Payment Module
Voltpost is revolutionizing electric vehicle charging by transforming existing lampposts into modular, upgradable Level 2 charging stations. In this project, I was tasked to design the next module for a seamless end-to-end charging experience.
PROJECT SCOPE
Design Strategy
Concept Development
User Experience
Background
Lack of trust in street EV charging.
“There is no standardized method of transaction.”
“So frustrating trying to use a charger, and it wouldn’t activate.”
“A lot of times they’re broken in some capacity.”
— Users’ voice online
App Fatigue
Every charging network requires new app, causing tiny friction snowballing into stress.
Fragmentation
Hardware and software experience is separated instead of feeling like one unified system.
Unclear guide
Users are stressed not knowing how to use, or feel stuck when they face unknown errors.
Turning confusion into clarity and overwhelm into confidence —
Voltpost’s payment module makes the end-to-end charging experience seamless and reassuring.
Design Principle
Clear / Intuitive / Elevated
I looked for the constraints required for universal design.
I found overlapping areas based on the average eye-level of males and females, the recommended reading distance, and the ADA standard. This process was critical to get permission to be installed in the public space.
Sized for visibility, familiarity, and cost efficiency
After defining distances and height requirements, I moved on to thinking about display size, proportion and positions in 1:1 size. The screen size was driven by a standard display for visibility, familiarity and cost efficiency in mind.
Refining user experience through a low-fidelity prototype.
Through a cardboard prototype, brainstorming, and a post-it sesh, I ensured seamless onboarding through the on-unit display.
1. Extruded
Frame variation
2. Recessed
The main form directions were driven by how the design integrates with the existing surface. We explored three approaches—Outty, Inny, and Flush. The key criteria were protection and minimal profile, which ultimately led us to select Inny.
3. Flush
Detail and lighting variation
To establish trust through form, we focused on elevating the nuanced cues people associate with premium products. The integrated frame lighting became a key element in elevating the perception of the public charger.
Payment Module
Voltpost’s Payment Module is a seamless, intuitive EV charging interface designed to elevate the end-to-end public charging experience. With a low-friction flow and interactive guidance, it simplifies onboarding and reduces user error. It also extends beyond utility, serving as an emergency-ready network that supports the community.
Inlay display to add protection and readability outdoors.
Tap to pay transaction for universal access without app fatigue.
Alcove lighting around the frame to communicate trust and quality experience.
Optional adopter to accommodate different types of charging ports.
User Experience Flow
End-to-end charging experience.
Learning
I learned that public products can be tricky since there are always unexpected environmental factors and vandalism concerns. The experience needs to be premium yet durable and secure against various uncontrolled conditions posed by public use. Thus, there are many tradeoffs to make it a reality.
We also discussed how the components are securely assembled to the surface— easy enough to be repaired but hard enough to resist attempts to destroy them.
Thanks for watching :)
Contact here to learn more.
yerincho.design@gmail.com