1. Important Safety Information
Always observe the following safety precautions to prevent injury or damage to the device and vehicle.
- Do not attempt to jump-start a frozen battery.
- Ensure proper polarity connection (red clamp to positive, black clamp to negative) to avoid sparks or damage.
- Do not allow the red and black clamps to touch each other.
- Keep the device away from children.
- Do not expose the device to rain or extreme moisture.
- Do not disassemble the device. Contact customer support for service.
- Avoid continuous use of the air compressor to prevent overheating. Allow it to cool down if it becomes hot.
- Charge the device fully before first use and recharge every few months to maintain battery health.
2. Package Contents
Verify that all items are present in your package:
- 1x Huieo MY03SH Car Jump Starter with Air Compressor
- 1x Smart Jumper Cable
- 1x Type-C Charging Cable
- 1x EVA Storage Bag
- 1x Air Tube (Inflation Hose)
- 4x Air Nozzles (various types)
- 1x User Manual (this document)

Image: Contents of the Huieo MY03SH package, including the jump starter, smart jumper cables, charging cable, air tube, various nozzles, and storage bag.
3. Product Overview
Familiarize yourself with the main components of your Huieo MY03SH device.

Image: Front view of the Huieo MY03SH device, showing the LCD display and control buttons on the side.
- LCD Display: Shows battery level, pressure readings, and selected modes.
- Control Buttons: Power, mode selection, pressure adjustment (+/-).
- Jump Start Port: For connecting smart jumper cables.
- Air Compressor Port: For connecting the air tube.
- USB Output Port: For charging external devices.
- Type-C Input Port: For charging the jump starter itself.
- LED Light: Flashlight, SOS, and Strobe modes.
4. Charging the Device
Before first use, fully charge the Huieo MY03SH. It is recommended to recharge the device every 3-6 months to maintain optimal battery performance, even if not in use.
- Connect the Type-C charging cable to the device's Type-C input port.
- Connect the other end of the cable to a suitable USB power adapter (not included).
- The LCD display will indicate the charging status. Charge until the battery indicator shows full.
Note: A full charge may take several hours.
5. Operating the Jump Starter
5.1. Preparation
- Ensure the jump starter is at least 50% charged.
- Turn off the vehicle's ignition and all accessories.
- Place the vehicle in "Park" (automatic) or "Neutral" (manual) and engage the parking brake.
5.2. Jump Starting Procedure
- Connect the smart jumper cable to the jump start port on the Huieo MY03SH device.
- Connect the red (+) clamp to the positive terminal of the vehicle's battery.
- Connect the black (-) clamp to the negative terminal of the vehicle's battery.
- Ensure the smart jumper cable indicator light is green, indicating a safe connection. If it's red or flashing, check connections and battery voltage.
- Start the vehicle's engine.
- Once the engine starts, immediately remove the smart jumper cable's black (-) clamp from the battery, then the red (+) clamp.
- Disconnect the smart jumper cable from the jump starter device.

Image: The Huieo MY03SH jump starter connected to a car battery using the smart jumper cables, ready for jump-starting.
The Huieo MY03SH supports jump-starting for various 12V vehicles, including cars, SUVs, motorcycles, trucks, minivans, and electric vehicles.

Image: Diagram illustrating the compatibility of the Huieo MY03SH jump starter with various 12V vehicle types, including cars, SUVs, motorcycles, and trucks.
6. Operating the Air Compressor
6.1. Preparation
- Ensure the jump starter is adequately charged.
- Identify the correct air nozzle for the item you wish to inflate.
6.2. Inflation Procedure
- Select the corresponding air nozzle and screw it onto the air tube.
- Connect the air tube to the air compressor port on the Huieo MY03SH device.
- Attach the air tube securely to the tire valve or inflatable item. The LCD display will show the current pressure.
- Press the power button to turn on the device.
- Press the mode selection button to choose the desired inflation mode (Car, Bicycle, Basketball, Inflatable Cushion).
- Use the '+' and '-' buttons to set the target pressure.
- Press the inflation button to start inflation. The compressor will automatically stop when the preset pressure is reached.
- Disconnect the air tube from the item and the device.

