1. Introduction
The ANENG BT175 is a versatile 12V/24V lead-acid battery tester designed for comprehensive diagnostics of vehicle batteries. It features a digital backlit high-definition large screen for clear visibility in various environments and a retractable support bracket for convenient use. This device allows for one-click detection of multiple battery data points including lifespan, internal resistance, voltage, discharge current, battery level, and provides current battery recommendations. It also includes a poor contact reminder to ensure accurate readings. The BT175 is suitable for a wide range of applications, including automobiles, motorcycles, electric vehicles, and forklifts.

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 use the tester on damaged or leaking batteries.
- Ensure the tester's alligator clips are securely connected to the correct battery terminals (red to positive, black to negative) to prevent short circuits or damage.
- This device is designed for lead-acid batteries only. Do not use it with lithium batteries or other battery types.
- Keep the device away from water, moisture, and extreme temperatures.
3. Package Contents
Please check the package contents upon receipt:
- Battery tester (1 unit)
- Instruction manual (1 unit)
- Color box (1 unit)

4. Product Overview
4.1. Device Layout and Controls

- LCD Backlit Bright Screen: Displays test results and navigation menus.
- Up Key (▲): Navigates up through menu options or increases values.
- Down Key (▼): Navigates down through menu options or decreases values.
- OK/TEST Key: Confirms selections and initiates tests.
- ESC Key: Returns to the previous page/menu.
- RES Key: Resets the device or returns to the initial boot P1 state.
- Positive Electrode Crocodile Clip (Red): Connects to the battery's positive terminal.
- Negative Crocodile Clip (Black): Connects to the battery's negative terminal.
- Retractable Support Bracket: Allows the device to stand upright for hands-free viewing.
4.2. Display Interface

- TYPE: Indicates selected battery type (STD, AGM, GEL, EFB).
- SOH (State of Health): Percentage indicating the battery's overall health.
- SOC (State of Charge): Percentage indicating the battery's current charge level.
- LR (Load Resistance): Internal resistance measurement.
- VOLT: Current battery voltage.
- EDC (Estimated Discharge Current): Discharge current measurement.
- Battery Standard Indicators: CCA (Cold Cranking Amps), IEC (International Electrotechnical Commission), SAE (Society of Automotive Engineers), EN (European Standard), DIN (Deutsches Institut für Normung), AH (Ampere-Hour).
5. Specifications

| Parameter | Value |
|---|---|
| Product Name | Battery Tester |
| Voltage Range | 8V-36V |
| Operating Temperature | -10℃ to 50℃ |
| Battery Specification | 12V/24V (Lead-acid batteries only) |
| Scope of Application | Vehicle batteries for automobiles, motorcycles, electric vehicles, forklifts, etc. |
| Applicable Battery Standards (CCA) | 50~1999 CCA |
| Applicable Battery Standards (AH) | 3AH~200AH |
| Battery Types | STD Battery, AGM Battery, GEL Battery, EFB Battery |
| Test Standards | CCA, IEC, SAE, EN, DIN, AH |
| Battery Test Parameters | Discharge current, internal resistance detection, voltage detection, battery level detection, remaining life |
| Battery Status Indications | Excellent, Good, Poor, Replaced |
| Crocodile Clip Opening Size | 2.8 cm |
| Crocodile Clip Cable Length | 62.6 cm |
| Backlight on Screen | Yes |
| Poor Contact Reminder | Yes |
| Batteries Required | No (powered by tested battery) |
| Weight | 267g |

6. Setup
Before performing any tests, ensure the battery is fully charged for the most accurate results. If testing a car battery, turn the car key to the OFF position.
- Connect the red alligator clip to the positive (+) terminal of the battery.
- Connect the black alligator clip to the negative (-) terminal of the battery.
- The device will automatically power on and the backlight will illuminate.

