1. Introduction
The MRCARTOOL S311 is a wall-mounted electric vehicle (EV) charger station designed for home use. It provides efficient and safe AC charging for a variety of EV models. The unit features a touchscreen display for real-time monitoring, multiple safety protections, and flexible charging access options including card swipe, password entry, and plug-and-charge functionality. This manual provides essential information for the proper installation, operation, and maintenance of your S311 EV charger.

Figure 1: MRCARTOOL S311 EV Charger Overview
2. Technical Specifications
| Feature | Specification |
|---|---|
| Model | S311 |
| Charger Type | Wall-mounted EV Charger Station (AC Charging Pile For Home Use) |
| Input Voltage | AC220V ±20% |
| Input Frequency | 50HZ |
| Rated Power | 7KW |
| Output Current | 10A/14A/16A/25A/32A (Adjustable) |
| Cable Length | 26ft / 8m |
| Standby Power Consumption | Less than 2W |
| Operating Temperature | -20℃ ~ +80℃ |
| IP Rating | IP65 (Control Box), IP55 (Gun Head - Coupling State) |
| Product Dimensions | 324*187*70 mm |
| Weight | 7KG |
| Installation Method | Wall-mounted |
| Wiring Method | Bottom entry/exit |
| Measurement Accuracy | Level 1 |
| Applicable Environment | Indoor/Outdoor |
| Operating Humidity | 5%~95% non-condensing |
| Operating Altitude | Less than 2000m |
| User Interface | Display screen with LED indicator |

Figure 2: Product Dimensions and Cable Length
3. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged:
- S311 Main Unit
- Packing Box
- Screws (for installation)
- User Manual (this document)
- Back Bracket (for mounting)
- RFID Card (for access control)

Figure 3: Package Contents
4. Setup and Installation
The MRCARTOOL S311 EV Charger is designed for wall-mounted installation. Due to the electrical nature of this product, professional installation by a qualified electrician is highly recommended to ensure safety and compliance with local electrical codes.
4.1 Mounting the Charger
- Select a suitable indoor or outdoor location for installation, ensuring it is protected from direct impact and has adequate ventilation.
- Use the provided back bracket as a template to mark drilling points on the wall.
- Drill holes and insert appropriate wall anchors (if necessary).
- Secure the back bracket to the wall using the provided screws.
- Mount the S311 main unit onto the secured back bracket, ensuring it is stable and firmly attached.

Figure 4: Sturdy Back Bracket for Installation
4.2 Electrical Wiring
The S311 charger uses a bottom entry/exit wiring method. All electrical connections must be performed by a certified electrician. Ensure the power supply matches the charger's requirements (AC220V ±20%, 50Hz) and that proper grounding is established. The system will not allow charging without proper grounding.
5. Operating Instructions
The MRCARTOOL S311 features a user-friendly touchscreen display and multiple ways to initiate charging.
5.1 Connecting to Your EV
- Open the charging port cover on your electric vehicle.
- Take the charging gun from its socket on the S311 unit.
- Insert the charging gun firmly into your EV's charging port until it clicks into place.
5.2 Charging Access Options
The S311 offers three methods to start charging:
- Card Swipe Access: Unlock the device and start charging by swiping the provided RFID card over the designated sensor. This prevents unauthorized usage.
- Password Entry: At startup, you can enter a customizable password on the touchscreen to unlock the charger.
- Plug-and-Charge: For immediate charging without authentication, simply connect the charging gun to your EV.

Figure 5: Three Access Options for Charging
5.3 Adjusting Output Current
You can adjust the output current to match your charging environment requirements:
- Access the 'Current Setting' option on the touchscreen display.
- Select your desired current from the available options: 10A, 14A, 16A, 25A, or 32A.
- Confirm your selection.

Figure 6: Adjustable Output Current Settings
5.4 Scheduled Charging
To schedule your charging sessions:
- Navigate to the 'Scheduled Charging' option on the main screen.
- Set your desired start time (hour, minute, second) using the on-screen keypad.
- Confirm the schedule. The charger will automatically begin charging at the specified time.