Image: The Huieo MY03SH device connected to a car tire valve, displaying the inflation process on its LCD screen.
The device features 4 pre-selected modes for different inflation needs: Car, Bicycle, Basketball, and Inflatable Cushion. It can inflate a car tire (205/55 R16) from 0 to 2.5 bar in approximately 5 minutes.

Image: Infographic detailing the inflation capabilities of the Huieo MY03SH, showing different inflation modes (car, motorcycle, bicycle, ball) and approximate inflation times for various items.
Important: Do not use the air pump function continuously for extended periods. If the device becomes seriously hot, allow it to cool down for a few minutes before resuming inflation.
7. Portable Power Bank Function
The Huieo MY03SH can also serve as a power bank to charge your electronic devices.
- Ensure the device is powered on.
- Connect your electronic device (e.g., smartphone, tablet) to the USB output port using a compatible USB cable.
- The device will begin charging your electronic device.

Image: The Huieo MY03SH device connected via USB to a smartphone, demonstrating its power bank functionality.
8. Emergency LED Light
The built-in LED light offers three modes for various situations.
- Press and hold the light button for 3 seconds to turn on the flashlight mode.
- Press the light button again to cycle through the modes: Flashlight > SOS > Strobe.
- Press and hold the light button again to turn off the light.

Image: A collage showing the Huieo MY03SH device in various emergency lighting scenarios, including flashlight, SOS, and strobe modes.
9. Maintenance and Storage
- Clean the device with a dry, soft cloth. Do not use harsh chemicals or abrasives.
- Store the device in its EVA bag in a cool, dry place, away from direct sunlight and extreme temperatures.
- Recharge the device every 3-6 months to prolong battery life, even if not in use.
- Ensure all ports are free from dust and debris.
The device is designed to operate in extreme temperatures from -4°F (-20°C) to 140°F (60°C).

Image: Depiction of the Huieo MY03SH jump starter functioning reliably in both cold winter conditions (-40°C) and hot summer environments (60°C), highlighting its robust design.
10. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery or device is off. | Charge the device. Press and hold the power button to turn it on. |
| Vehicle does not jump-start. | Incorrect clamp connection, low device battery, or severely damaged vehicle battery. | Check polarity of clamps. Ensure device is sufficiently charged. Consult a mechanic if vehicle battery is severely damaged. |
| Air compressor does not inflate or stops prematurely. | Air tube not securely connected, incorrect pressure setting, or device overheating. | Ensure air tube is tightly connected. Verify preset pressure. Allow device to cool down if hot. |
| Smart jumper cable indicator is red/flashing. | Reverse polarity, short circuit, or low voltage. | Check clamp connections for correct polarity. Ensure clamps are not touching. If issue persists, vehicle battery may be too low or faulty. |
11. Specifications
| Feature | Detail |
|---|---|
| Model | MY03SH |
| Peak Current | 1200A |
| Startup Voltage | 12V |
| Battery Capacity | 10400mAh |
| Max Inflation Pressure | 150PSI |
| Cylinder Diameter | 22mm |
| USB Output/Input | Input 5V/2A, Output 5V/2A QC3.0 |
| Operating Temperature | -4°F to 140°F (-20°C to 60°C) |
| Dimensions | 11.99 x 18.49 x 6.5 cm |
| Weight | 787 g |

Image: A summary table of the Huieo MY03SH jump starter's key specifications, including model, battery capacity, peak current, inflation pressure, and USB output details.
12. Warranty and Support
Huieo offers a 1-Year warranty, lifetime technical support, and customer service for this product.
For technical assistance or warranty claims, please contact Huieo customer support through the retailer where the product was purchased or visit the official Huieo website.