1. Introduction
The ANENG BT175 is a professional 12V/24V lead-acid battery life detector and automotive alternator analyzer. Designed for ease of use and high accuracy, it provides comprehensive diagnostics for various battery types and vehicles. This manual will guide you through the proper use and maintenance of your BT175 battery tester.

2. Safety Information
- Always wear appropriate personal protective equipment, such as safety glasses, when working with batteries.
- Ensure proper ventilation when testing batteries, as they can emit explosive gases.
- Avoid contact with battery acid. If contact occurs, flush immediately with water and seek medical attention.
- Do not short-circuit the battery terminals.
- Ensure the alligator clips are securely connected to the correct battery terminals (red to positive, black to negative) to prevent sparks or damage.
- The BT175 is designed for lead-acid batteries (STD, AGM, GEL, EFB) and is not suitable for lithium battery testing.
3. Package Contents
Please check the package contents upon receipt:
- 1 x ANENG BT175 Battery Tester
- 1 x Packing Box
- 1 x User Manual

4. Product Overview
The ANENG BT175 features an integrated design with an LCD screen, control buttons, and insulated alligator clips for safe and easy operation. It also includes a back support frame for convenient placement during testing.

Key components and controls:
- LCD Backlit Display
- Up Selection Key
- Reset Button
- Back Key (returns to previous state/P1)
- Confirm Button (OK/TEST)
- Down Selection Key
- Back Support Brace
- Negative Electrode Alligator Clip (Black)
- Positive Alligator Clip (Red)
The display provides detailed information, including:
- Battery Type Options (STD, AGM, GEL, EFB)
- Battery Type Indicator
- Cold Cranking Current (CCA)
- International Electrotechnical Standards (IEC)
- American Standard (SAE)
- European Standards (EN)
- German Standard (DIN)
- Ampere-hour Standard (AH)
- State of Health (SOH) / State of Charge (SOC)
- Voltage (VOLT)
- Internal Resistance (LR)
- Discharge Current (EDC)
5. Specifications
The following table outlines the technical specifications of the ANENG BT175 Battery Tester:
| Parameter | Value |
|---|---|
| Voltage Range | 8V-36V |
| Operating Temperature | -10 to 50℃ |
| Battery Specifications | 12V/24V (lead-acid batteries, not for lithium battery testing) |
| Scope of Application | Automobiles, motorcycles, electric vehicles, forklifts, etc. |
| Battery Standard (Accurate Measurement) | CCA: 50~1999 |
| Battery Standard (Fast Measurement) | 3AH~200AH |
| Battery Type | STD battery/AGM battery/GEL battery/EFB battery |
| Test Standard | CCA/IEC/SAE/EN/DIN/AH |
| Battery Test | Discharge current/internal resistance detection/voltage detection/power detection/remaining life |
| Bad Contact Alert | Yes |
| Line Integration | Yes |
| Alligator Clip Opening Size | 2.8cm / 1.10 inch |
| Alligator Clip Length | 62.5cm / 24.61 inch |
| Weight | 270g |
| Backlit Bright Screen | Yes |
| Support Frame | Yes |
| Battery Required | No (powered by tested battery) |
Note: The parameters are for reference only; actual measurements may vary slightly.
6. Setup and Connection
Follow these steps to connect the BT175 to your vehicle's battery:
- Turn the car's ignition key to the OFF position.
- Clamp the red alligator clip onto the positive (+) terminal of the battery.
- Clamp the black alligator clip onto the negative (-) terminal of the battery. Ensure both clips are securely attached and make good contact.

The tester will power on automatically once connected, as it draws power directly from the battery being tested.
7. Operating Instructions
The BT175 can detect multiple data items simultaneously, providing a comprehensive overview of your battery's health.

To perform a battery test:
- After connecting the tester, the display will show the initial screen (P1). Use the Up/Down selection keys to navigate through options.
- At P1 state, use the Up/Down keys to select the battery type (STD, AGM, GEL, EFB). Press the 'OK/TEST' button to confirm and proceed to the next state.
- At P2 state, use the Up/Down keys to select the battery standard (CCA, IEC, SAE, EN, DIN, AH). Press 'OK/TEST' to confirm.
- At P3 state, use the Up/Down keys to adjust the maximum discharge current of the tested battery. Press 'OK/TEST' after selection.
- The tester will then perform the measurement. Wait approximately 2-3 seconds for the results to be displayed.
- The measurement result screen will show various parameters such as SOH (State of Health), SOC (State of Charge), Voltage, Internal Resistance, and a recommendation (e.g., PERFECT, GOOD, BAD, REPLACE, RECHARGE).

The BT175 intelligently identifies battery types and provides accurate readings for various lead-acid battery chemistries.

The device is suitable for testing Flooded, Gel-Sealed, Valve-Regulated Lead-Acid, and Colloidal Sealed batteries.
8. Troubleshooting
If you encounter issues during operation, refer to the following common problems and solutions:
- No Display/No Power: Ensure the alligator clips are firmly connected to the battery terminals. The tester draws power from the battery itself. Check for corrosion on battery terminals and clean if necessary.
- Inaccurate Readings: Verify that the battery type and standard selected on the tester match the battery being tested. Ensure good contact between the clips and terminals.
- "Poor Electrode Contact" Reminder: The display has left/right clip icons that flash and beep if poor contact is detected. Re-adjust the alligator clips to ensure a secure connection to the battery terminals.

- Tester Freezes/Unresponsive: Disconnect the tester from the battery, wait a few seconds, and then reconnect. If the issue persists, press the 'RES' (Reset) button.
9. Maintenance
To ensure the longevity and accuracy of your ANENG BT175 Battery Tester:
- Keep the device clean and dry. Wipe with a soft, damp cloth if necessary. Do not use abrasive cleaners or solvents.
- Store the tester in a cool, dry place away from direct sunlight and extreme temperatures.
- Inspect the alligator clips and cables regularly for any signs of damage or wear. Replace if necessary.
- Do not attempt to open or repair the device yourself, as this will void the warranty.
10. User Tips
Here are some tips to get the most out of your BT175 Battery Tester:
- For the most accurate results, ensure the battery is fully charged before testing, especially when evaluating its overall health (SOH).
- When testing a battery that has just been charged or discharged, allow it to rest for at least 15-30 minutes before performing a test. This allows the battery voltage to stabilize.
- Always double-check the selected battery type and standard on the tester to match your specific battery for precise readings.
- The compact size and built-in stand make it convenient for use in various automotive settings.
- If you suspect an issue with your alternator, the BT175 can help confirm if the battery is not receiving adequate charge.
11. Additional Resources
For a detailed user manual in PDF format, please refer to the official document available at: User manual (PDF)
12. Warranty and Support
ANENG products are manufactured to high-quality standards. For warranty information and technical support, please contact your retailer or visit the official ANENG website. Keep your purchase receipt as proof of purchase.