Figure 7: Scheduled Charging Interface
5.5 Real-time Data Monitoring
The touchscreen display provides real-time data during the charging process, including:
- Charging Duration
- Charged Capacity (kWh)
- Kilometers (estimated range added)
- Current (A)
- Voltage (V)
- Power (KW)
- Temperature (℃)

Figure 8: Real-time Data Monitoring
5.6 Disconnecting from Your EV
- Stop the charging session via the touchscreen interface or by pressing the Emergency Stop Button.
- Carefully remove the charging gun from your EV's charging port.
- Return the charging gun to its socket on the S311 unit and ensure the protective cover is in place.
Video 1: MRCARTOOL S311 EV Charger in operation, demonstrating connection, current adjustment, scheduled charging, and safety features.
6. Safety Features
The MRCARTOOL S311 is equipped with multiple safety protections to ensure a secure charging experience:
- Leakage Protection: Automatically restores power after 3 minutes if triggered.
- Overcurrent Protection: Cuts off power output if current exceeds 35A, automatically restoring after 1 minute.
- Overvoltage Protection: Activates when voltage exceeds 275V, automatically restoring power once stable.
- Undervoltage Protection: Initiated if voltage drops below 88V, automatically restoring power once stable.
- Temperature Protection: Activates if temperature exceeds 83°C, automatically restoring power when it drops to 80°C.
- Grounding Protection: Charging is not allowed without proper grounding.
- Emergency Stop Protection: A dedicated emergency stop switch immediately cuts off power output. Normal operation resumes upon restoring the switch.

Figure 9: Multiple Safety Protections Design
6.1 Waterproof Design
The charger is designed to work reliably in various conditions:
- Control Box: IP65 rated for protection against dust and water jets.
- Charging Gun (Coupling State): IP55 rated for protection against dust and low-pressure water jets.

Figure 10: Waterproof Design
7. Maintenance
Regular maintenance helps ensure the longevity and safe operation of your S311 EV charger:
- Cleaning: Periodically wipe down the main unit and charging gun with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners.
- Cable Inspection: Regularly check the charging cable for any signs of wear, cuts, or damage. If damage is found, discontinue use and contact support.
- Charging Gun Socket: Always return the charging gun to its socket after use and ensure the protective cover is properly placed to keep it clean and ready.

Figure 11: Charging Gun Socket and Protective Cover
8. Troubleshooting
If you encounter issues with your S311 EV charger, refer to the following common problems and solutions:
- Charger Not Powering On:
- Check the main power supply to the charger.
- Ensure all electrical connections are secure (professional inspection recommended).
- Charging Not Starting:
- Verify the charging gun is securely connected to the EV.
- Check the selected charging access method (Card Swipe, Password, or Plug-and-Charge) and ensure proper authentication.
- Confirm the Emergency Stop Button is not engaged.
- Check the display for any error messages.
- Slow Charging:
- Ensure the output current setting is appropriate for your vehicle and power supply. Adjust via the 'Current Setting' menu.
- Verify your vehicle supports the charging rate.
- Error Message on Display:
- Note down the specific error code or message.
- Refer to the safety features section for automatic recovery times for certain protections (e.g., leakage, overcurrent, temperature).
- If the error persists, contact customer support with the error details.
9. User Tips
Maximize your charging experience with these helpful tips:
- Optimize Charging Times: Utilize the scheduled charging feature to charge during off-peak electricity hours, potentially saving on energy costs.
- Secure Access: If the charger is in an accessible location, consider using the password or RFID card access methods to prevent unauthorized use.
- Cable Management: Properly coil and store the 26ft (8m) charging cable after each use to prevent damage and keep the area tidy.
- Environmental Awareness: While waterproof, avoid prolonged exposure to extreme weather conditions when possible to extend the product's lifespan.
10. Warranty and Support
The MRCARTOOL S311 EV Charger comes with a 2-year warranty, ensuring peace of mind regarding product quality and performance. For any technical assistance, warranty claims, or further inquiries, please contact your seller or the manufacturer's customer support. Please have your product model (S311) and purchase details ready when contacting support.





