Introduction
The ROMOSS Portable Power Station 500W is a versatile and reliable power solution designed for various applications, including camping, outdoor activities, car use, and home emergencies. This manual provides essential information for safe and efficient operation, ensuring you get the most out of your device.
What's in the Box
Upon opening your ROMOSS Portable Power Station package, please verify that all the following components are included:
- 1 x ROMOSS Explorer 500 Portable Power Station
- 1 x AC Adapter
- 1 x Car Adapter-DC Cable
- 1 x User Manual

Contents of the ROMOSS Portable Power Station package, including the power station, AC adapter, car adapter, and user manual.
Product Overview
The ROMOSS Portable Power Station 500W is engineered for robust performance and portability. It features a 400Wh lithium-ion battery pack, capable of delivering a continuous 500W AC output with a peak surge capacity of up to 1000W. Weighing only 9.41 lbs and equipped with a convenient foldable handle, it is an ideal companion for various power needs.

The power station's compact design and lightweight construction make it highly portable.

The R-MAX Multiplier Drive Technology ensures a stable and doubled power supply for various devices.

Detailed view of the multiple output ports available on the power station.
Official product video demonstrating the features and usage of the ROMOSS Portable Power Station RS500, including unboxing, port overview, and charging capabilities.
Key Features
- Safe and Stable Power: Equipped with a 400Wh lithium-ion pack, providing 500W AC output with a surge capacity of up to 1000W.
- Wireless Charging: Features a convenient 10W wireless phone charging station integrated on the top surface.
- Multiple Outputs: Offers diverse connectivity with 1 Wireless charge (10W Max), 1 AC plug extension outlet (500W Max), 1 PD 60W USB-C port, 3 USB-A surge protector outlets (18W Max), and 1 car port (120W Max).
- Fast Recharging Options: Can be fully recharged via a wall outlet (approx. 4.0 hours), car adapter (approx. 6.7 hours), or a compatible solar charger (approx. 4.0 hours, solar panel sold separately).
- Integrated LED Lights: Includes two LED lights for illumination: one on the handle for reading and another on the side with multiple brightness and SOS modes for emergencies.

The ROMOSS Portable Power Station 500W, showcasing its compact design and integrated handle for easy transport.
Initial Setup
Follow these steps to prepare your power station for first use:
- Unboxing: Carefully remove the power station and all accessories from the packaging. Confirm that all items listed in the "What's in the Box" section are present and undamaged.
- Initial Charge: It is highly recommended to fully charge the power station before its first use. Connect the provided AC adapter to the DC input port on the unit and plug it into a standard wall outlet. The LCD screen will display the charging progress.
- Familiarization: Take a moment to locate all input/output ports, control buttons, and the LCD display. Refer to the "Product Overview" section for a visual guide.
Operating Instructions
Powering On/Off
To turn the unit on or off, press and hold the main power button (usually marked with a power symbol) for approximately 3 seconds. The LCD screen will illuminate upon activation.
Checking Battery Level
The current battery level (State of Charge - SoC) is clearly displayed on the LCD screen, allowing you to monitor remaining power.
Using AC Output
To activate the AC outlet, press the dedicated AC output button. Plug your AC-powered device into the outlet. The power station supports devices up to 500W continuous output, with a surge capability of 1000W.
Using DC/USB Outputs
For DC (car port) or USB devices, press the corresponding DC or USB button to enable the ports. Connect your devices to the appropriate output ports.
Wireless Charging
Place your Qi-compatible smartphone centrally on the wireless charging pad located on the top of the power station. Ensure proper alignment for efficient charging.
LED Lights
Press the light button (marked with a lightbulb symbol) to cycle through the available LED light modes, including different brightness levels and an SOS signal.
Recharging the Power Station
- AC Wall Outlet: Connect the AC adapter to the input port and a standard wall outlet. A full charge typically takes approximately 4.0 hours.
- Car Adapter: Use the provided car adapter to charge the unit from your vehicle's 12V car outlet. This method takes approximately 6.7 hours for a full charge.
- Solar Panel (Sold Separately): Connect a compatible solar panel (DC 12-28V input) to the input port. Charging time is approximately 4.0 hours, depending on solar intensity and panel wattage.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your power station:
- Storage: Store the power station in a cool, dry environment, away from direct sunlight, high humidity, and extreme temperatures.
- Regular Charging: To maintain battery health, fully charge the unit every 3-6 months, even if it has not been used.
- Cleaning: Use a soft, dry cloth to clean the exterior surfaces. Avoid using abrasive cleaners or immersing the unit in water.
- Ventilation: Ensure that the ventilation vents are clear of any obstructions during operation and charging to prevent overheating.
Troubleshooting
If you encounter any issues with your ROMOSS Portable Power Station, refer to the table below for common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on | Battery is depleted | Recharge the power station fully. |
| AC output not working | AC output not enabled | Press the AC output button to activate it. |
| Device not charging | Incorrect port/cable or device incompatibility | Ensure the correct port and cable are used; check device power requirements and compatibility. |
| Overload protection activated | Connected device exceeds wattage limit | Disconnect the high-wattage device, restart the power station, and connect a device within the specified wattage limits. |
For further assistance or issues not covered here, please contact ROMOSS customer support.
Technical Specifications
| Feature | Specification |
|---|---|
| Model Name | RS500 |
| Battery Type | Lithium-Ion |
| Battery Capacity | 400Wh |
| AC Output | 500W (1000W Surge) |
| DC Input (Charging) | 12-28V |
| USB-C Output | PD 60W Max |
| USB-A Output | 3 x 18W Max |
| Car Port Output | 120W Max |
| Wireless Charging | 10W Max |
| Item Weight | 9.41 Pounds |
| Product Dimensions | 6.61"L x 7.01"W x 9.06"H |
| Voltage | 120 Volts |
| Frequency | 60 Hz |
Warranty and Support
The ROMOSS Portable Power Station RS500 is covered by a 12-month warranty from the original date of purchase, ensuring peace of mind regarding manufacturing defects.
For technical support, warranty claims, or any product-related inquiries, please visit the official ROMOSS website or contact their dedicated customer service team. Please retain your purchase receipt as proof of purchase for all warranty-related services.



