Introduction
Thank you for choosing the FNNEMGE Car Jump Starter. This powerful and versatile device is designed to jump start your vehicle, charge your electronic devices, and provide emergency lighting. With a peak current of 4000A and a 21800mAh battery capacity, it can start 12V vehicles (up to 8.0L gasoline or 6.5L diesel engines) up to 30 times on a single charge. Its ultra-safe design incorporates 10 advanced protections to ensure safe and reliable operation. Please read this manual thoroughly before use to ensure proper handling and maximize the product's lifespan.

FNNEMGE Car Jump Starter with smart clamps and charging cables.
Package Contents
Please check the package for the following items:
- FNNEMGE Car Jump Starter Unit
- Smart Jumper Cables with Clamps (Red for positive, Black for negative)
- USB Charging Cable (Type-C input)
- User Manual
- Storage Case
Product demonstration video showing the jump starter's features and accessories.
Specifications
| Feature | Specification |
|---|---|
| Brand Name | FNNEMGE (FEIKFEIZ) |
| Peak Current | 4000A (Rated >1200 A) |
| Battery Capacity | 21800mAh (20000-30000 range) |
| Start Voltage | 12V |
| Engine Compatibility | Up to 8.0L Gas or 6.5L Diesel |
| Fast Charge | One Way Fast Charge |
| Special Features | USB, Lighting, Warning Light, SOS Lighting |
| Item Weight | 765g |
| Number Of Built-in Batteries | 4 |
| Conversion Rate | >90% |
| External Testing Certification | ROHS, FCC, CE |
| High-concerned chemical | None |

Key specifications of the FNNEMGE Car Jump Starter.
Safety Information
Your safety is our priority. The FNNEMGE Car Jump Starter is equipped with 10 ultra-safe advanced protections. Always follow these safety guidelines:
- Spark-Proof Protection: Prevents sparks during connection.
- Zero Damage Protection: Designed to prevent damage to the vehicle's electronics.
- Low Voltage Protection: Automatically shuts off if voltage is too low.
- High Temperature Protection: Prevents overheating.
- Short Circuit Protection: Protects against short circuits.
- Reverse Polarity Protection: Alerts if clamps are connected incorrectly.
- Over Voltage Protection: Safeguards against excessive voltage.
- Over Charge Protection: Prevents battery overcharging.
- Over Discharge Protection: Protects against excessive battery discharge.
- Reverse Charge Protection: Prevents current flow back to the jump starter from the vehicle battery.
General Safety Precautions:
- Do not allow the red and black clamps to touch each other.
- Do not jump start a frozen battery.
- Do not use the jump starter if the battery is visibly damaged or leaking.
- Keep out of reach of children.
- Store in a cool, dry place away from direct sunlight and heat.
- Do not disassemble the unit.

The 10 ultra-safe advanced protections integrated into the jump starter.
Setup
Before first use, fully charge the jump starter. The 2.6" intelligent LCD display will show the battery level, operational status, and charging indicators.
- Charging the Jump Starter: Connect the provided USB charging cable to the Type-C input port on the jump starter and a suitable USB power adapter (not included). The LCD will indicate charging status.
- Checking Battery Level: Press the power button once to check the current battery level on the LCD display. Ensure it is sufficiently charged before attempting to jump start a vehicle.

The 2.6" Intelligent LCD Display provides comprehensive data on battery level and operational status.
Operating Instructions
1. Jump Starting Your Vehicle
Follow these steps to safely jump start your car:
- Step 1: Insert the jump cable into the jump starter. Ensure the smart jumper cable is securely plugged into the 12V output port on the jump starter.
- Step 2: Connect the clamps to your car battery. Attach the red (positive) clamp to the positive (+) terminal of your car battery and the black (negative) clamp to the negative (-) terminal. The smart cable will indicate a safe connection.
- Step 3: Start your car engine. Once the clamps are correctly connected and the smart cable indicates readiness, start your vehicle's engine.
- Step 4: Remove the clamps to complete the jump start. After the engine starts, immediately remove the clamps from the car battery, then disconnect the smart cable from the jump starter.

Visual guide for quickly jump starting your car.
2. Using as a Power Bank
The FNNEMGE Car Jump Starter doubles as a 21800mAh power bank to charge your electronic devices.
- Connect your device's USB charging cable to the USB output port (USB1 Out or USB2 Out) on the jump starter.
- The jump starter can charge phones, iPads, game consoles, drones, earphones, smartwatches, cameras, and other digital devices.

The 21800mAh power bank feature allows charging of various electronic devices.
3. Using the LED Lamp
The built-in LED lamp offers three modes for various situations:
- Flashlight Mode: Press the power button once to turn on the steady flashlight.
- SOS Mode: Press the power button twice quickly to activate the SOS signal.
- Strobe Mode: Press the power button three times quickly to activate the strobe light.

The LED lamp features SOS, flashlight, and strobe modes for emergency and utility use.
Maintenance
- Cleaning: Wipe the unit with a dry, soft cloth. Do not use harsh chemicals or abrasive materials.
- Storage: Store the jump starter in its protective case in a cool, dry place when not in use. Avoid extreme temperatures.
- Charging: For optimal battery life, recharge the unit every 3-6 months, even if not used, to maintain battery health.
- Cable Care: Inspect jumper cables and clamps for any damage before each use. Replace if necessary.
Troubleshooting
- Car won't start:
- Ensure the jump starter is fully charged.
- Check that the smart jumper cables are securely connected to both the jump starter and the car battery terminals.
- Verify that the clamps are connected to the correct polarity (red to positive, black to negative). The smart cable should indicate a safe connection.
- If the car still doesn't start after a few attempts, there might be a larger issue with the vehicle's battery or starter system.
- Jump starter not charging:
- Ensure the USB charging cable is properly connected to both the jump starter and the power source.
- Try a different USB power adapter or cable.
- Check if the charging port on the jump starter is clean and free of debris.
- LED light not working:
- Ensure the jump starter has sufficient battery charge.
- Press the power button multiple times to cycle through the light modes.
User Tips
- Always keep your jump starter charged, especially before long trips or during cold weather, as battery performance can be affected by temperature.
- Familiarize yourself with the connection process before an emergency arises. Practice connecting the clamps to your battery (without starting the car) to build confidence.
- The DC output can be very useful for powering 12-volt car accessories like portable air compressors or car vacuum cleaners, making it a versatile tool beyond just jump starting.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official FNNEMGE website. Keep your proof of purchase for any warranty claims.




