EV Battery Health Lite
EV Battery Health Lite uses the same read-only, profile-based diagnostic platform as EV Battery Health. The Lite edition is free and supported by Google AdMob advertisements.
The app does not assume that one universal SOH PID exists for every EV. Each vehicle profile defines the addressing, requests, validation rules, formulas and supported measurements for that vehicle family.
CORE PRINCIPLE
Available data depends on the vehicle. One profile may expose only SOH, while another may also provide odometer, Delta, cell voltages, battery temperatures, capacity-related values or BMS diagnostic information. The app should show only supported capabilities instead of pretending every vehicle provides the same data.
CORE FEATURES
- Battery SOH: reads or calculates State of Health from vehicle-specific OBD/UDS data where supported.
- Capacity context: shows battery capacity together with the profile's declared basis (gross, net, nominal, published or usable where known).
- Optional measurements: ODO, Delta, temperatures, cell voltages and other values only when the selected vehicle/profile supports them.
- Vehicle profiles: built-in and USER/custom imported profiles with strict read-only validation.
- Profile revisions: USER profile revisions can be preserved instead of overwriting the previous diagnostic configuration.
- Technical diagnostics: local diagnostic sessions, raw responses and troubleshooting information.
- Local processing: normal vehicle diagnostic data is processed on the Android device.
LITE DIAGNOSTIC PROCESS
EV Battery Health Lite is intended to keep the same diagnostic capability as the paid edition. Its commercial difference is advertising.
- Vehicle diagnostic communication itself is local over Bluetooth.
- An active Internet connection is required in the Lite edition before starting Diagnostic, Adapter Compatibility, or New Vehicle – Profile Help diagnostic data collection because these workflows use the Lite advertising gate.
- An advertisement is not shown simply because the app is opened. The advertising gate is used when one of the diagnostic functions above is started.
- A diagnostic session starts only after the Lite advertising requirement has been completed successfully.
- Consent and Do not consent are both supported privacy choices. Consent is not mandatory for using the app interface.
- After choosing Do not consent, advertisements may remain unavailable for a longer period. If no advertisement is available, the Lite diagnostic session cannot start at that time.
- If an advertisement is unavailable, the app may show “Advertisement is currently unavailable. Try again.” This is a handled no-ad-available state, not by itself a diagnostic failure.
- The privacy choice can be changed later through Privacy Options when Internet access is available.
84 BUILT-IN EV PROFILES
The current catalog contains 84 built-in vehicle/battery diagnostic profiles. A different battery capacity or diagnostic variant may be represented by a separate profile even when the make and model name are the same.
- The built-in catalog follows a conservative read-only, SOH-first strategy.
- Built-in profiles focus first on a defined SOH diagnostic path, response structure and formula.
- ODO, Delta and other optional measurements are enabled only when vehicle-specific evidence supports them.
- A built-in profile is not automatically the same thing as a fully verified profile; a profile may remain experimental until sufficient real-vehicle validation has been completed.
USER PROFILES & REVISION HISTORY
Custom profiles created, edited or imported by the user remain USER profiles. They do not automatically become built-in or verified.
- Editing a USER profile can create a new revision rather than silently overwriting the previous revision.
- Profile revision information is preserved during supported import/export workflows.
- This allows earlier and later diagnostic configurations to be compared during real-vehicle testing.
NEW VEHICLE — PROFILE HELP & MULTI-STAGE CONVERGENCE
If a suitable built-in profile does not exist, New Vehicle – Profile Help can collect a read-only diagnostic evidence package for profile development.
- Run New Vehicle – Profile Help and export the Help Request / diagnostic evidence.
- The user may optionally upload the exported data to an AI assistant such as ChatGPT, Claude or Gemini.
- Create an initial USER v1 diagnostic profile and import it into the app.
- Test the profile on the real vehicle and save the Technical Diagnostic Report / raw evidence.
- Analyse the new evidence and refine the profile into USER v2 or a later revision when necessary.
