MEGAWISE G23
MEGAWISE 1500A Peak 16800mAh Car Battery Jump Starter Booster
Model: G23
Introduction
This user manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your MEGAWISE 1500A Peak 16800mAh Car Battery Jump Starter Booster. Please read this manual thoroughly before first use and keep it for future reference.
What's in the Box
Verify that all items listed below are included in your package:
- MEGAWISE Jump Starter Unit
- Smart Jumper Clamp Cable
- USB to Type-C Charging Cable
- Heavy-Duty Carry Bag
- User Manual

Figure 1: Package Contents. The image displays the jump starter unit, smart clamp cable, USB to Type-C charging cable, and the carry bag.
Important Safety Information
Always observe the following safety precautions to prevent electric shock, explosion, fire, or injury:
- Read all instructions before using the product.
- Do not operate the unit if it is damaged.
- Keep out of reach of children.
- Do not expose the unit to rain or extreme temperatures.
- Ensure proper polarity connection to avoid short circuits.
- Avoid excessive discharge of the unit to prolong its lifespan.
- Use only the provided smart jumper clamps.
- Do not attempt to disassemble or modify the unit.
This device features advanced safety protections against short circuits, overcurrent, overload, overvoltage, overcharge, and high temperatures, ensuring safe operation for both you and your vehicle.
Setup and Initial Charge
Before using your MEGAWISE Jump Starter for the first time, it is recommended to fully charge the unit.
- Connect the provided USB to Type-C charging cable to the "In (Out)" port on the jump starter.
- Plug the other end of the USB cable into a compatible USB power adapter (not included) or a computer's USB port.
- Allow the unit to charge until all four power indicator lights are solid blue, indicating a full charge. This may take several hours.
The 16800mAh battery retains its charge for up to 6 months, but regular recharging is recommended to maintain optimal performance.
Operating Instructions
Jump-Starting a Vehicle
Follow these steps to safely jump-start your vehicle:
- Ensure the jump starter unit is sufficiently charged (at least 50% recommended).
- Connect the smart jumper clamp cable to the jump starter unit's dedicated port.
- Attach the red (+) clamp to the positive terminal of your vehicle's battery.
- Attach the black (-) clamp to the negative terminal of your vehicle's battery. The smart clamp's LCD screen will display the battery voltage.
- Press the "ENGINE START" button on the jump starter unit.
- Start your vehicle's engine.
- Once the engine starts, immediately remove the clamps from the vehicle battery, then disconnect the smart clamp cable from the jump starter unit.

Figure 2: Plug the Jumper Cable.

Figure 3: Connect the Jumper Clamps.

Figure 4: Turn the Ignition Key.

Figure 5: Remove the Clamps.
Charging Electronic Devices
The jump starter can also function as a portable power bank for your electronic devices.
- Connect your phone, tablet, camera, or other USB-powered device to one of the two USB output ports (Output 1: Quick Charge 3.0, Output 2: 5V/2.1A).
- The unit will automatically begin charging your device.

Figure 6: Smart Portable Charger. The device can charge various electronic gadgets.
Using the LED Flashlight
The built-in LED flashlight offers multiple modes for different situations:
- Press the power button once to turn on the flashlight (solid light mode).
- Press the power button again to switch to Strobe mode.
- Press the power button a third time to activate SOS mode.
- Press the power button a fourth time to turn off the flashlight.

Figure 7: LED Flashlight Modes. Useful for outdoor enthusiasts and emergencies.
Maintenance and Storage
Proper maintenance ensures the longevity and reliability of your jump starter:
- Recharging: Recharge the unit every 3-6 months, even if not used, to maintain battery health.
- Cleaning: Wipe the unit with a dry, soft cloth. Do not use harsh chemicals or abrasive materials.
- Storage: Store the jump starter in its heavy-duty carry bag in a cool, dry place, away from direct sunlight and extreme temperatures.
Troubleshooting
If you encounter issues with your jump starter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not turn on. | Battery is completely discharged. | Charge the unit fully using the provided USB-C cable. |
| Vehicle does not start after jump-starting. | Incorrect clamp connection, severely dead battery, or vehicle issue. | Check clamp polarity. Ensure battery terminals are clean. If issues persist, consult a mechanic. |
| Smart clamp displays an error message. | Safety protection activated (e.g., reverse polarity, short circuit, overcurrent). | Refer to the smart clamp's built-in screen for specific error codes and consult the manual for detailed explanations. Correct the issue before attempting to jump-start again. |
| Flashlight not working. | Unit is off or battery is low. | Press the power button to activate. Recharge the unit if battery is low. |

Figure 8: Smart Jumper Clamp Diagnostics. The LCD screen provides real-time battery status and error messages.
Specifications
| Feature | Detail |
|---|---|
| Model | G23 |
| Peak Current | 1500A |
| Battery Capacity | 16800mAh |
| Engine Compatibility (Gas) | Up to 7.0L |
| Engine Compatibility (Diesel) | Up to 5.0L |
| USB Output 1 | Quick Charge 3.0 |
| USB Output 2 | 5V/2.1A |
| DC Output | 12V-16V/10A |
| Operating Temperature | -4°F to 140°F (-20°C to 60°C) |
| Dimensions | 6.5 x 3.5 x 1.5 inches |
| Weight | 1.3 Pounds |
| Safety Rating | UL2743 / CE / FCC / RoHs |
Warranty and Support
MEGAWISE is committed to providing quality products and excellent customer care.
- Warranty: This product comes with a 2-year warranty.
- Technical Support: Lifetime technical support is available.
- Customer Service: For any questions or assistance, please contact MEGAWISE customer service.
For more information or to reach support, please visit the official MEGAWISE store or contact them via the details provided in your product packaging.
Note: Information regarding specific contact methods (phone, email, live chat) is typically found in the physical user manual or on the brand's official website.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.