Description
KINGBOLEN • Battery tester BM520
The KINGBOLEN BM520 is a professional-grade battery analyser designed for 6V, 12V, and 24V lead-acid battery systems. It supports multiple battery types—regular flooded, AGM flat plate, AGM spiral, EFB, GEL—and tests Cold Cranking Amps (CCA) ranging from 100 to 2000 to evaluate capacity between 2Ah and 220Ah. With a 2.8-inch TFT colour screen, reverse polarity protection and multi-language support, the BM520 suits both automotive technicians and serious DIY users. It delivers detailed diagnostics through battery lifetime (SOH/SOC), internal resistance, voltage and various test modes including start-up, charging, load and ripple tests.
Key benefits
- Supports 6V-, 12V-, and 24V batteries including Flooded, AGM (flat and spiral), EFB and GEL types
- Wide CCA range (100-2000 CCA) and Ah range (2-220 Ah) for diverse vehicle and backup applications
- Multiple test functions: battery health, cranking, charging, load and ripple tests for full system diagnostics
- Safety and convenience features: reverse polarity protection, lifetime free updates, multi-language display
Supported protocols
- CCA (Cold Cranking Amps)
- BCI (Battery Council International)
- CA (Cranking Amps)
- MCA (Marine Cranking Amps)
- JIS (Japan Industrial Standard)
- DIN (German standard)
- IEC (International Electrotechnical Commission)
- EN (European Norm)
- SAE (Society of Automotive Engineers)
- GB (China National Standard)
Supported functions
Depending on vehicle compatibility the following functions are supported:
- Battery test (measures SOH, SOC, internal resistance, voltage)
- Start-or cranking test (battery discharge during engine start)
- Charging system test (alternator/voltage regulator performance)
- Load test (battery under real-world electrical load)
- Ripple test (voltage fluctuation analysis in charging system)
- Voltage waveform monitoring with playback of recorded data
- Built-in multimeter functionality including screenshot capture of results
Included items
- 1 × KINGBOLEN BM520 battery tester with alligator clamps
- 1 × USB cable
- 1 × carrying case
- 1 × user manual
Supported languages
English, French, Spanish, Italian, Portuguese, Russian, German, Polish, Japanese, Traditional Chinese, Simplified Chinese










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