, 6 developers, 2 PMs

EV Charging Interface & Mobile App

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Designing EV charging for everyone — from first-time drivers to commercial fleets.

The challenge: Soneil needed to design a user-friendly charging station interface for their new DC fast charger line. The challenge was creating an experience that would work for both occasional EV drivers and commercial fleet operators, while meeting stringent safety and accessibility requirements in the rapidly evolving EV charging market. My approach and what I did: Led the complete design process from user research through final implementation. Conducted field studies at existing charging stations, interviewed diverse user groups, and worked closely with hardware engineers to understand technical constraints. Developed multiple interface concepts, tested prototypes with real users, and refined the design based on feedback.

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Deliverables: User research documentation, wireframes, high-fidelity prototypes, design system components, developer handoff documentation, and ongoing design support through launch.

Designed an intuitive, accessible charging interface that reduces user confusion and accelerates the charging process. The system features clear status indicators with real-time feedback, multi-language support, and robust error handling that guides users through common issues. Responsive design ensures the experience holds up across different screen sizes and lighting conditions. The redesign reduced average user interaction time by 40% and achieved 95%+ user satisfaction scores in pilot testing. The design patterns established for this project are now being scaled across Soneil's full product line, contributing to faster adoption of their charging stations in market.