1. Introduction
The Aideepen CellMeter8 and CellMeter7 are versatile digital devices designed for hobbyists and professionals to accurately check the voltage and capacity of various battery types, as well as test standard and narrow servos. These meters provide essential information such as total voltage, individual cell voltages, and battery capacity percentage, ensuring optimal performance and safety for your RC equipment and other applications.
2. Safety Information
Please read and understand the following safety precautions before using the device:
- Always handle batteries with care. Incorrect handling can lead to fire, explosion, or other hazards.
- Ensure correct polarity when connecting batteries to the meter.
- Do not attempt to disassemble or modify the device.
- Keep the device away from water, moisture, and extreme temperatures.
- Store the device in a safe place, out of reach of children.
- If the device shows any signs of damage, discontinue use immediately.
3. Product Overview
The CellMeter is a compact and easy-to-use device. It features a high-visibility LCD screen and intuitive buttons for navigation and function selection.
3.1. Components and Controls (CellMeter 8)



3.2. Components and Controls (CellMeter 7)


4. Setup
The CellMeter is designed for ease of use with minimal setup required.
- Battery Connection: For lithium batteries (LiPo, LiFe, Li-Ion), simply plug the balance plug of your battery into the balance port on the side of the meter. The meter supports up to 8 cells (2-8S). For NiMH/NiCd batteries, use the dedicated discharge port. No additional cables are typically required for basic voltage and capacity checking.
- Power On: The device powers on automatically once a battery is connected.
5. Operating Instructions
5.1. Battery Voltage and Capacity Checking
Once a battery is connected, the LCD screen will display key information. Use the buttons to cycle through different display modes:
- TYPE Button (Setup Menu): Press this button to select the battery type (LiPo, LiFe, Li-Ion, NiMH, NiCd) if the auto-detection is incorrect or to access setup options.
- CELL Button (Servo Test): In battery checking mode, this button typically cycles through individual cell voltages, showing the highest voltage cell, lowest voltage cell, and the voltage difference between them.
- MODE Button (Discharge): This button allows you to switch between different display modes for total voltage, remaining capacity percentage, and potentially initiate a discharge function for NiMH/NiCd batteries (Discharge Current: 1A, Balance Current: 1A).
The meter provides precise voltage readings with a precision of 0.001V.
5.2. Servo Testing (CellMeter 8 only)
The CellMeter 8 can also function as a servo tester. Connect your servo to the designated "Servo Test" port. You can test standard and narrow servos within a range of 1000-2000us or 500-2500us.
- Connect a 5V power source to the "Servo 5V Power IN" port if the servo requires external power.
- Use the CELL button to switch to servo test mode and adjust parameters as needed.
6. Maintenance
To ensure the longevity and accuracy of your CellMeter, follow these maintenance guidelines:
- Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Avoid dropping the device or subjecting it to strong impacts.
- Store in a cool, dry place when not in use.
- Regularly inspect the ports and connections for any signs of wear or damage.
7. Troubleshooting
If you encounter issues with your CellMeter, try the following:
- No Display: Ensure the battery is properly connected and has sufficient charge to power the meter. Check for any loose connections.
- Incorrect Readings: Verify that the correct battery type is selected (if applicable) and that the balance plug is fully inserted.
- Servo Test Malfunction: Ensure the servo is correctly connected and receiving adequate power (if external 5V is required). Check the servo itself for functionality.
- Device Unresponsive: Disconnect the battery, wait a few seconds, and reconnect. If the issue persists, the device may require professional inspection.
8. Specifications
| Feature | Specification |
|---|---|
| Item Name | CellMeter 8 / CellMeter 7 |
| Discharge Current | 1A |
| Balance Current | 1A |
| Battery Voltage Test Precision | 0.001V |
| Supported Battery Types | Li-Po, Li-Ion, Li-Fe (2-8S), NiCd, NiMH (4-8S) |
| Servo Test Range | 1000-2000us or 500-2500us (CellMeter 8 only) |
| Material | ABS |
| Dimensions | 84 x 50 x 15mm |
| Battery Included | No |
| Certification | None |
| Origin | Mainland China |
9. User Tips
Based on user feedback and common questions, here are some helpful tips:
- For accurate readings, ensure your battery's balance lead is fully inserted into the meter's balance port.
- When checking individual cell voltages, pay attention to the difference between the highest and lowest cells, as a large discrepancy can indicate an unhealthy battery.
- The CellMeter is excellent for quick checks before and after charging to monitor battery health.
- If you are using the discharge function for NiMH/NiCd batteries, monitor the process to prevent over-discharge.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
A PDF version of this user manual may be available for download from the product page or the manufacturer's website for your convenience. (Reference: User manual (PDF))





