AER BT900 6V/12V Car Battery Tester & Analyzer | AERMOTOR

The AER BT900 Battery Tester by AERMOTOR uses state-of-the-art conductance testing technology to quickly and accurately measure your vehicle battery's real cold cranking amps (CCA), overall health, and the condition of your starting and charging systems. Whether you're a professional mechanic or a hands-on vehicle owner, the BT900 helps you diagnose battery issues in seconds — saving you time, money, and roadside headaches.

Made in Mainland China.

Why Choose the AER BT900 Battery Tester?

• Wide Vehicle Compatibility: Supports 6V and 12V batteries for cars, motorcycles, trucks, and yachts.
• Fast & Accurate Results: Delivers precise test results in milliseconds using advanced conductance technology.
• Test In or Out of Vehicle: Perform battery tests without removing the battery from the vehicle.
• Battery Health Analysis: Displays battery life as a percentage and gives clear results: Good, Recharge, or Replace.
• Voltage Waveform Analysis: One-key entry into battery voltage waveform mode for deeper diagnostics.
• 3 LED Indicators: Instantly tell you your battery's status at a glance.
• 12-Language Support: Available in English, Chinese, German, French, Japanese, Dutch, Russian, Spanish, Italian, Polish, Korean, and Portuguese.
• Lifetime Free Updates: Keep your tester current with free lifetime software updates via PC using the AERMOTOR update tool.
• High-Quality Chipset: Powered by a premium imported STM-32 103VCT6 chip for faster, more reliable performance.
• CE Certified: Meets international quality and safety standards.

Functions & Features

• System Voltage: 6V – 12V
• CCA, DIN, EN, and IEC battery rating standards supported
• Internal resistance measurement (mΩ)
• Battery life percentage display
• Cranking system test
• Charging system test
• Voltage waveform test
• Record & replay battery data
• Battery test, cranking test, charging test, and additional functions
• Print results via PC

What's in the Box?

• 1 × AER BT900 Battery Tester
• 1 × USB Cable
• 1 × User Manual (English)

Learn More About Vehicle Battery Health

Understanding your vehicle battery's health can prevent unexpected breakdowns. For general automotive safety guidance, visit the U.S. Consumer Product Safety Commission (CPSC) for product safety information.

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Learn more: Battery tester

Frequently Asked Questions

Q: What types of vehicles is the AER BT900 battery tester compatible with?

A: The AER BT900 battery tester supports 6V and 12V batteries, making it compatible with a wide range of vehicles including cars, motorcycles, trucks, and yachts. It can test batteries both in and out of the vehicle for added convenience.

Q: What battery standards does the AER BT900 support for CCA measurement?

A: The BT900 supports multiple international battery rating standards including CCA (Cold Cranking Amps), DIN, EN, and IEC, ensuring accurate analysis for batteries from different regions and manufacturers.

Q: How do I update the AER BT900 battery tester software?

A: The AER BT900 comes with lifetime free software updates. Simply connect the tester to your PC via the included USB cable and use the AERMOTOR update tool to keep your device current. Detailed instructions are included in the user manual.

Q: Can the AER BT900 test my battery without removing it from the car?

A: Yes! One of the key advantages of the AER BT900 is that it can test batteries while they are still installed in the vehicle, saving you time and effort during diagnostics.