KONNWEI KW208 Car Battery Tester User Manual

1. Introduction

The KONNWEI KW208 is a professional 12V car battery tester designed to analyze the health of various 12V lead-acid batteries, including regular flooded, AGM flat plate, AGM spiral, and GEL batteries. It provides comprehensive testing for battery health, cranking performance, and charging system efficiency. This manual will guide you through the setup, operation, and maintenance of your KW208 battery tester.

Figure 1: KONNWEI KW208 Car Battery Tester Overview

2. Product Features

• Comprehensive Battery Analysis: Tests 12V batteries with ratings from 100 to 2000 CCA.
• Multi-Battery Type Support: Compatible with regular flooded, AGM flat plate, AGM spiral, and GEL batteries.
• Multiple Test Standards: Supports CCA, BCI, CA, MCA, JIS, DIN, IEC, EN, SAE standards.
• Three Core Tests: Battery Health Test, Cranking Test, and Charging Test.
• High Accuracy: Provides over 99.5% precise testing reports within milliseconds, utilizing a top-level STM32F103C8T chip.
• In-Vehicle & Out-of-Vehicle Testing: No need to remove the battery for testing.
• Safety Features: Equipped with overvoltage input protection and reverse connection protection.
• Multi-Language Support: Offers 8 language options including English, German, Russian, Portuguese, Dutch, Italian, French, and Spanish.
• Data Review: Allows reviewing of previous test data.
• Portable Design: Small and easy to carry for convenience in various settings.

Figure 2: Multi-functional Analyzer Capabilities

3. What's in the Box

Upon opening your KONNWEI KW208 package, you should find the following items:

• 1 x KONNWEI KW208 Car Battery Tester Unit
• 1 x User Manual
• 1 x Color Box Packaging

Figure 3: Package Contents

4. Specifications

Figure 4: KW208 Technical Specifications

5. Setup

1. Connecting the Tester

   Connect the red alligator clip to the positive (+) terminal of the 12V battery and the black alligator clip to the negative (-) terminal. The tester will power on automatically as it draws power directly from the battery.

   

   Figure 5: Correct Battery Connection and Reverse Polarity Protection

2. Language Selection

   From the main menu, navigate to 'Setup' using the UP/DOWN buttons and press 'ENTER'. You can then select your preferred language from the available options.

   

   Figure 6: Language Selection Interface

6. Operating Instructions

The KW208 features a simple interface with UP, DOWN, EXIT, and ENTER buttons for navigation and selection.

1. Main Menu Navigation

   After connecting the tester, the main menu will appear. Use the UP and DOWN buttons to scroll through options like 'Check', 'Review', 'Setup', and 'About'. Press ENTER to select an option and EXIT to go back to the previous screen.

2. Battery Test

   Select 'Check' from the main menu, then choose 'Battery Test'. The tester will analyze the battery's State of Health (SOH), State of Charge (SOC), CCA value, internal resistance, and voltage. The results will indicate if the battery is Good, needs Recharge, or Replace.

   Note: Before performing the battery test, ensure the car engine is turned off and the ignition key is in the OFF position.

   

   Figure 7: Battery Test Screen

3. Cranking Test

   From the 'Check' menu, select 'Cranking Test'. This test analyzes the actual cranking voltage and cranking time to assess the starting system's condition. The tester will display results such as 'CRANKING NORMAL' or 'CRANKING LOW'.

   Note: For the cranking test, ensure the car engine is turned off. You will be prompted to start the car engine during the test.

   

   Figure 8: Cranking Test in Progress

4. Charging Test

   Select 'Charging Test' from the 'Check' menu. This test evaluates the generator's charging process and the overall charging circuit. It can also perform a ripple test to check for excessive AC ripple voltage.

   

   Figure 9: Charging Test and Ripple Test Results

5. Supported Battery Types

   The KW208 is designed to test a wide range of 12V lead-acid batteries. These include:

   • Regular Flooded
   • AGM Flat Plate
   • AGM Spiral
   • GEL
   • EFB
   

   Figure 10: Supported Battery Types

7. Maintenance

• Cleaning: Use a soft, dry cloth to clean the tester. Do not use abrasive cleaners or solvents.
• Storage: Store the device in a dry, cool place away from direct sunlight and extreme temperatures.
• Cable Care: Ensure the test cables and alligator clips are not damaged. Replace if wear or damage is observed.
• Software Updates: Check the official KONNWEI website periodically for any available software updates to ensure optimal performance and compatibility.

8. Troubleshooting

Tester does not power on:

Ensure the alligator clips are securely connected to the correct battery terminals (red to positive, black to negative). The battery must have at least 8V for the tester to power on.

Inaccurate readings:

Check that the battery terminals are clean and free of corrosion. Ensure the clips have a good connection. Verify that the correct battery type and CCA rating are entered into the tester if prompted.

Tester displays 'Reverse Connection':

This indicates the clips are connected to the wrong battery terminals. Disconnect immediately and re-connect with the red clip to positive (+) and black clip to negative (-). The device has built-in protection against reverse polarity.

9. User Tips

• Regular Checks: Perform battery tests regularly, especially before long trips or during seasonal changes, to prevent unexpected breakdowns.
• Engine Off for Battery Test: Always ensure the vehicle's engine is off and the ignition key is in the OFF position when performing a battery test to get accurate readings.
• Language Setting: The device supports multiple languages. If the display is not in your preferred language, navigate to the 'Setup' menu to change it.
• Portability: The compact size of the KW208 makes it easy to keep in your glove compartment or toolbox, allowing for quick checks anytime, anywhere.

10. Warranty and Support

KONNWEI products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the contact details provided on the official KONNWEI website or your purchase documentation. Keep your proof of purchase for warranty claims.

11. Product Video Overview

Watch this video for a quick overview of the KONNWEI KW208 Car Battery Tester's features and functions.