FOXWELL BT705 Car Battery Tester User Manual

1. Introduction

The FOXWELL BT705 Car Battery Tester is a professional diagnostic tool designed to accurately assess the health and performance of 12V and 24V automotive batteries, as well as their associated cranking and charging systems. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal use of your device.

Figure 1: FOXWELL BT705 Car Battery Tester, clamps, and hard carrying case.

2. What's in the Box

• FOXWELL BT705 12V 24V Automobile Battery Tester
• User's Manual (this document)
• Hard Carrying Case
• Quick Start Guide

3. Key Features

• Universal Compatibility: Supports 12V and 24V batteries, including flooded, AGM (flat plate and spiral), and GEL types.
• Wide CCA Range: Capable of testing batteries from 100 to 2000 Cold Cranking Amps (CCA).
• Comprehensive Diagnostics: Performs State of Health (SOH), State of Charge (SOC), Cranking System Test, and Charging System Test.
• High Accuracy: Utilizes advanced conductance technology and upgraded copper clamps for 99.9% accuracy.
• User-Friendly Interface: Features a large 2.8-inch digital LCD for clear and easy-to-read results.
• Extended Cable Length: Equipped with a 5.9ft test cable for convenient in-vehicle testing.
• Portable Design: Comes with a robust carrying case for easy storage and transport.

Figure 2: Multi-functional capabilities of the BT705 Battery Analyzer.

Figure 3: The BT705 supports various battery types for comprehensive testing.

Figure 4: Upgraded clamps ensure secure connection and accurate results.

4. Setup and Initial Connection

4.1 Connecting the Tester

1. Ensure the vehicle's ignition is OFF and all accessory loads (lights, radio, etc.) are turned off. Close all vehicle doors.
2. Connect the red positive (+) clamp to the positive terminal of the battery.
3. Connect the black negative (-) clamp to the negative terminal of the battery.
4. Ensure both clamps have good, secure contact with the battery terminals for accurate results.
5. The tester will power on automatically once connected.

Important Note: The FOXWELL BT705 is designed for 12V and 24V systems. It cannot test 6V batteries or 24V batteries alone (it tests 24V systems, not individual 24V batteries).

5. Operating Modes

After connecting the tester, the main menu will appear. Use the arrow keys to navigate and the ENTER button to select.

5.1 Battery Test

This test assesses the overall health and charge of the battery.

1. From the Main Menu, select "Battery Test" and press ENTER.
2. Select the appropriate voltage system (12 Volt System or 24 Volt System) and press ENTER.
3. Select the battery location (In Vehicle or Out of Vehicle) and press ENTER.
4. Select the Post Type (Top Post or Side Post) and press ENTER.
5. Select the Battery Type (e.g., Regular Flooded, AGM, GEL) and press ENTER.
6. Select the Battery Standard (e.g., CCA, CA) and press ENTER.
7. Enter the Battery Rating (CCA value) as indicated on the battery label using the arrow keys, then press ENTER.
8. The tester will display the battery test results, including SOH, SOC, measured CCA, and voltage.

5.2 Cranking System Test

This test evaluates the vehicle's starter performance.

1. After the Battery Test, the tester may prompt you for a Cranking Test, or you can select it from the menu.
2. The screen will instruct you to "Start the Engine".
3. Start the vehicle's engine. The tester will automatically measure cranking voltage and time.
4. The results will indicate if the cranking system is normal or if there are issues.

Figure 5: Performing a Cranking Test with the BT705.

5.3 Charging System Test

This test checks the alternator's output and the overall charging system.

1. After the Cranking Test, the tester will automatically proceed to the Charging System Test, or you can select it from the menu.
2. The screen will instruct you to "Rev Engine with Loads OFF". Briefly rev the engine to about 2500 RPM for 5 seconds, then let it idle.
3. The tester will then instruct you to "Turn on Loads". Turn on high beams, fan, and other electrical accessories to create a load on the system.
4. The tester will display results for no-load voltage, loaded voltage, and ripple, indicating the alternator's performance and any potential issues.

Figure 6: Analyzing the Charging System with the BT705.

6. Maintenance

• Cleaning: Wipe the tester's casing with a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Storage: Store the device in its hard carrying case in a dry, cool environment when not in use to protect it from dust and physical damage.
• Cable Care: Inspect the test cables and clamps regularly for any signs of wear, damage, or corrosion. Replace if necessary.

7. Troubleshooting

8. Specifications

9. Warranty and Support

Your FOXWELL BT705 Car Battery Tester comes with:

• 1-Year Replacement Warranty: Covers manufacturing defects and malfunctions under normal use.
• Lifetime Technical Assistance: Dedicated support team available to assist with any product-related inquiries or operational guidance.

For technical support or warranty claims, please contact us at: amazonsupport@foxwelltech.com