1. Introduction
The ANENG BT138 is a versatile and compact portable battery tester designed to quickly and accurately assess the charge level of various battery types. Featuring a clear LCD display, this device provides instant voltage readings, indicating whether a battery is depleted, weak, or in good condition. Its battery-free operation ensures convenience and a longer service life. This manual provides essential information for the safe and effective use of your BT138 battery tester.
Image 1: The ANENG BT138 Portable Battery Tester in operation, showing a 1.50V reading on its LCD screen.
2. Safety Information
- Do not attempt to test rechargeable batteries with this device. The ANENG BT138 is designed for disposable batteries only and draws power from the battery being tested.
- Ensure correct polarity (+ and -) when inserting batteries into the tester to prevent damage to the device or inaccurate readings.
- Keep the device dry and clean. Avoid exposure to extreme temperatures or humidity.
- Do not disassemble or modify the tester. Refer all servicing to qualified personnel.
- Keep out of reach of children.
3. Product Overview
The ANENG BT138 features a compact design with an integrated LCD screen for clear voltage readings. It includes specific contact points for various battery sizes and a flexible silicone wire for connecting to different terminals.
Image 2: Detailed diagram of the ANENG BT138 showing its components and dimensions.
Components:
- Voltage digital display screen
- Soft silicone wire
- Battery detection negative electrode
- Battery detection positive electrode
- 9V battery detection terminal positive electrode
- 9V battery detection terminal negative electrode
4. Setup
The ANENG BT138 battery tester requires no internal batteries for operation. It draws power directly from the battery being tested. Simply ensure the device is clean and ready for use.
Image 3: The ANENG BT138 operates without needing its own batteries, testing various types.
5. Operating Instructions
The BT138 is designed for one-step instant testing. Follow these steps to test your batteries:
5.1. Testing Cylindrical Batteries (AA, AAA, C, D, N, 1.5V/3.7V Lithium)
- Identify the positive (+) and negative (-) terminals of the battery.
- Connect the positive electrode of the BT138 (marked with '+') to the positive terminal of the battery.
- Connect the negative electrode of the BT138 (marked with '-') to the negative terminal of the battery.
- The LCD screen will immediately display the battery's voltage.
Image 4: The ANENG BT138 is compatible with a wide range of 1.2V-4.8V batteries, including common cylindrical types.
5.2. Testing 9V Batteries (6F22)
- Locate the dedicated 9V battery detection terminals on the BT138. These are typically marked for 9V battery detection.
- Align the positive and negative terminals of the 9V battery with the corresponding terminals on the tester. The tester may use magnetic attraction for secure connection.
- The LCD screen will display the 9V battery's voltage.
Image 5: The BT138 features rapid detection for 9V batteries, showing a 9.00V reading.
Image 6: The mini magnet suction feature ensures a secure and easy connection for 9V battery testing.
5.3. Testing Button Batteries (CR2032, LR44, L736)
- Place the button battery onto the designated contact points for button cells, ensuring correct polarity.
- The LCD screen will display the button battery's voltage.
5.4. Interpreting Readings
- The LCD display shows the exact voltage.
- Generally, a higher voltage indicates a healthier battery.
- If the battery voltage is too low (e.g., below 1.0V for a 1.5V battery), the screen may not display any reading. This indicates a fully depleted battery.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the tester. Do not use abrasive cleaners or solvents.
- Storage: Store the BT138 in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping the device or subjecting it to strong impacts.
7. Troubleshooting
- No display when testing a battery:
- Ensure the battery is correctly inserted with proper polarity.
- The battery might be completely depleted (dead). Try testing a known good battery to confirm tester functionality.
- Check for any debris or corrosion on the battery terminals or tester contacts.
- Inaccurate readings:
- Ensure good contact between the battery and the tester's electrodes.
- Verify the battery type is within the tester's supported range (1.2V-4.8V).
8. Specifications
| Feature | Specification |
|---|---|
| Model | BT138 |
| Display Mode | Digital display |
| Power Source | No power required (draws from battery being tested) |
| Testable Battery Types | D, C, AA, AAA, 9V (6F22), 1.5V/3.7V Lithium (e.g., 18650, 16340, 21700, 14500, 10440), Button batteries (e.g., CR2032, LR44, L736) |
| Voltage Range | 1.2V - 4.8V (for most types), 9V (for 6F22) |
| Product Weight | 20 g (approx. 13g as per image) |
| Product Dimensions | 15cm x 2cm x 1cm (approx. 18.8 x 3.99 x 1.19 cm as per product data) |
| Material | ABS/Silicone |
| Color | Red |
Note: The parameters are for reference only, and actual measurements may vary slightly. This detector can only measure 9V 1.2V-4.8V batteries.
9. Warranty and Support
For warranty information or technical support, please refer to the retailer or the official ANENG website where you purchased the product. Keep your proof of purchase for any warranty claims.
