Topdon BT100W Bluetooth 12V Battery Tester – App Reports
Bluetooth App | 12V | 100-2000 CCA | Charging Test
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TOPDON BT100W Bluetooth Battery Tester
Bluetooth 12V Battery & System Tester
The TOPDON BT100W is a Bluetooth-enabled 12V battery and system tester designed for automotive workshops, technicians and vehicle owners. Combining standalone operation with mobile app connectivity, it performs battery, charging and ripple tests while providing detailed battery health analysis. The companion app offers access to a comprehensive battery library, synchronised test data and downloadable reports. Supporting multiple battery types and international battery standards, the BT100W delivers practical battery diagnostics in a compact, easy-to-use device.

Main Features
- Standalone and Bluetooth App Operation – Operates independently or connects to the BT100W mobile app via Bluetooth to access additional diagnostic functions, battery information and detailed test analysis.
- Comprehensive 12V Battery Testing – Performs detailed battery assessments to evaluate battery condition, charge level and cold-cranking performance, helping identify potential battery issues.
- State of Health (SOH) Analysis – Assesses the overall condition of the battery to help technicians understand its current performance and identify potential deterioration.
- State of Charge (SOC) Analysis – Measures the battery's current charge level, providing useful information about its charging condition and available capacity.
- Cold Cranking Amps (CCA) Assessment – Evaluates the battery's cold-cranking performance to help determine its ability to deliver the starting power required by the vehicle.
- Cranking Performance Analysis – Provides cranking time and voltage information to help identify potential battery-related starting issues. Confirm the availability of this function for the BT100W before publishing.
- 12V Charging System Testing – Checks the vehicle's 12V charging system to help identify potential charging performance issues and assess the system's operating condition.
- Battery Ripple Testing – Performs ripple testing to assist in evaluating charging system output stability and identifying potential electrical irregularities.
- Comprehensive Battery Library – Provides access to battery specifications, recognised battery standards and cold-cranking amp (CCA) information to support accurate battery testing.
- Multiple Battery Type Compatibility – Supports Flooded, AGM, Gel, EFB and VRLA battery technologies, making it suitable for testing a range of automotive battery applications.
- Detailed Battery Test Reports – Generates diagnostic reports containing important battery information, including State of Health (SOH), State of Charge (SOC) and internal resistance.
- Bluetooth Data Synchronisation – Synchronises test information between the BT100W tester and its mobile application, helping maintain consistent diagnostic data across both platforms.
- Mobile App Diagnostic Functions – Connects to compatible smartphones through Bluetooth to access additional testing functions, battery information and saved diagnostic reports.
- 2-Inch Backlit Display – Features a 2-inch backlit display for clear visibility of test information and results during automotive battery inspections.
- Multilingual Device Operation – Supports eight device languages, including English, Spanish, French, German, Italian, Portuguese, Russian and Japanese, providing flexible operation for international users.
- Multilingual Mobile App Support – Offers nine app languages, including Chinese, English, French, German, Italian, Portuguese, Russian, Spanish and Japanese.
- Software Update Support – Supports software updates to help maintain the device's software functionality.
Package Includes
- 1 x TOPDON BT100W Battery Tester
- 1 x User Manual
- 1 x Quick User Guide
Why Buy the TOPDON BT100W Battery Tester?

