1. Introduction
Thank you for choosing the Flashfish S25 Portable Power Station. This high-capacity, high-power device is designed to provide reliable electricity for various indoor, outdoor, and emergency needs. Featuring a durable LiFePO4 battery, multiple output options, and fast charging capabilities, the S25 ensures you have power whenever and wherever you need it. Please read this manual thoroughly before using the product to ensure safe and optimal operation.

The Flashfish S25 Portable Power Station is a versatile power solution, equipped with a clear display and a variety of output ports for charging multiple devices simultaneously.
2. Safety Information
Please observe the following safety precautions to prevent injury or damage to the device:
- Do not disassemble, repair, or modify the unit.
- Keep the unit away from fire, water, and extreme temperatures.
- Do not use or store the unit in direct sunlight or high-temperature environments.
- Ensure proper ventilation during use and charging.
- Keep out of reach of children and pets.
- Use only approved accessories and charging cables.
- Avoid dropping or subjecting the unit to strong impacts.
- If the unit emits smoke, strange odors, or unusual noise, stop using it immediately and contact support.
3. Package Contents
Verify that all items are included in your package:
- 1 x Flashfish S25 Portable Power Station
- 1 x AC Charging Cable
- 1 x Car Charging Cable
- 1 x User Manual & Warranty Card

The package includes the main power station unit, essential charging cables for AC and car use, and the user manual with warranty information.
4. Product Features and Components
4.1. Overview of Outputs
The Flashfish S25 offers a wide range of output ports to meet diverse power needs:
- 3x AC Outputs: For household appliances (2000W continuous, 4000W peak).
- 4x USB 3.0 Outputs: For standard USB devices.
- 2x 100W USB-C Outputs: For fast charging compatible smartphones and laptops.
- 2x DC 13.6V/3A Outputs: For DC-powered devices.
- 1x 13.6V/10A Car Socket: For car appliances.
- 1x 3-5W LED Flashlight: Integrated for emergency lighting.

The S25 is designed for versatility, providing power for a wide array of devices, from small electronics to larger appliances, suitable for both indoor and outdoor use.
4.2. Integrated LED Light and Storage Box
The top lid of the S25 features a convenient storage space, ideal for keeping charging cables and small accessories organized. Within this storage area, an integrated LED light provides instant illumination, useful during power outages, camping, or nighttime repairs.

The top compartment of the S25 serves as both a storage solution for small items and houses a built-in LED light for convenience.
5. Specifications
| Category | Specification |
|---|---|
| Brand | FF Flashfish |
| Type | Portable Power Station |
| Model | S25 |
| Color | Gray |
| Capacity | 52000mAh/38.4V, 1997Wh |
| EU AC Output | Total 2000W (Peak 4000W), 220V-240V, 50/60Hz |
| USB Output (Total 115W Max) | USB-A2 (x2): 5V 2.6A (13W Max) USB-A1 (x2): QC3.0, 5V 2A, 9V 2A, 12V 2A (24W Max) Type-C (x2): 5V 3A, 9V 3A, 12V 3A, 15V 3A, 20V 5A (100W Max) |
| DC Output (Total 136W Max) | Car Charger Output: 13.6V 10A (136W Max) DC5521 (x2): 13.6V 3A (40.8W Max) |
| AC Charge Input Power | E-speed Charge 1600W MAX |
| EU AC Input Voltage | 220-240V AC, 50/60Hz |
| DC Charger Input | 10-65V 800W Max |
| Cell Chemistry | LiFePO4 |
| Discharge Temperature | -4°F~131°F ± 5°F (-20°C~55°C ± 3°C) |
| Charge Temperature | 32°F~131°F ± 5°F (0°C~55°C ± 3°C) |
| Life Span | 3000 Cycles 80% |
| Product Weight | 19.5kg (43 lbs) |
| Package Weight | 21.6kg |
| Product Size (L x W x H) | 40.2 x 23.1 x 30 cm |
| Package Size (L x W x H) | 46 x 31 x 41 cm |
Table 1: Flashfish S25 Technical Specifications
6. Setup
6.1. Initial Charging
Before first use, fully charge your Flashfish S25. This helps to calibrate the battery and ensures optimal performance.
- AC Charging: Connect the provided AC charging cable to the AC input port on the S25 and then to a wall outlet. The unit supports 1600W E-speed charging, reaching 80% capacity in approximately 1 hour.
- Solar Charging: Connect compatible solar panels (sold separately, 10-65V, up to 800W Max) to the DC input port. The S25 can be fully recharged in 2.5-3 hours with optimal sunlight.
- Car Charging: Use the provided car charging cable to charge the S25 from your vehicle's cigarette lighter socket.

