1. Introduction
The FOXSUR FJS-800 is a compact, multi-functional jump starter designed for cars, trucks, and motorboats. It provides a powerful and instant start for vehicles with dead batteries, and also serves as a portable power bank for charging digital devices, featuring a built-in flashlight and wireless charging capabilities. Its robust design and advanced safety features make it an essential tool for emergency situations and outdoor adventures.
2. Package Contents
Please check the package for the following items:
- FOXSUR FJS-800 Jump Starter Unit
- Smart Battery Clamps (Red for positive, Black for negative)
- Multi-charging Cable (USB to Type-C, Micro USB, Lightning)
- Protective Carrying Case
- User Manual (this document)
3. Product Features and Components
The FOXSUR FJS-800 is equipped with several features for convenience and safety:
- High Peak Current: Up to 900A for reliable vehicle starting.
- Wide Compatibility: Suitable for 12V gasoline engines up to 6.0L and diesel engines up to 4.0L.
- Multi-Protection System: 9 types of protection, including overcharge, reverse connection, short circuit, and over-temperature.
- Emergency Lighting: Built-in LED flashlight with multiple modes (normal, strobe, SOS).
- Portable Power Bank: Two USB outputs (5V/2.0A) for charging smartphones, tablets, and other digital devices.
- Wireless Charging: Integrated wireless charging pad for compatible devices.
- Intelligent Display: Clear digital display showing battery status and output information.
- Durable Design: Lithium-polymer battery for small size, light weight, and long service life, housed in a robust casing.
- Extreme Temperature Operation: Capable of starting engines in temperatures as low as -40°C.
4. Specifications
| Feature | Specification |
|---|---|
| Model | FJS-800 |
| Start Current | 600A |
| Peak Current | 900A |
| USB Output | 5V/2.0A (x2) |
| Input | 5V/2.0A (Type-C) |
| Battery Capacity | 20800mAh |
| Engine Compatibility | 12V Gasoline up to 6.0L, 12V Diesel up to 4.0L |
| Operating Temperature | -40°C to +60°C |
| Protections | Overcharge, Reverse Connection, Short Circuit, Over-temperature, etc. (9 types) |
| Dimensions (L x W x H) | 28 cm x 26 cm x 8 cm (Package) |
| Weight | 0.945 kg (Package) |
5. Setup and Initial Charge
Before using your FOXSUR FJS-800 for the first time, it is crucial to fully charge the device.
- Connect the provided multi-charging cable (or a compatible Type-C cable) to the 'INPUT' port on the jump starter.
- Connect the other end of the cable to a suitable USB power adapter (not included) or a powered USB port.
- The intelligent display will show the charging progress. Charge until the display indicates 100%.
- Once fully charged, disconnect the cable. The device is now ready for use.
Important: Always ensure the jump starter is fully charged before attempting to jump start a vehicle to ensure optimal performance and safety.
6. Operating Instructions
6.1. Jump Starting a Vehicle
Follow these steps carefully to jump start your vehicle:
- Ensure Safety: Park the vehicle in a safe location, engage the parking brake, and turn off all electrical loads (lights, radio, AC).
- Connect Clamps to Jump Starter: Insert the blue plug of the smart battery clamps firmly into the 12V 'JUMP START' port on the jump starter. Ensure a secure connection.
- Connect Clamps to Car Battery:
- Attach the RED (+) clamp to the positive (+) terminal of the car battery.
- Attach the BLACK (-) clamp to a clean, unpainted metal part of the car's engine block or chassis, away from the battery. Alternatively, connect to the negative (-) terminal if accessible and safe.
- Check Indicator: The smart clamp indicator light will show the connection status. A solid green light indicates a correct and safe connection. If it's red or flashing, check your connections.
- Start Vehicle: Once the indicator is green, start your vehicle's engine. If it doesn't start immediately, wait 30 seconds before trying again. Do not crank for more than 3 seconds per attempt.
- Remove Clamps: Once the engine starts, immediately remove the BLACK (-) clamp from the car, then the RED (+) clamp.
- Disconnect from Jump Starter: Disconnect the smart clamps from the jump starter unit.
Caution: Do not touch the red and black clamps together. Do not leave the jump starter connected to the car battery after the engine has started.
6.2. Charging Digital Devices (Power Bank Function)
The FJS-800 can charge your electronic devices:
- Connect your device's charging cable to one of the USB 'OUT' ports on the jump starter.
- The jump starter will automatically begin charging your device.
- Monitor your device's charging status.
6.3. Using the Emergency Light
The built-in LED flashlight has multiple modes:
- Press and hold the power button for 3 seconds to turn on the flashlight.
- Press the power button briefly to cycle through modes: Normal illumination > Strobe > SOS > Off.
- Press and hold the power button again to turn off the flashlight.
6.4. Wireless Charging
For devices that support wireless charging:
- Place your compatible device on the wireless charging pad located on the top surface of the jump starter.
- Ensure the device is centered on the pad for optimal charging.
- The jump starter will automatically begin wireless charging.
7. Maintenance and Storage
- Recharge Regularly: To prolong battery life, recharge the jump starter every 3-6 months, even if not used.
- Storage: Store the device in its protective carrying case in a cool, dry place, away from direct sunlight and extreme temperatures.
- Cleaning: Use a soft, dry cloth to clean the unit. Do not use harsh chemicals or abrasive materials.
- Battery Care: The lithium-polymer battery is designed for long life. Avoid fully discharging the unit frequently.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Vehicle does not start | Jump starter battery is low; clamps not connected properly; vehicle battery completely dead; engine too large for unit. | Ensure jump starter is fully charged. Check clamp connections (positive to positive, negative to chassis/engine block). Try again after 30 seconds. Ensure vehicle engine size is within specifications (Gasoline < 6.0L, Diesel < 4.0L). |
| Smart clamp indicator is red/flashing | Incorrect connection; reverse polarity; short circuit. | Disconnect clamps and re-connect carefully, ensuring correct polarity (+ to +, - to - or chassis). If problem persists, the vehicle battery may be severely damaged. |
| Jump starter not charging | Charging cable faulty; power adapter faulty; input port damaged. | Try a different charging cable and/or power adapter. Ensure the cable is fully inserted into the 'INPUT' port. |
| Digital devices not charging | Jump starter battery low; USB cable faulty; device not compatible. | Charge the jump starter. Try a different USB cable. Ensure your device is compatible with 5V/2.0A charging. |
| Wireless charging not working | Device not compatible; device not centered; foreign objects on pad. | Ensure your device supports Qi wireless charging. Reposition the device on the charging pad. Remove any metal objects or thick cases. |
9. User Tips
- Keep it Charged: For optimal readiness, always keep your FJS-800 charged, especially before long trips or during cold weather.
- Read the Manual: Familiarize yourself with the jump-starting procedure before an emergency arises.
- Cold Weather Performance: This unit is designed for extreme cold. For best results in very low temperatures, keep the jump starter in a warmer environment (e.g., inside the car cabin) until ready to use.
- Versatile Power: Remember to utilize its power bank and flashlight features for camping, emergencies, or daily charging needs.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your purchase receipt as proof of purchase.
