ChargeLog — Serverless EV Charging Log & Battery Health Estimator

Log EV charging via WeChat Mini Program and auto-analyze battery degradation and costs.

Problem

EV owners manually track charging data to estimate battery health, but existing apps are either too heavy or lack EV-specific fields (energy consumption, time-of-use rates, degradation), leading to abandoned logs.

Solution

A serverless WeChat Mini Program optimized for quick EV charging logging; automatically calculates SOE increment and infers battery health, with simple monthly stats.

Users

Individual EV owners concerned about battery degradation and charging costs, especially WeChat Mini Program users.

MVP

Quick log charging (energy, rate, cost, mileage); auto-calculate SOE increment; year-based sharded storage to overcome limits; chart battery health trend; support data export.

Revenue

Free for basic logging; paid offers advanced analytics (degradation prediction, multi-vehicle comparison) or data export; one-time buyout or annual subscription.

Why now

EV adoption grows, battery anxiety increases, yet lightweight dedicated EV charging loggers are rare; WeChat Mini Program ecosystem lowers dev cost.