1. Introduction
The TR16 Coulomb Counter Meter is a high-accuracy, current-type battery capacity tester, also known as a coulometer. It is designed to precisely measure and display the voltage, current, and remaining capacity of various battery types. This device helps users monitor the battery's state in real-time and features a memory function for data retention. Its full-sealing waterproof design ensures stable performance across diverse environmental conditions, making it ideal for mobile and portable equipment, e-bikes, balance cars, cleaning machines, and other instruments.
2. Key Features
- Full-sealing waterproof design for stable performance in various environments.
- Large capacity design, settable up to 999.9AH, compatible with a wide range of batteries.
- High accuracy with a testing error of charge and discharge quantity of electricity ≤1%.
- Equipped with an LCD display for clear visibility of electric quantity, voltage, and current.
- Suitable for lithium batteries, lithium iron phosphate batteries, lead-acid batteries, and nickel-metal hydride batteries with a working voltage range of 8V to 120V.
- Memory function to retain settings and data.
3. Specifications
Figure 1: Technical Parameter Table
Figure 2: Product Dimensions and Battery Compatibility
| Parameter | Value | Unit |
|---|---|---|
| Model | TR16 | - |
| Material | ABS | - |
| Working Voltage Range | 8-120 | V |
| Current Options | 50A, 100A, 350A | - |
| Working Dissipation | 10.0-12.0 | mA |
| Standby Dissipation | 0.5-0.6 | mA |
| Sleep Dissipation | 50-60 | µA |
| Voltage Accuracy | ±1.0 | % |
| Current Accuracy | ±1.0 | % |
| Capacity Accuracy | ±1.0 | % |
| Backlight On Current (50A) | 50.0 | mA |
| Backlight On Current (>50A) | 100.0 | mA |
| Preset Capacity Value | 0.1-999 | Ah |
| 50A Sampler Current Range | 0.0-75.0 | A |
| 100A Sampler Current Range | 0.0-150.0 | A |
| 350A Sampler Current Range | 0.0-500.0 | A |
| Operating Temperature Range | -10 to 60 | ℃ |
| Item Size | 59 * 59 * 20 | mm |
| Item Weight (50A) | 200 | g |
| Item Weight (100A) | 270 | g |
| Item Weight (350A) | 410 | g |
| Adapted Battery Types | Lithium, LiFePO4, Lead-acid, Ternary Lithium, Polymer Lithium Ion, Water, Nickel Cadmium, Nickel Hydrogen | - |
4. Package Contents
The standard package includes:
- 1 x TR16 Battery Capacity Tester
- 1 x 1-meter Shielded Cable (Other lengths such as 0.5m, 2m, 3m, 4m, 5m, 8m, 10m may be available separately.)
Figure 3: Available Sampler Specifications
5. Installation Guide
5.1 Opening Installation Method
To install the meter, create a circular hole with a diameter of 54.5mm on your equipment panel. Insert the meter into this hole from the front. Secure it by tightening the mounting bracket with a butterfly nut from the back.
Figure 4: Opening Installation Diagram
5.2 Wiring Method
Important: Ensure all current flowing through the battery passes through the sampler. The sampler must be connected in series in the negative circuit of the battery. It is strictly prohibited to connect it to the positive circuit or to lengthen/shorten the shielded wire.
- Connect the sampler in series to the negative circuit of the battery pack.
- The B- end of the sampler is connected to the negative electrode B- of the battery pack.
- The P- end of the sampler is connected to the negative electrode P-/B- for charging and discharging.
- Take a red wire (0.3-0.75mm² recommended) and connect one end to the positive pole B+ of the battery pack, and the other end to the B+ terminal on the sampler.
- Connect one end of the shielded wire to the sampler socket and the other end to the TR16 socket. Ensure connections are firm and correct for proper operation.
Figure 5: Wiring Diagrams (50A and 100A/350A models)
6. Operation
The TR16 meter displays four key parameters, which can be manually switched for viewing:
Figure 6: Manually Switchable Display Parameters
- Voltage (V): Real-time display of the battery's operating voltage (supports 8-120V).
- Current (A): Real-time display of the battery's operating current size (maximum 0-500A).
- Capacity (Ah): Real-time display of the remaining battery ampere-hours (supports 0-999 Ah).
- Percentage (%): Real-time display of the percentage of remaining battery power.
Use the buttons on the meter (V, A/Ah SET, %) to cycle through these display modes and access settings.
7. Maintenance
- Keep the meter clean and free from dust and debris. Use a soft, dry cloth for cleaning.
- Avoid exposing the device to extreme temperatures or direct sunlight for prolonged periods.
- Ensure all connections remain secure and free from corrosion.
- The waterproof design protects against rain and splashes, but avoid submerging the device in water.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Power issue | Incorrect wiring, loose connection, battery voltage outside range. | Check all wiring connections according to the diagram (Figure 5). Ensure battery voltage is within 8-120V. |
| Inaccurate readings | Sampler not correctly installed in series, shielded cable damaged, incorrect capacity setting. | Verify the sampler is correctly wired in the negative circuit. Check shielded cable for damage. Ensure the preset capacity value (Ah) is accurate for your battery. |
| Display flickering or unstable | Loose connections, electrical interference. | Tighten all wiring connections. Ensure the shielded cable is properly used to minimize interference. |
9. User Tips
- Always double-check your wiring against the provided diagrams before powering on the device to prevent damage.
- For optimal accuracy, ensure the preset capacity (Ah) matches your battery's actual capacity.
- The waterproof feature is for protection against splashes; avoid full submersion.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your original point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.
