CleanTech & Mobile Mobility Featured Case Study
Smart EV Charging Station Aggregator & Dynamic Slot Reservation
Cross-platform mobile app displaying real-time charger hardware status with wallet-based reservation.
Charger Network180+ Live Plugs
Booking Time< 20 Seconds
Queue Elimination65% Reduction
The Challenge & Engineering Friction
Electric vehicle drivers in urban metros experience acute range anxiety and routinely arrive at charging stations only to discover 60-minute vehicle queues or non-functional charger hardware. Existing generic map applications lack live hardware heartbeat telemetry, cannot differentiate between 30kW DC Fast vs 7.4kW AC plugs, and provide no ability to reserve a plug in advance.
Station operators were losing revenue because drivers left overcrowded hubs while chargers at neighboring commercial plazas sat idle.
The Technical Solution & Architecture
ARdevlopers built ChargeFlow: a unified smart charging mobility ecosystem comprising a React Native mobile app for drivers and a cloud station portal for charge point operators. The mobile app provides a live interactive map indicating real-time plug availability, connector types (CCS2, Type 2, GB/T), and dynamic kilowatt-hour pricing.
Drivers can reserve a 30-minute charging slot with a single tap, navigate directly via Google Maps integration, unlock the charger with an in-app QR code, and pay seamlessly using an integrated digital wallet.
Core Architectural Decisions
Hardware Heartbeat Telemetry
OCPP (Open Charge Point Protocol) WebSocket integration continuously polling charger status every 10 seconds.
Geofenced Navigation
Integration with Google Maps Navigation SDK automatically initiating turn-by-turn guidance upon reservation.
Payment Idempotency
Transactional atomic balance deductions ensuring zero double-charging or wallet discrepancy on network drop.
Key Engineering Features & Capabilities
Interactive vector map clustering 180+ charging stations with live green/amber/red hardware status pins.
Dynamic time-slot reservation lock preventing other vehicles from reserving the plug for 30 minutes.
Battery percentage-aware route planning suggesting optimal charging stops along intercity highway routes.
Integrated Razorpay digital wallet with automated per-minute kilowatt-hour billing and instant invoice receipts.
Operator web portal for monitoring charger hardware telemetry, energy consumption, and revenue analytics.
Verified Handover Package & Deliverables
Production-tested React Native source code configured for both Android and iOS mobile platforms.
Node.js REST API with OCPP socket gateways and Razorpay payment webhook handlers.
Station operator web dashboard with energy usage analytics and tariff pricing controls.
Full technical documentation and API specifications for hardware charger manufacturers.
Project Specification
Industry SectorElectric Mobility & CleanTech
Client / AudienceMobility Startup (VoltCharge Networks)
Execution Timeline3.5 Weeks from Concept to App Store Readiness
Deployment TargetReact Native Mobile App + Node.js API + Razorpay
Engagement ModelFull-Cycle Mobile Product Engineering
Technologies Used
React NativeReact 18Node.jsExpressMongoDB AtlasRazorpayGoogle Maps APITailwind CSS