The S25 supports rapid charging via AC input, significantly reducing downtime.

For off-grid power, the S25 can be efficiently charged using solar panels, making it ideal for outdoor adventures.

The S25 offers flexible charging methods, including solar and car charging, to ensure power availability wherever you are.
6.2. Placement
Place the power station on a stable, flat surface with adequate ventilation. Avoid placing it near heat sources, in direct sunlight, or in enclosed spaces that could restrict airflow.
7. Operating Instructions
7.1. Turning On/Off
Press and hold the main power button for a few seconds to turn the unit ON or OFF. The display will illuminate when the unit is on, showing battery level and output status.
7.2. Using AC Outputs
Press the AC power button to enable the AC outlets. Plug your appliances into the AC ports. Ensure the total power consumption does not exceed 2000W (4000W peak). Press the AC power button again to turn off the AC outputs when not in use.

The S25 can power a wide range of household appliances, making it suitable for both daily use and emergencies.
7.3. Using DC/USB Outputs
Press the DC or USB power button to enable the respective output ports. Plug your devices into the appropriate USB-A, USB-C, DC5521, or car socket ports. Press the button again to turn off the outputs when not in use.
7.4. UPS Function (Uninterruptible Power Supply)
When the S25 is connected to a wall outlet via its AC input and also has devices plugged into its AC outputs, it can function as an Uninterruptible Power Supply (UPS). In the event of a power outage, the S25 will automatically switch to battery power within <20 milliseconds, ensuring continuous operation for connected critical devices like computers or medical equipment.

The S25 provides seamless power backup, automatically switching to battery power during outages to protect sensitive electronics.
7.5. LED Light Operation
Locate the LED light button on the unit. Press it once to turn on the light. Subsequent presses may cycle through different brightness levels or flash modes (if available). Press and hold to turn off the LED light.
8. Maintenance
- Cleaning: Use a dry, soft cloth to wipe the exterior of the unit. Do not use abrasive cleaners or immerse the unit in water.
- Storage: Store the S25 in a cool, dry place, away from direct sunlight and extreme temperatures. For long-term storage, charge the unit to 50-80% every 3-6 months to prolong battery life.
- Battery Care: The LiFePO4 battery is designed for over 3000 charge cycles to 80% capacity. Avoid fully discharging the battery frequently to maximize its lifespan.
9. Troubleshooting
- Unit not turning on: Ensure the battery is charged. If not, connect to an AC outlet or solar panel for charging.
- No output from ports: Make sure the specific output (AC, DC, USB) is enabled by pressing its respective button. Check if the device being charged is functioning correctly and its power draw is within the S25's limits.
- Slow charging: Verify that the charging cable and power source are adequate. For solar charging, ensure panels are in direct sunlight and correctly angled.
- Overload warning: If an overload warning appears, disconnect some devices to reduce the total power draw. The unit will automatically reset once the load is reduced.
- Unusual noise or smell: Immediately turn off the unit and disconnect all devices and charging cables. Contact customer support.
10. User Tips
- Optimize Solar Charging: For best results, position solar panels to face the sun directly and adjust their angle throughout the day.
- Monitor Power Consumption: Keep an eye on the display to manage your power usage and avoid overloading the unit, especially with high-wattage appliances.
- Emergency Preparedness: Keep the S25 charged and ready for unexpected power outages. Its UPS function can be invaluable for essential home devices.
- Travel Companion: The S25's robust design and multiple charging options make it an excellent power source for camping, RV trips, and remote work.
11. Warranty and Support
The Flashfish S25 Portable Power Station comes with a standard warranty. Please refer to the included warranty card for specific terms and conditions. For technical support, troubleshooting assistance, or warranty claims, please contact Flashfish customer service through the details provided on your warranty card or the official Flashfish website.