7. Operating Instructions
7.1. General Navigation
- Use the Up (▲) and Down (▼) keys to navigate through menu options or adjust values.
- Press the OK/TEST key to confirm a selection or proceed to the next step.
- Press the ESC key to return to the previous screen.
- Press the RES key to return to the initial P1 screen (Home).
7.2. Battery Testing Steps (P1-P4)
Follow these steps to perform a battery test:
- P1: Select Battery Type
Use the Up/Down keys to select the battery type (e.g., STD, AGM, GEL, EFB) that matches your battery. If the battery type is not marked, 'STD' (universal) is the default. Press OK/TEST to proceed. - P2: Select Battery Standard
Use the Up/Down keys to select the appropriate CCA standard (e.g., CCA, IEC, SAE, EN, DIN, AH) as indicated on your battery. Press OK/TEST to proceed. - P3: Set Maximum Discharge Current
Use the Up/Down keys to adjust the maximum discharge current (A) of the tested battery. Refer to the comparison table of battery capacity and CCA values (see Section 7.3) for guidance. Press OK/TEST to enter P4 measurement. - P4: Test Result Display
The measurement results will appear in approximately 2-3 seconds. Use the Up/Down keys to switch between different data points such as lifespan (SOH), internal resistance (LR), voltage (VOLT), discharge (EDC), and battery status.

7.3. Battery Capacity and CCA Comparison Table

| Capacity (AH) | Corresponding CCA value (A) | Capacity (AH) | Corresponding CCA value (A) |
|---|---|---|---|
| 3.3AH | 55A | 28AH | 340A |
| 4AH | 65A | 31AH | 350A |
| 5AH | 80A | 33AH | 360A |
| 6AH | 100AH | 38AH | 370A |
| 7AH | 130A | 40AH | 380A |
| 8AH | 150A | 45AH | 400A |
| 9AH | 155A | 50AH | 425A |
| 10AH | 160A | 55AH | 445A |
| 12AH | 210A | 60AH | 465A |
| 14AH | 220A | 65AH | 520A |
| 15AH | 230A | 75AH | 550A |
| 17AH | 250A | 80AH | 570A |
| 18AH | 265A | 85AH | 600A |
| 20AH | 285A | 100AH | 670A |
| 24AH | 310A | 120AH | 700A |
| 25AH | 320A | 150AH | 755A |
| 26AH | 330A | 200AH | 995A |
8. Maintenance
- Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the battery tester in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid bending or kinking the cables excessively to prevent internal damage.
- Clip Inspection: Periodically check the alligator clips for any signs of wear, corrosion, or damage. Ensure they maintain a strong grip.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Incorrect or loose connection to battery terminals. Battery voltage too low. | Ensure alligator clips are securely connected to the correct battery terminals. Check if the battery has sufficient charge (minimum 8V). |
| Poor contact alert (screen flashes, sounds alarm) | Alligator clips are not properly clamped to the battery terminals. | Re-clamp the alligator clips firmly onto the battery terminals, ensuring good metal-to-metal contact. |
| Inaccurate or inconsistent readings | Battery not fully charged. Poor connection. Incorrect battery type/standard selected. | Ensure the battery is fully charged before testing. Verify secure connections. Double-check that the correct battery type and standard are selected in P1 and P2. |
| Screen is dim or hard to read | Ambient light conditions. | The device features a backlit screen for visibility in dark environments. Ensure the backlight is active. Move to a better-lit area if necessary. |

10. User Tips
- Optimal Accuracy: For the most reliable results, always ensure the battery is fully charged before initiating a test.
- Secure Connections: Pay close attention to the alligator clip connections. A firm, clean connection to the battery terminals is crucial to avoid 'poor contact' alerts and ensure accurate data.
- Hands-Free Convenience: Utilize the built-in retractable stand to position the tester for easy viewing during operation, especially when working in tight spaces or needing both hands free.
- Understand Your Battery: Familiarize yourself with your battery's specifications (type, CCA, AH) to correctly input them into the tester for precise diagnostics.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact details provided by your retailer or the official ANENG support channels. Keep your purchase receipt as proof of purchase.





