EV SoH Tracker

EV SoH Tracker is a clean, practical, and privacy-focused tool designed for electric vehicle owners who want to monitor their battery's real-world State of Health (SoH) over time.

Unlike complex OBD2 scanners, this app calculates your estimated battery capacity based on actual driving data. Simply input your trip mileage, energy consumption, and battery State of Charge (SoC) percentages, and the app plots your battery degradation trends.

Key Features:
* Dual-Curve Tracking (Trip & Service SoH): Log your calculated trip SoH alongside official dealer or OBD2 Service SoH readings. Compare real-world driving estimates directly with the vehicle's internal diagnostic values side-by-side.
* Future Health Predictions: Forecast your remaining battery capacity at any future mileage target (e.g., 150,000 km or 200,000 km) using mathematical degradation modeling.
* Clear Visual Trends: Dynamic charts with distinct trendlines, historical data points, and contrast-optimized themes for both dark and light modes.
* Multi-Car Management: Easily manage and switch between multiple electric vehicles in a single app.
* CSV Data Backup: Export and import your calculation history anytime to keep your vehicle records safe.
* 100% Private & Local: All vehicle and calculation data stays strictly on your device in a local Room database. No cloud servers, no account registration, and no tracking.

Important Note on Accuracy:
Please read the comprehensive in-app User Guide (found under Settings) to understand the practical limits and nuances of real-world battery calculations. Battery degradation estimation is subject to variables such as ambient temperature, hidden manufacturer buffers, and BMS non-linearities. The guide outlines optimal testing habits (such as targeting larger SoC drops and avoiding parked standby consumption) to achieve the most accurate results.

Take control of your EV's battery journey and gain clarity on your long-term battery health!