Do I need a special diagnostic tool or dongle?

No. A passive ENET cable (OBD-II to RJ45) and any Ethernet interface on your computer are enough for DoIP on supported vehicles. None of the usual OBD dongles are involved.

Does Hanterill send any data anywhere?

No. It communicates only with the vehicle and writes results to your disk. There is no account, no backend, no analytics and no telemetry. The VIN is kept out of logs and exports unless something needs it.

Which vehicles are actually supported?

Polestar 2 and the CMA-platform Volvos (XC40/EX40, C40/EC40) are the tested platforms. Combustion and hybrid CMA cars are partially supported through the engine reference lane. SPA has provisional DoIP connection, module inventory and fault scans verified on a live V90 T6, while hybrid battery reads still need testing on more cars. SEA1 (EX30, Polestar 4) has battery catalogues and decoders shipping in the app, and direct gateway connection is verified on a Zeekr 001, while battery reads are labelled Testing.

Can Hanterill damage my car?

Ordinary scans only read the car. A service action can move a part or change a setting, so Hanterill asks you to confirm each one separately. Follow the vehicle's service instructions, especially around high voltage.

Is this an official Volvo or Polestar tool?

No. Hanterill is an independent project. It is not affiliated with, maintained by or authorised by Volvo Cars, Polestar or Geely. The source is available to read. It is provided for personal, non-commercial use.

What can I do with the battery data?

Read state of health and charge, pack voltage, per-cell-group potentials for every populated position (108 on CMA, plus SPA and SEA pack topologies), min/max/delta and pack temperature, and export a session to compare before and after a repair.

Can I use it without a car?

No. Released builds talk to real vehicles only; there is no demo mode. Connect an ENET cable to a supported car to get readings. The examples on this site use fixed sample data.

What does the inspection report give me?

The report brings battery condition, cell balance, fault codes and odometer checks into one document. You can review the findings behind its result and create a report from a saved session later. GPS is omitted unless you choose to include it.

Read your Volvo or Polestar directly.

Plug a supported Volvo or Polestar into your computer with an ENET cable, then read its battery, fault codes and live measurements. The app keeps the session on your machine.

Download Hanterill Check your vehicle View source

Private use is free in every release.

Hanterill

Connected

Vehicle

Polestar 2

Long range, dual motor

Battery health

94.72%

Cell delta

8mV

Pack voltage

398.6V

State of charge

62%

Pack voltage, 60 s400.5 V

Representative interface with sample values. Not a live vehicle reading.

Captured on the reference vehicle

All screenshots

A passive cable is all the hardware you need.

A passive ENET cable and any Ethernet interface are enough to reach a supported vehicle. Select a part of the chain to see what it does.

OBD-II
Ethernet
USB / socket

OBD-II
Ethernet
USB / socket

Request: read dataResponse: 398.6 V

The adapter is just a cable.

1OBD-II connector
2ENET cable
3RJ45
4USB-C Ethernet adapter
5Laptop

A passive ENET cable wires the vehicle's OBD-II pins to an RJ45 plug. From there it's ordinary Ethernet to your computer.

No ELM327 or generic OBD dongle
No J2534 pass-through interface for standard DoIP
No proprietary Bluetooth adapter
No driver install for a passive ENET cable

Connection guide

Every cell-group potential in the pack.

27 modules, four cell-group potentials each. Point at any one to compare it with the pack.

SpreadΔ 8 mV / 108

within 2 mV2 to 4 mVover 4 mV

Module spread. Tap a module to inspect it.

Pack

-6 mVmean 3.721 V+6 mV

Hover or focus any cell group to inspect it. On a supported CMA car these are live values from the battery module; here they are fixed sample data.

Pack mean3.721 V

Spread8 mV

Min / Max3.717 / 3.725 V

Pack temp21.4 to 24.9 °C

Module 14

Average3.722 V

Highest3.725 V

Lowest3.717 V

Delta8 mV

Temperature22.6 °C

3.723

3.717

3.725

3.722

CMA tested. SPA partially supported. SEA1 catalogued.

Polestar 2 and the CMA Volvos are the tested platforms. SPA ships as catalogue data and is partially supported: DoIP connection, module inventory and fault scans have been exercised on a live V90 T6, while hybrid battery reads still need testing on more cars. SEA1 definitions and direct gateway connection are catalogued and still need testing on more cars. Reaching a car is not the same as supporting it.

Platform

Verification

Supported

Compact Modular Architecture. The tested platform: Polestar 2 and the smaller electric Volvos. 108 cell groups, 27 modules by 4. Combustion and hybrid CMA cars are partially supported through the engine reference lane.

Tested against 2023 Polestar 2 Long Range Dual Motor, 2018 XC40 (combustion)

Polestar 2

Platform: CMA
Powertrain: BEV
Hanterill status: Supported
Model years: 2021 to present

Single- and dual-motor. 108-group under-floor battery layout (27 modules of 4 cell groups), plus the 96-group standard-range LFP layout on 2024 and newer single-motor cars.

Verified functions

DoIP connectionSupported
ECU discoverySupported
DTC scanSupported
Battery state of healthSupported
Cell-group potentialsSupported
Live dataSupported
Service routinesPartial

Compatibility is not a claim of manufacturer support. Hanterill is an independent project and is not affiliated with Volvo Cars, Polestar or Geely.

Full compatibility and status

Works on macOS, Windows and Linux.

One application, built natively for each platform. Nothing bundles a browser engine, and no download starts on its own.

Download Hanterillv0.3.0 · Oct 3, 2026

WindowsWindows 10 and 11
- 64-bit
  Hanterill_0.3.0_x64-setup.exe · 13.0 MB
  Download .exe
- 64-bit
  Hanterill_0.3.0_x64.exe · 32.4 MB
  Download .exe
macOSApple silicon Macs
- Apple silicon
  Hanterill_0.3.0_aarch64.dmg · 13.9 MB
  Download .dmg
LinuxUbuntu, Debian, Fedora, Arch
- x86_64
  Hanterill_0.3.0_amd64.AppImage · 90.0 MB
  Download .appimage
- x86_64
  Hanterill_0.3.0_amd64.deb · 15.2 MB
  Download .deb
- x86_64
  Hanterill_0.3.0_amd64.tar.gz · 15.1 MB
  Download .tar.gz
- x86_64
  Hanterill-0.3.0-1.x86_64.rpm · 15.2 MB
  Download .rpm

Does it read your car?CMA · SupportedSPA · PartialSEA1 · TestingSPA2 · Research

The status by platform, from verified on real vehicles to catalogue only. Check your vehicle

Private use is free in every release. Every diagnostic function in the app comes with the download, with no account or trial to set up. Workshops that charge for this work can ask about a commercial licence.

The source is published and readable.View source on GitHub

Follow a reading further.

Each instrument links to a page explaining its readings and limits. The case study follows one sample session through a repair.

Your vehicle data stays with you.

Hanterill talks to the vehicle and writes diagnostic data to your disk. There is no backend and no subscription, and nothing about your car is uploaded or sold. The VIN is removed from logs and exports that do not need it.

How Hanterill handles data

VehicleComputer

Direct link. Nothing else in the path.

Cloud backend
Account
Analytics
Telemetry
Data upload

Read by default. Writes ask first.

Ordinary checks read information from the car. Clearing codes, resetting a control unit and running a service routine each require a separate confirmation.

Read-only

Battery data
ECU identification
Fault codes
Live telemetry
Session archive and export

Changes the vehicle

Clear diagnostic information
Service routines
ECU reset (force-reset loop)

Confirmation required

High voltage. Electric vehicles carry hazardous high-voltage systems. Reading data over a cable does not make it safe to work on them, and Hanterill is not a substitute for the manufacturer's service procedures.

Safety documentation

Questions people ask

Do I need a special diagnostic tool or dongle?: No. A passive ENET cable (OBD-II to RJ45) and any Ethernet interface on your computer are enough for DoIP on supported vehicles. None of the usual OBD dongles are involved.
Does Hanterill send any data anywhere?: No. It communicates only with the vehicle and writes results to your disk. There is no account, no backend, no analytics and no telemetry. The VIN is kept out of logs and exports unless something needs it.
Which vehicles are actually supported?: Polestar 2 and the CMA-platform Volvos (XC40/EX40, C40/EC40) are the tested platforms. Combustion and hybrid CMA cars are partially supported through the engine reference lane. SPA has provisional DoIP connection, module inventory and fault scans verified on a live V90 T6, while hybrid battery reads still need testing on more cars. SEA1 (EX30, Polestar 4) has battery catalogues and decoders shipping in the app, and direct gateway connection is verified on a Zeekr 001, while battery reads are labelled Testing.
Can Hanterill damage my car?: Ordinary scans only read the car. A service action can move a part or change a setting, so Hanterill asks you to confirm each one separately. Follow the vehicle's service instructions, especially around high voltage.
Is this an official Volvo or Polestar tool?: No. Hanterill is an independent project. It is not affiliated with, maintained by or authorised by Volvo Cars, Polestar or Geely. The source is available to read. It is provided for personal, non-commercial use.
What can I do with the battery data?: Read state of health and charge, pack voltage, per-cell-group potentials for every populated position (108 on CMA, plus SPA and SEA pack topologies), min/max/delta and pack temperature, and export a session to compare before and after a repair.
Can I use it without a car?: No. Released builds talk to real vehicles only; there is no demo mode. Connect an ENET cable to a supported car to get readings. The examples on this site use fixed sample data.
What does the inspection report give me?: The report brings battery condition, cell balance, fault codes and odometer checks into one document. You can review the findings behind its result and create a report from a saved session later. GPS is omitted unless you choose to include it.

Download Hanterill and see what your vehicle has recorded.

Source-available, free for private use, and staying that way. It runs on your computer and reads the vehicle directly.

Download Hanterill View source