- Import the revised profile and repeat the real-vehicle test.
- Continue only when each revision is supported by new real diagnostic evidence, until the result is stable and reproducible.
No diagnostic package is automatically uploaded to ChatGPT, Claude, Gemini or any other AI service. Export and sharing are initiated by the user.
- The workflow is intended only for ordinary compatible read-only OBD2/ELM access.
- Do not use profiles that require SecurityAccess, seed/key procedures, ECU coding, write services, gateway unlocking, encryption bypass, actuator control or manufacturer-only service authorization.
- If a supported result cannot be reached without such procedures, the convergence process should stop rather than bypass vehicle security.
COMMUNITY PROFILES
EV Battery Health Community Profiles is intended for sharing USER profiles, test evidence and profile-development information. Community or imported profiles should be treated as user-provided diagnostic configurations until they have been independently validated on the exact vehicle/battery variant.
Open EV Battery Health Community Profiles
COMPATIBILITY & CONNECTION
- Compatible ELM327/ELM329/STN-style OBD2 Bluetooth adapters are required for actual vehicle diagnostics.
- Bluetooth Classic / RFCOMM and Bluetooth LE / GATT are supported where the adapter and Android device support the required transport.
- Vehicle-specific 11-bit or 29-bit CAN addressing and manufacturer-specific read-only UDS requests may be used by profiles.
- Recommended / well-suited examples: Vgate vLinker MC+, Vgate vLinker FS, Vgate iCar Pro BLE 4.0 and Veepeak BLE.
- A genuine or well-implemented ELM327 Classic adapter can work, but compatibility depends on firmware quality and command support.
- Avoid very cheap unbranded clone adapters when possible. Some may reject commands, truncate long or multi-frame responses, freeze during larger transfers or implement only part of the ELM command set correctly.
- If connection quality is uncertain, run Adapter Compatibility before relying on diagnostic results.
- Not every vehicle exposes SOH or the same supporting battery data through OBD2.
- Protocols can vary by model year, battery version, ECU software and market.
- Custom/community profiles may be experimental or incorrect until validated on real vehicles.
- The intended workflow is read-only and informational; the app is not intended for ECU flashing, coding, DTC clearing or repair procedures.
EV BATTERY HEALTH vs EV BATTERY HEALTH LITE
Both editions use the same diagnostic platform. The Lite edition does not intentionally remove battery-diagnostic features; its commercial difference is advertising.
| Feature | EV Battery Health Lite | EV Battery Health |
|---|---|---|
| Battery diagnostics | Same | Same |
| 84 built-in vehicle/battery profiles | Same | Same |
| USER/custom imported profiles | Same | Same |
| Profile Help / convergence workflow | Same | Same |
| Technical diagnostics / export | Same | Same |
| Advertisements | Yes — Google AdMob | No advertisements |
| Price | Free | Paid |
| Vehicle OBD communication | Local over Bluetooth | Local over Bluetooth |
| Edition-specific Internet use | Required before ad-gated diagnostic workflows — Google AdMob / UMP | Google Play license verification when required |
| Advertising / consent | Google AdMob + UMP; Consent and Do not consent supported | No advertisements / no ad-consent gate |
Why use EV Battery Health Lite?
The free edition is not intended to remove diagnostic features. Google AdMob advertising supports development. Users who prefer an ad-free interface can choose EV Battery Health.
PRIVACY & SUPPORT
Core vehicle diagnostic communication is local over Bluetooth. Exported diagnostic packages are shared only when the user chooses to share them.
The Lite edition uses Google AdMob and Google User Messaging Platform (UMP) for advertising and privacy-choice handling where required. Consent and Do not consent are both supported choices. Choosing Do not consent does not disable the app, but advertisements may remain unavailable for a longer period; when no advertisement is available, a Lite diagnostic session cannot start. The choice can be changed later through Privacy Options.
👉 Read the EV Battery Health Lite Privacy Policy
Contact Support:
📧 catalystfixpro@gmail.com
