# EV Battery Diagnostics by CS — Service Tools & Handbook

> Service Tools & Handbook (iPhone/iPad app by ChatStick Company Limited.)

- Source: https://appshunter.io/ios/app/ev-battery-diagnostics-by-cs/id6784500412 (this page in markdown: same URL + `.md`)
- Developer: [ChatStick Company Limited](https://appshunter.io/developer/1165816085)
- Category: Reference, Education
- Price: $4.99
- Age rating: 4+
- Requires: iOS 18.0 · 17 MB
- Languages: American English
- Released: 2026-07-06
- Data updated: 2026-07-17
- User reviews in markdown: https://appshunter.io/ios/app/ev-battery-diagnostics-by-cs/id6784500412/reviews.md

## What is EV Battery Diagnostics by CS?

EV Battery Diagnostics is a practical service toolkit and offline handbook for automotive technicians, students, EV specialists, fleet teams, and serious learners who want a structured way to understand high-voltage battery systems.

The app combines technician-focused reference material with interactive tools for real service workflows. Use it to review EV battery chemistry, BMS behavior, SOC and SOH concepts, DTC troubleshooting, high-voltage safety, thermal management, cell balance, capacity testing, solid-state battery considerations, and fleet maintenance planning.

Key features:

- Complete EV Battery Diagnostics & Maintenance Handbook
- Offline chapter reader with bookmarks, notes, progress tracking, and adjustable text size
- Service checklist grouped by safety, data collection, capacity evaluation, and repair phases
- Guided diagnostic decision trees for reduced range, slow charging, insulation faults, and cell imbalance
- Searchable DTC reference library with likely causes and related handbook chapters
- Calculators for State of Health, range, charging time and cost, cell balance, insulation resistance, degradation projection, pack configuration, and HV safety timing
- Vehicle service records for tracking battery chemistry, rated capacity, diagnostic sessions, SOH, usable kWh, cell spread, mileage, and service notes
- SOH trend charts and PDF service report export
- Chapter quizzes, missed-question review, glossary, quick reference cards, image gallery, achievements, and a certification-style exam with a shareable completion certificate
- Home Screen widget with rotating EV battery service tips
- Local preferences for light/dark mode, units, haptics, reminders, and reading size

This app is designed as a learning and workflow aid. It does not replace OEM service information, certified high-voltage training, shop safety rules, or vehicle-specific repair procedures. Always follow manufacturer documentation and applicable safety regulations before working on any high-voltage system.


## Version history (last 1 release)

### 1.0 — 2026-07-06

No release notes.

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All apps by ChatStick Company Limited: https://appshunter.io/developer/1165816085

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-17.*