The Mobility House · eyond · 2024
A feature redesign giving EV drivers full control over their charging mode from anywhere. The location constraint had frustrated users since launch. Two interaction approaches were explored and validated through moderated usability testing with real eyond users.
Year
2024
Role
Lead Product Designer · Interaction Design · Usability Testing
Team
Product Designer · Product Manager · Engineers
Platform
iOS & Android
The problem
EV drivers could only switch charging modes (Flex, PV or Instant) when physically plugged in at home. Qualitative feedback was consistent: users felt the app didn't trust them to make their own decisions about their own car.
The constraint wasn't technical. It was a UX decision that hadn't aged well.
What I built
I redesigned the charging mode selector to be location-independent, accessible at any time from the main dashboard. The key design decision: settings take effect when the car connects, not immediately. This respected the hardware constraint while giving users genuine planning control — switching to Instant before leaving work, or scheduling PV the night before.
Outcome
Moderated usability testing showed Implementation 2 consistently outperformed Implementation 1. Users completed mode switches faster and with more confidence when the control lived in the charging status card. After launch, remote sessions increased and PV charging sessions grew. No formal tracking was in place at the time, but the behavioural shift was clear.
Locked
Mode switching unavailable when unplugged.
Switchable from anywhere
Changes take effect on the next home charge.