1. Introduction
The OUPES Mega 2 2500W Portable Power Station with 2048Wh B2 Smart Extra Battery is a versatile and powerful energy solution designed for various applications, from home backup to outdoor adventures. Its robust LiFePO4 battery technology ensures long-lasting performance and reliability.

The OUPES Mega 2 Portable Power Station with its B2 Smart Extra Battery, showcasing its stackable design and connection cable.

Detailed view of the OUPES Mega 2's 15-in-1 power hub, highlighting various output ports including AC, USB, and Anderson connectors.
Key Features:
- Long-lasting LiFePO4 Battery: Ensures a lifespan of more than 3500 cycles at 80% capacity, offering up to 7 times longer life than typical batteries and a projected lifespan of 10+ years.
- Expandable Capacity: The Mega 2's capacity can be quadrupled from 2kWh up to 10kWh with the addition of up to 4 extra B2 batteries, allowing customization based on energy needs.
- Versatile Power Output: Features 2048Wh capacity and supports charging up to 16 devices simultaneously, including 5 AC outlets with continuous 2500W pure sine wave output, suitable for appliances like refrigerators and CPAP machines.
- Rapid Recharging: Utilizes proprietary OP upgraded tech, combining up to 2100W solar input with 1600W AC for world-leading charging speeds. Achieves a full charge in only 36 minutes (AC+Solar) or 1.3 hours (AC only).
Official OUPES video showcasing the Mega 2 Portable Power Station's features and versatility.
2. Setup
2.1 Initial Charging
Before first use, it is recommended to fully charge your OUPES Mega 2. You can charge it via AC wall outlet or solar panels.
- Connect the provided AC charging cable to the AC input port on the power station and then to a wall outlet.
- For solar charging, connect compatible solar panels to the solar input port. Ensure proper polarity (positive to positive, negative to negative).

Diagram illustrating the various rapid recharge options for the OUPES Mega 2, including AC, solar, and combined AC+Solar charging.
2.2 Connecting Solar Panels
The OUPES Mega 2 supports solar input for charging. Follow these steps to connect your solar panels:
- Ensure your solar panels are compatible with the Mega 2's input specifications (2100W MPPT solar input).
- Use the provided MC4 to Anderson adapter cable to connect your solar panels to the power station's solar input port.
- For multiple solar panels, you may need to connect them in series or parallel using appropriate connectors (Y-branch connectors) to match the required voltage and current for optimal charging.
Video guide on how to connect multiple solar panels in series to the OUPES Mega 2.
Video guide on how to connect OUPES solar panels to the Mega Series power stations.
3. Operating Instructions
3.1 Powering On/Off
To power on the unit, press and hold the 'POWER' button until the display illuminates. To power off, press and hold the 'POWER' button again until the display turns off.
3.2 Using Output Ports
The Mega 2 offers various output ports for different devices:
- AC Outlets: For standard household appliances (up to 2500W continuous).
- USB-A & Type-C Ports: For charging mobile devices, laptops, and other USB-powered gadgets.
- 12V/30A Anderson Port: Ideal for RV batteries and other high-current 12V devices.
- 12V/10A Car Output & DC5521 Output: For car appliances and other DC-powered devices.

Image demonstrating the OUPES app interface for remote control and real-time monitoring of the power station.
3.3 Adjusting Charging Speed
You can adjust the AC charging speed (high/low) to suit your needs. This is particularly useful when you need faster charging or want to reduce power draw from the grid.
Video tutorial on how to set the high or low charging speed for the OUPES Mega 2.
4. Maintenance
To ensure the longevity and optimal performance of your OUPES Mega 2, follow these maintenance guidelines:
- Storage: Store the power station in a cool, dry place away from direct sunlight and extreme temperatures.
- Charging: For long-term storage, charge the unit to approximately 50-80% every 3-6 months to maintain battery health.
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use harsh chemicals or abrasive materials. Ensure all ports are free of dust and debris.
- Ventilation: Ensure proper ventilation around the unit during operation and charging to prevent overheating. Do not block the ventilation openings.
5. Troubleshooting
This section addresses common issues you might encounter with your OUPES Mega 2. If the problem persists, please contact OUPES customer support.
5.1 Bluetooth Connection Issues
Some users may experience difficulty connecting the unit to the OUPES mobile application via Bluetooth.
- Ensure the power station is turned on and within close proximity to your mobile device.
- Try restarting your mobile device's Bluetooth and the OUPES app.
- If issues persist, try resetting the unit's IoT (Internet of Things) connection by pressing and holding the IoT button for three seconds, then pressing it again to re-enable. Ensure all cables are unplugged before attempting to reset the unit.
5.2 Solar Input Not Reaching Advertised Wattage
Users have reported that the solar input may not always reach the maximum advertised 2100W.
- Verify that your solar panels are correctly connected in series or parallel to match the required voltage and current limits (e.g., not exceeding 15A or 150V).
- Ensure optimal sunlight exposure and angle for your solar panels. Shading or cloudy conditions will significantly reduce input.
- Check all cable connections for secure fit and proper polarity.
- If the battery level drops below 1%, the unit may enter an error mode and require reconnection of panels to resume charging.
6. Specifications
Feature | Detail |
---|---|
Brand | OUPES |
Model Name | Mega 2 + B2 |
Wattage | 2500 watts |
Output Wattage | 2500 Watts |
Voltage | 120 Volts (AC) |
Power Source | Battery Powered |
Item Weight | 48.5 Pounds |
Product Dimensions | 18.1"L x 10.6"W x 12"H |
Total Power Outlets | 15 |
Special Features | 12V/30A Anderson for RV batteries, 10.24kWh expandable capacity, Smart APP control + <20ms UPS, 3700W Max charging (AC+Solar), 2100W MPPT solar input |
Included Components | 1x Car lighter to Anderson adapter cable + 1x DC7909 to Anderson adapter cable + 1x MC.4 to Anderson adapter cable, 1x B2 smart extra battery, 1x Mega 2 portable power station, 1x AC charging cable + 1x Anderson extension cable + 1x Extra battery cable, 1x User Manual |
7. Warranty and Support
The OUPES Mega 2 Portable Power Station comes with a 5-year warranty, ensuring long-term peace of mind for your investment.
For technical support, troubleshooting assistance, or warranty claims, please contact OUPES customer support directly. You can find more information and contact details by visiting the official OUPES Store: