Overview
The FOXWELL BT100 Pro analyzes 12V battery health in seconds — measuring CCA, state of charge, and state of health before you replace parts unnecessarily.
Whether you are troubleshooting a check engine light, preparing for an emissions test, or performing scheduled maintenance, the BT100 Pro gives you the module access and service functions you need without booking a dealer appointment. On-screen menus walk you through each step, and stored scan reports help you track repairs over time.
Key Features
- Tests 12V batteries from 100–1100 CCA
- Supports flooded, AGM flat plate, AGM spiral, and gel batteries
- Pass/fail result with clear recommendation
- Standalone operation — no vehicle connection required for battery test
What You Can Diagnose
The BT100 Pro helps you identify root causes faster by reading fault codes, live sensor values, and module status across the systems it supports:
- Check engine light (MIL) and powertrain fault codes
- Oxygen sensor, fuel trim, and emissions-related DTCs
- Evaporative emissions (EVAP) system faults
- Catalyst efficiency and misfire monitor status
- Freeze frame data captured at the moment of failure
How to Use This Tool
Plug the BT100 Pro into your vehicle's 16-pin OBD2 port (usually under the dashboard). Turn the ignition to ON — the tool powers from the vehicle and guides you through reading codes in seconds. Use the built-in DTC library to understand each fault, then clear codes after repairs and re-scan to confirm the fix.
Vehicle Compatibility
12V automotive and light-duty batteries. Not an OBD2 scanner — pairs well with FOXWELL code readers.
Always verify that your exact year, make, model, and engine combination is supported before purchase — especially for service resets, bi-directional tests, and brand-specific modules. OBD2 port location is typically under the driver-side dashboard on U.S. vehicles from 1996 onward.
Who Should Buy This
Anyone diagnosing slow cranking, alternator issues, or winter battery failures at home.
If you regularly work on your own vehicles, run a small repair shop, or buy used cars to flip, the BT100 Pro pays for itself quickly compared to per-visit dealer diagnostics.
Why Choose FOXWELL
For everyday check-engine diagnostics, FOXWELL code readers deliver dealer-level code definitions and live data without a monthly fee. They are easier to use than phone apps, work offline in any garage, and pay for themselves after a single avoided dealer diagnostic visit.
Connectivity & Software Updates
Standalone (clips to battery terminals). No updates required. Keep firmware current to maintain the widest vehicle coverage and access to newly added service functions.
