LETEL – EV Charging Made Simple

Client: Confidential | Platforms: iOS & Android | Tech Stack: React Native, SignalR, Firebase, Mobile Pay

Project Overview

LETEL is a cross-platform mobile app designed for electric vehicle (EV) owners to effortlessly locate, access, and manage public charging stations. Built using React Native for both Android and iOS, the app delivers a real-time, feature-rich experience for EV drivers navigating the growing charging infrastructure.

Key Objectives

• Help users find and navigate to nearby EV charging stations
• Provide real-time pricing and availability
• Enable secure, seamless payments and billing
• Deliver a reliable offline experience with real-time syncing

Core Features & User Experiences

📍 Navigation & Location

User Story: “As an EV owner, I want to navigate to the nearest available charging station.”
Technology: Google Maps SDK + geolocation services

⚡ Charging Station Discovery

User Story: “I need to discover public EV chargers around me.”
Technology: Interactive GPS map with real-time station availability

💲 Real-Time Pricing & Availability

User Story: “Before heading out, I want to check if a charger is available and how much it costs.”
Technology: SignalR integration for instant updates

👤 Account Management

User Story: “I want to manage my profile and view my charging history.”
Technology: Offline profile support with automatic sync on reconnect

💳 Secure Payment Processing

User Story: “I want to pay quickly and securely using my phone.”
Technology: Mobile Pay integration with QR code-based payments

🧾 Billing & Invoicing

User Story: “I need to export or print my invoice after charging.”
Technology: QR-based invoice generation and export tools

📡 Real-Time Monitoring

User Story: “I want to track my charging session live and get billed automatically.”
Technology: SignalR for live session tracking and auto-pay

🔍 QR Code Functionality

User Story: “I want to start charging instantly by scanning a QR code.”
Technology: Built-in scanner linked to charger hardware

Technical Highlights

• 🔁 Real-time updates: Powered by SignalR’s two-way communication
• 🔔 Push Notifications: Charging alerts via Firebase Cloud Messaging (FCM)
• 🗺️ Location Services: Google Maps SDK + geolocation for station discovery
• 🔐 Secure Payments: Mobile Pay + QR-based validation
• 📶 Offline Mode: Local data storage and background sync
• 📷 QR Integration: Quick charger activation via in-app scanner

User Benefits

• Real-time pricing and charger availability
• GPS navigation to nearby stations
• Seamless mobile payments and invoicing
• Live tracking and session updates
• Offline profile management with auto-sync
• Easy-to-use QR code scanning system

Engineering Strengths

• Fully cross-platform architecture
• Scalable infrastructure to support expanding EV networks
• Secure and reliable payment integrations
• Flexible for future feature growth and enterprise applications

Future Enhancements

LETEL is already a strong foundation but is primed for continued evolution. Planned upgrades include:

• Charging session scheduling
• In-app analytics and reporting
• Additional payment integrations
• Personalized charging recommendations
• Fleet management features for commercial users

Conclusion

The LETEL app exemplifies Ingenium Studios’ commitment to solving real-world problems with smart, scalable technology. By combining powerful tools like React Native, SignalR, and Firebase, we delivered a seamless EV charging experience that empowers drivers — and sets the stage for future innovation in the green mobility space.