1. Product Overview
The BESTEK 200W Power Inverter is designed to convert 12V DC power from your vehicle's cigarette lighter socket into 110V AC power, allowing you to operate and charge various electronic devices on the go. It provides 200 watts of continuous power and a peak output of 500 watts. This compact device is equipped with multiple output options to meet diverse power needs.

Figure 1.1: The BESTEK 200W Power Inverter, featuring three AC outlets and four USB charging ports, connected via its cigarette lighter plug.
2. Key Features
- High Power Output: Delivers 200 watts continuous DC to AC power and 500 watts peak output, suitable for charging multiple electronic devices.
- Versatile Charging: Features 3 AC outlets and 4 USB charging ports (4.2A total output) for simultaneously powering up to 7 devices.
- Compact and Portable Design: Its ultra-compact size and 2.5-foot cigarette lighter plug make it convenient for use in vehicles, campsites, or any location requiring portable power.
- Multi-Protection System: Equipped with built-in fuses and a cooling fan, offering protection against low battery alarm, low battery shutdown, overload, and short circuits.
- Wide Compatibility: Ideal for smartphones, laptops, tablets, GPS units, portable TVs, battery chargers, and various small household appliances.

Figure 2.1: Four USB charging ports for various devices.

Figure 2.2: Three AC outlets with ample spacing.

Figure 2.3: Compact design for easy portability.
3. Setup Instructions
- Vehicle Compatibility: Ensure your vehicle has a 12V DC cigarette lighter socket. This inverter is not designed for 24V DC systems.
- Insert Plug: Firmly insert the inverter's cigarette lighter plug into your vehicle's 12V accessory socket. Ensure a secure connection.
- Power On: Once connected, switch the inverter's power button to the "ON" position. A small indicator light will illuminate, confirming the inverter is receiving power.
- Connect Devices: Plug your AC-powered devices into the 110V AC outlets or your USB-powered devices into the USB charging ports.

Figure 3.1: Inverter in use within a vehicle, charging multiple devices.
4. Operating Instructions
- Powering AC Devices: Connect your AC appliances (up to 200W total) to the 3-prong AC outlets. Ensure the total wattage of all connected devices does not exceed 200W.
- Charging USB Devices: Connect your USB devices to any of the four USB ports. The ports provide a combined output of 4.2A for efficient charging.
- Optimal Performance: For best performance, ensure your vehicle's engine is running when using the inverter for extended periods or with high-power devices to prevent draining the car battery.
- Power Off: When not in use, switch the inverter off and disconnect it from the vehicle's cigarette lighter socket.
5. Safety Precautions
To ensure safe operation and prolong the life of your inverter and connected devices, please observe the following precautions:
- Do not expose the inverter to water, rain, or snow.
- Do not operate the inverter if it has been dropped or damaged.
- Keep the inverter away from flammable materials, gases, or liquids.
- Ensure adequate ventilation around the inverter. Do not block the cooling fan or vents.
- Do not attempt to open or modify the inverter. There are no user-serviceable parts inside.
- The inverter features built-in protections against low battery voltage, over-voltage, overload, and short circuits. If a protection mode is triggered, the inverter may shut down. Disconnect devices and restart.

Figure 5.1: Internal protection circuits for voltage regulation.
6. Maintenance
- Cleaning: Use a dry, soft cloth to clean the exterior of the inverter. Do not use abrasive cleaners or solvents.
- Storage: Store the inverter in a cool, dry place away from direct sunlight and extreme temperatures when not in use.
- Ventilation: Periodically check that the cooling fan and vents are free from dust and debris to ensure proper airflow.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power output from AC outlets or USB ports. | Inverter not turned on; loose connection; vehicle battery low; overload protection activated; internal fuse blown. | Ensure inverter is ON. Check cigarette lighter connection. Start vehicle engine to recharge battery. Reduce connected load. Contact customer service if fuse is suspected. |
| Low battery alarm sounds. | Vehicle battery voltage is low. | Start vehicle engine to recharge battery. Disconnect inverter if engine cannot be started. |
| Inverter shuts down automatically. | Overload, over-temperature, or low/high voltage protection activated. | Reduce connected load. Ensure proper ventilation. Check vehicle battery voltage. Allow inverter to cool down. |
| Fan is noisy or not running. | Dust accumulation; fan malfunction. | Clean vents. If fan still malfunctions, contact customer service. |
8. Specifications
| Model: | MRI2011GUBK |
| Input Voltage: | DC 12V |
| Continuous Power: | 200W |
| Peak Power: | 500W |
| AC Output Voltage: | 110V AC |
| USB Output: | 4.2A (4 ports total) |
| Dimensions (L x W x H): | 6.2 x 3.3 x 1.4 inches |
| Weight: | 9.6 ounces |
| Recommended Use: | Vehicle |
9. Warranty and Customer Support
The BESTEK 200W Power Inverter comes with an 18-month warranty from the date of purchase. This warranty covers manufacturing defects and workmanship. For any product inquiries, technical support, or warranty claims, please contact BESTEK customer service.
Please refer to the contact information provided on the official BESTEK website or your purchase documentation for the most up-to-date support channels.
Website: Visit the BESTEK Store on Amazon







