Description
KINGBOLEN • Battery tester BM550
The KINGBOLEN BM550 is a professional-grade diagnostic tool for lead-acid batteries used by repair workshops, used-car dealerships, and serious DIY vehicle owners. It supports testing of 6V, 12V, and 24V batteries (including Regular Flooded, AGM Flat Plate, AGM Spiral, GEL, and EFB types) with capacities from 2Ah to 220Ah and CCA range 100-2000 for accurate servicing of cars, trucks, golf carts, motorcycles, ATVs, and marine vessels. Constructed with high-conductivity pure-copper alligator clips, rugged ABS housing, anti-interference silicone wiring, and built-in safety features such as reverse polarity protection and poor-contact detection, the BM550 ensures reliable results in professional environments.
Key benefits
- Comprehensive battery metrics: Measures state of health (SOH), state of charge (SOC), internal resistance, voltage, and cold cranking amps (CCA)
- Multi-voltage and multi-battery type support: 6V / 12V / 24V; Regular Flooded, AGM Flat-Plate, AGM Spiral, GEL, EFB batteries
- Large service range: Suitable for 2-220Ah batteries, with 100-2000 CCA range
- Durable design and safety: Pure-copper clips and cable, reverse-polarity protection, clear LCD screen for result interpretation
- Wide operating conditions: Works between -20°C to 50°C (-4°F to 122°F); compact size for workshop or field use
Supported functions
Depending on vehicle compatibility the following functions are supported:
- Battery voltage measurement
- State of health (SOH) evaluation
- State of charge (SOC) check
- Internal resistance testing
- Cold cranking amps (CCA) assessment
Included items
- 1 × KINGBOLEN BM550 battery tester device
- 1 × pair of alligator clips with test leads (positive and negative)
Supported languages
English, German, French, Italian, Spanish










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