1. Introduction
The Hytera CM31 is a versatile AC110-220V Walkie Talkie Charging Hub designed for efficient and centralized charging of up to eight Hytera S1/S1 Pro walkie-talkies or their batteries. This hub is ideal for teams requiring simultaneous charging, such as those in rotating shifts or intensive operational environments. It features a built-in power management chip to ensure safe and optimized charging processes.
2. Safety Information
- Always use the provided power adapter or a certified equivalent with the specified voltage and current ratings (AC110-220V input, DC 12V/5A output).
- Do not expose the charging hub to water, moisture, or extreme temperatures.
- Ensure the charging hub is placed on a stable, flat surface with adequate ventilation to prevent overheating.
- Avoid disassembling or modifying the device, as this may void the warranty and pose safety risks.
- Keep out of reach of children.
- Unplug the power adapter from the wall outlet when not in use for extended periods or during electrical storms.
3. Package Contents
Please check the package for the following items:
- 1 x Hytera CM31 Walkie Talkie Charging Hub
- 1 x Power Adapter (AC110-220V input, DC 12V/5A output)
4. Product Overview
The Hytera CM31 charging hub is designed for convenience and safety. It features eight USB Type-C charging bases, allowing for simultaneous charging of multiple devices. The robust design includes anti-slip support points on the bottom for stability and efficient heat dissipation through its ventilation system.




5. Setup Instructions
- Unpack the Charger: Carefully remove the Hytera CM31 charging hub and its power adapter from the packaging.
- Connect Power: Insert the DC plug of the power adapter into the "DC IN 12V" port on the side of the charging hub.
- Plug into Outlet: Plug the power adapter into a standard AC110-220V wall outlet.
- Placement: Place the charging hub on a flat, stable, and well-ventilated surface. The anti-slip points on the bottom will help secure it.
6. Operating Instructions
- Insert Devices: Gently place your Hytera S1/S1 Pro walkie-talkies or their batteries into the available USB Type-C charging slots. Ensure they are seated correctly and make proper contact.
- Charging Process: The built-in power management chip will automatically initiate the charging process, which typically involves pre-charging, constant current, and constant voltage phases to optimize battery life and safety.
- Charging Indicators: (Assumed) Observe the charging indicators on your walkie-talkies or batteries. These typically show red for charging and green for fully charged. The charging hub itself does not have explicit indicators mentioned, relying on the devices being charged.
- Charging Time: The hub is designed for high-power charging, allowing for full power recovery in approximately 2 hours for compatible devices.
- Remove Devices: Once charging is complete (indicated by your device's battery status or indicator light), carefully remove the walkie-talkies or batteries from the charging slots.
7. Maintenance
- Cleaning: Disconnect the power before cleaning. Use a soft, dry cloth to wipe the surface of the charging hub. Do not use liquid cleaners or abrasive materials.
- Storage: When not in use, store the charging hub in a cool, dry place away from direct sunlight and moisture.
- Inspection: Periodically inspect the power adapter cable for any signs of damage. If damaged, discontinue use and replace with an authorized adapter.
8. Troubleshooting
- Device not charging:
- Ensure the power adapter is securely connected to both the charging hub and the wall outlet.
- Verify the wall outlet is functioning correctly.
- Check if the walkie-talkie or battery is correctly seated in the charging slot and making proper contact.
- Ensure the walkie-talkie or battery is compatible with the CM31 charging hub.
- Slow charging:
- Confirm that the power adapter is the original or a compatible high-quality replacement.
- Ensure the charging hub is in a well-ventilated area to prevent thermal throttling.
9. Specifications
| Feature | Specification |
|---|---|
| Model Number | CM31 |
| Item Type | Chargers |
| Brand Name | Hytera |
| Input | AC110 - 220V |
| Output | DC 12V/5A |
| Charging Interface | USB Type-C x 8 |
| Net Weight | Approx. 800g (without power adapter) |
| Product Size | 267 x 139 x 52mm |
| Origin | Mainland China |
10. User Tips
- For optimal charging speed and safety, always use the original power adapter provided with the Hytera CM31 charging hub.
- Ensure that each walkie-talkie or battery is firmly seated in its respective charging slot to guarantee a stable connection.
- Regularly check the charging contacts on both the hub and your devices for any dust or debris, and clean them gently if necessary to maintain efficient charging.
- When charging multiple devices, distribute them evenly across the available slots if possible, although the hub is designed to handle full capacity.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your authorized Hytera dealer or the point of purchase. Keep your purchase receipt as proof of purchase for warranty claims.





