Introduction
The NEBO Assist 800 is a versatile 3-in-1 device designed for roadside emergencies. It functions as a jump starter for 12V vehicle batteries, a portable power bank for USB-powered devices, and a multi-mode floodlight for illumination.

Image: The NEBO Assist 800 connected to a car battery, highlighting its 3-in-1 capabilities: 800 Peak Amps for jump starting, 2700mAh power bank, and a 3-mode floodlight.
Important Safety Information
Read all safety warnings and instructions before using this product. Failure to follow these instructions may result in electric shock, fire, and/or serious injury.
- Do not jump start a frozen battery.
- Do not attempt to jump start vehicles with voltage systems other than 12V.
- Do not allow the red and black clamps to touch each other or other conductive materials.
- Do not expose the device to rain or wet conditions.
- Do not operate the device if it has received a sharp blow, been dropped, or otherwise damaged.
- Keep out of reach of children.
- Use in a well-ventilated area.
- Always wear eye protection when working with batteries.
Product Overview
The NEBO Assist 800 is a compact and robust device. It features an integrated jump starter, a power bank with USB-A outputs, and a powerful floodlight. The unit is designed for ease of use and portability.
Package Contents:
- NEBO Assist 800 Jump Starter Unit
- Jump Starter Cables with Clamps
- 12V Car Charger
- USB Charging Cable
- User Manual
Charging the NEBO Assist 800
Before first use, fully charge the NEBO Assist 800. It is recommended to recharge the unit after each use and every 3-6 months to maintain battery health.
Charging Procedure:
- Locate the USB input port on the NEBO Assist 800.
- Connect the provided USB charging cable to the unit and to a suitable USB power source (e.g., wall adapter, car charger).
- The battery indicator lights will illuminate to show charging progress. All lights will be solid when fully charged.
- For on-the-go charging, use the included 12V car charger by plugging it into your vehicle's accessory outlet.

Image: The NEBO Assist 800 connected to a 12V car charger, demonstrating its rechargeable capability while on the go.
Jump Starting a Vehicle
The NEBO Assist 800 is designed to jump start 12V car, truck, and marine batteries. Ensure the unit is fully charged before attempting a jump start.

Image: An illustration indicating the NEBO Assist 800 is compatible with 12V car, truck, and marine batteries, rated for gasoline engines up to 4 liters.
Step-by-Step Instructions:
- Prepare the Vehicle: Turn off the vehicle's ignition and all accessories (lights, radio, A/C). Place the vehicle in park (automatic) or neutral (manual) and engage the parking brake.
- Connect the Clamps:
- Connect the RED (+) clamp to the positive (+) terminal of the vehicle's battery.
- Connect the BLACK (-) clamp to a metal part of the vehicle's engine block or chassis, away from the battery and fuel lines. Do not connect to the negative (-) battery terminal directly unless specified by the vehicle manufacturer.
- Activate Jump Start: Ensure the clamps are securely connected. Press the jump start button on the NEBO Assist 800. The indicator light will confirm it is ready.
- Start the Vehicle: Attempt to start the vehicle. If it doesn't start immediately, wait 30 seconds before trying again. Do not crank for more than 5 seconds per attempt.
- Disconnect Clamps: Once the vehicle starts, disconnect the BLACK (-) clamp first, then the RED (+) clamp.
- Recharge: Recharge the NEBO Assist 800 as soon as possible after use.
Using as a Power Bank
The NEBO Assist 800 features a 2700mAh power bank with two USB-A outputs, allowing you to charge smartphones, tablets, and other USB-powered devices.

Image: The NEBO Assist 800 connected to a smartphone via a USB cable, illustrating its function as a 2-way power bank with 2x USB-A ports and 2700mAh capacity.
Instructions:
- Connect your device's USB charging cable to one of the USB-A output ports on the NEBO Assist 800.
- Connect the other end of the cable to your device.
- The NEBO Assist 800 will automatically begin charging your device. Monitor your device's screen for charging status.
Using the Floodlight
The integrated floodlight provides illumination with three modes: White, Red, and Red SOS, useful for roadside emergencies or general lighting needs.

Image: The NEBO Assist 800 with its floodlight active, emitting a red light, indicating its readiness to assist in roadside hazard situations with 3 light modes (White, Red, and Red SOS).
Operating the Floodlight:
- Press the dedicated floodlight button to cycle through the light modes.
- The modes typically include: White (for general illumination), Red (for preserving night vision or as a warning light), and Red SOS (a flashing red signal for emergencies).
- Press and hold the button to turn off the floodlight.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your NEBO Assist 800.
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: Recharge the unit every 3-6 months, even if not in use, to prevent deep discharge and extend battery life.
- Cable Inspection: Regularly inspect the jump starter cables and clamps for any signs of damage, wear, or corrosion. Replace if necessary.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Vehicle does not start after jump attempt. | Low charge on NEBO Assist 800; incorrect clamp connection; severely discharged vehicle battery; vehicle issue. | Ensure NEBO Assist 800 is fully charged. Check clamp connections for proper polarity and secure contact. Wait 30 seconds between attempts. If still no start, vehicle may require professional service. |
| NEBO Assist 800 not charging. | Faulty charging cable; power source issue; unit damage. | Try a different USB cable and power source. Ensure connections are secure. If problem persists, contact customer support. |
| USB devices not charging. | NEBO Assist 800 low on charge; faulty USB cable; device incompatibility. | Charge the NEBO Assist 800. Try a different USB cable. Ensure your device is compatible with standard USB charging. |
| Floodlight not working. | NEBO Assist 800 low on charge; internal fault. | Charge the NEBO Assist 800. If still not working, contact customer support. |
Specifications
- Model: NA800JS
- Brand: NEBO
- Peak Amps: 800A (for jump starting)
- Battery Capacity: 2700mAh
- Battery Cell Composition: Lithium Polymer
- Voltage: 11.1 Volts
- Compatible Devices: Smartphone (for power bank function)
- Special Features: Wireless Charging (Note: This feature is listed in product specifications but not detailed in product description, please refer to product packaging for confirmation), Integrated Floodlight
- Number of USB Ports: 4 (Note: Product description mentions 2x USB-A, please refer to product packaging for exact number)
- Power Source: Corded Electric
- Dimensions: 18.34 x 9.35 x 9.35 cm
- Weight: 453.59 g
- Automotive Service Type: Car, Truck, SUV
Warranty & Support
NEBO products are built with quality and reliability in mind. For warranty information, product registration, or technical support, please visit the official NEBO website or contact their customer service department. Keep your purchase receipt as proof of purchase.
Website: www.nebo.ac (Example link, please verify official NEBO support website)





