What should I pay attention to when customizing a battery tester car?

When customizing a battery tester for cars, there are various considerations depending on the type of battery. Below are the precautions for traditional flooded batteries and start-stop batteries, respectively:

I. Traditional Flooded Batteries

1. Testing Parameters and Methods:

• Open Circuit Voltage Measurement: Use a multimeter or other tool to measure the battery's open circuit voltage to assess its state of charge. Ideally, the open circuit voltage should be around 12.8V. If it drops below 12.4V, the battery should be charged promptly.

• Cold Cranking Ampere (CCA) Rating: Consider the battery's starting ability in cold environments, which is a key indicator for evaluating the performance of traditional starting batteries.

2. Connection and Testing:

• Battery Terminal Connection: Ensure that the tester is correctly connected to the positive and negative terminals of the battery to avoid test errors due to incorrect connections.

• Pre-testing Preparation: Before testing, you can turn on some power-consuming devices (such as headlights) for a while to eliminate surface tension before measurement, thereby obtaining more accurate test results.

3. Tester Requirements:

• Measurement Accuracy: The tester should have sufficient measurement accuracy to accurately reflect the actual state of the battery.

• Safety: The tester should have overcurrent, overvoltage, and other protective measures to ensure that it does not damage the battery or the tester during the testing process.

II. Start-Stop Batteries

1. Testing Parameters and Methods:

• State of Charge (SOC) and State of Health (SOH): For start-stop batteries, in addition to measuring the state of charge, it is also necessary to assess its state of health. This usually requires a complex testing procedure, including voltage measurement, internal resistance measurement, cold cranking ability assessment, etc.

• Remaining Capacity and Charge Acceptance: Evaluate the battery's remaining capacity and charge acceptance to understand its performance after prolonged use.

2. Connection and Testing:

• Battery Terminal Connection: Similar to traditional flooded batteries, ensure that the tester is correctly connected to the positive and negative terminals of the start-stop battery.

• Testing Equipment Selection: Use modern testing equipment suitable for start-stop battery technology to ensure reliable test results.

3. Tester Requirements:

• Multi-functionality: The tester should have multiple testing functions to meet the different testing needs of start-stop batteries.

• Data Recording and Analysis: The tester should be able to record and analyze test data for long-term tracking and assessment of battery performance.

• Software Updates and Compatibility: As battery technology continues to evolve, the tester's software should be regularly updated to ensure compatibility with new battery technologies.

In summary, when customizing a car battery tester, it is necessary to select appropriate testing parameters, methods, and equipment based on the type of battery. At the same time, attention should also be paid to the tester's connection accuracy, measurement accuracy, safety, and multi-functionality requirements. By making reasonable choices and configurations, the tester can accurately reflect the actual state of the battery, providing strong support for the maintenance and upkeep of vehicles.