| Standalone and Bluetooth app operation |
| Comprehensive 12V battery testing |
| Battery State of Health (SOH) analysis |
| Battery State of Charge (SOC) analysis |
| Cold Cranking Amps (CCA) assessment |
| 12V charging system testing |
| Battery ripple testing |
| Integrated battery library |
| Detailed battery test reports |
| Bluetooth data synchronisation |
| Flooded, AGM, Gel, EFB and VRLA battery compatibility |
| 2-inch backlit display |
| Eight device languages and nine app languages |
| Software update support |
TOPDON Battery Tester Comparison: BT100 vs BT200 vs BT300P vs BT600 vs BT600 Plus
Every TOPDON car battery tester uses conductance testing to check battery health in seconds, with no heat, sparks or battery drain. All five test Flooded, AGM, Gel, EFB and VRLA batteries from 100 to 2000 CCA, and double as a cranking (starter) and charging (alternator) tester. The differences are 24V truck support, a built-in printer, screen size and professional workshop features.
| Compare features | Most capable |
||||
|---|---|---|---|---|---|
| Best for | Simple 12V battery checks at home | Home garages, plus 24V cranking & charging tests | Workshops needing printed customer reports | Workshops wanting a big screen, printer & system test | Professional, fleet & 24V truck battery testing |
| Battery type | |||||
| Battery voltage tested | 12V | 12V | 12V | 12V | 6V / 12V / 24V |
| Cranking & charging system voltage | 12V | 12V / 24V | 12V / 24V | 12V / 24V | 12V / 24V |
| Battery types supported | Flooded, AGM, Gel, EFB, VRLA | Flooded, AGM, Gel, EFB, VRLA | Flooded, AGM, Gel, EFB, VRLA | Flooded, AGM, Gel, EFB, VRLA | Flooded, AGM, Gel, EFB, VRLA + internal resistance for lithium, alkaline & carbon-zinc |
| Test standards | |||||
| Testing range | 100–2000 CCA 30–220Ah (GB) | 100–2000 CCA 30–220Ah (GB) | 100–2000 CCA 30–220Ah (GB) | 100–2000 CCA 30–220Ah (GB) | 100–2000 CCA 30–220Ah (GB) |
| Battery rating standards | CCA, CA, BCI, MCA, DIN, IEC, EN, SAE, JIS, GB | CCA, CA, BCI, MCA, DIN, IEC, EN, SAE, JIS, GB | CCA, CA, BCI, MCA, DIN, IEC, EN, SAE, JIS, GB | CCA, CA, BCI, MCA, DIN, IEC, EN, SAE, JIS, GB | CCA, CA, BCI, MCA, DIN, IEC, EN, SAE, JIS, GB |
| Test functions | |||||
| Battery test | 12V | 12V | 12V | 12V | 6V / 12V / 24V |
| Cranking (starter) test | 12V | 12V / 24V | 12V / 24V | 12V / 24V | 12V / 24V |
| Charging (alternator) test | 12V | 12V / 24V | 12V / 24V | 12V / 24V | 12V / 24V |
| Full system test | – | – | – | 12V | 12V / 24V |
| Ripple (alternator diode) test | ✓ | ✓ | ✓ | ✓ | ✓ |
| Internal resistance test | – | – | – | – | ✓ |
| Sequence (batch) test | – | – | – | – | ✓ Up to 500 batteries per group |
| Data & software | |||||
| Stored test results | Last 1 | Last 1 | Last 1 | Last 1 | Last 10 |
| Software updates | – | – | – | ✓ | ✓ |
| Smartphone app | – | – | – | – | – |
| Screen & hardware | |||||
| Display | 2" backlit LCD | 2.4" colour | 2.4" colour | 3.5" colour | 3.5" colour |
| Built-in thermal printer | – | – | ✓ | ✓ | ✓ |
| Rechargeable internal battery | – | – | – | – | 5200mAh Tests flat batteries down to 2V |
| Other | |||||
| Languages | English, Spanish, French, German, Italian, Russian | English, Spanish, French, German, Italian, Portuguese, Russian, Japanese | English, Spanish, French, German, Italian, Portuguese, Russian, Japanese | English, Spanish, French, German, Italian, Portuguese, Russian, Japanese | English, Spanish, French, German, Italian, Portuguese, Russian, Japanese |
Battery voltage tested is the battery the tester can assess directly. Cranking & charging system voltage is the vehicle system it can check. Only the BT600 Plus tests 24V batteries directly; the BT200, BT300P and BT600 test 12V batteries and check the cranking and charging systems of 24V vehicles.
Comparison tables are for reference only and based on TOPDON specifications. Refer to each product page or contact us for more information.
TOPDON BT100W Battery Tester – Technical Specifications

| Model: BT100W |
| Testing Range: 100–2000 CCA / 30–220 Ah (GB) |
| Testing Voltage: 12V |
| Battery Standards: CCA / CA / BCI / MCA / DIN / IEC / EN / SAE / JIS / GB |
| Ripple Test: Yes |
| 6V Battery Test: No |
| 12V Battery Test: Yes |
| 24V Battery Test: No |
| 12V Cranking Test: No |
| 24V Cranking Test: No |
| 12V Charging Test: Yes |
| 24V Charging Test: No |
| System Test: Yes, 12V |
| Resistance Test: No |
| Sequence Test: No |
| Mobile App Connectivity: Yes, via Bluetooth |
| Display: 2-inch Backlit Display |
| Built-in Printer: No |
| Supported Battery Types: Flooded / AGM / Gel / EFB / VRLA |
| Battery Library: Yes |
| Data Retrieval: Limited |
| Built-in Battery: No |
| BMS Reset: No |
| Software Updates: Yes |
| Device Languages: English / Spanish / French / German / Italian / Portuguese / Russian / Japanese |
| App Languages: Chinese / English / French / Spanish / German / Italian / Portuguese / Russian / Japanese |
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