Introduction
The LOKITHOR JP400 is a compact, multi-functional device designed for automotive emergencies. It integrates a powerful jump starter, a smart air compressor, a portable power bank, and an LED flashlight into a single unit. This manual provides essential information for safe and effective use of your JP400.
What's in the Box
Upon unboxing your LOKITHOR JP400, please ensure all the following items are present:
- JP400 Car Jump Starter with Air Compressor x1
- Jumper Cables x1
- Inflatable Hose x1
- USB Cable x1
- Nozzle Adapters x3
- Storage Bag x1
- User Manual x1

Video: An unboxing demonstration of the LOKITHOR JP400 Jump Starter with Air Compressor, showing all included accessories and the main unit.
Key Features
- Extreme Compactness: Smallest multi-function unit with 2500A peak power for 12V vehicles (up to 8.5L Gas/6.5L Diesel engines).
- Cordless Smart Emergency Air Compressor: 150 PSI airflow, quickly inflates tires with preset & auto-off shut-off.
- Innovative CONNECTMAX Technology: Automatically detects impedance for enhanced starting performance and reliable connections.
- Born for Safety: Integrated battery management system and smart self-identifying clip with 10 protection types.
- Emergency Light & Power Supply: Dual USB ports for charging devices and a 300 lumen LED light with 3 modes (flashlight, strobe, SOS).
- Smart Digital LED Display: 4.15-inch screen for real-time voltage, inflation type, and tire pressure monitoring.
- Upgraded Thermal Design: High-density materials, double balance beam for noise reduction, and ventilation windows for improved heat dissipation.
Setup
Before first use, fully charge the LOKITHOR JP400 using the provided USB-C cable and a compatible wall charger (not included). The smart LED display will indicate charging status.
Operating Instructions
Jump Starting Your Vehicle
- Attach Clamps: Connect the red positive (+) clamp to the positive terminal of the car battery. Connect the black negative (-) clamp to the negative terminal of the car battery.
- Power On: Turn on the LOKITHOR JP400. The ConnectMax indicator will light up, confirming a good connection. If the lights are yellow and blinking, adjust the clamps within 10 seconds for optimal connection.
- Start Vehicle: Once the ConnectMax indicator shows a solid green light, start your vehicle's engine.
- Power Off & Detach: After the vehicle starts, power off the JP400. Detach the clamps from the car battery, starting with the negative clamp first, then the positive.

Video: A demonstration of how to properly connect the LOKITHOR JP400 to a car battery and initiate a jump start, highlighting the ConnectMax technology.
Tire Inflation
- Attach Air Hose: Screw the inflatable hose onto the JP400's air outlet.
- Connect to Tire: Attach the other end of the hose to the tire valve.
- Power On: Turn on the LOKITHOR JP400. The display will show the current tire pressure.
- Select Pressure Unit & Mode: Use the 'MODE' button to select between BAR/PSI and choose the appropriate inflation mode (car, motorcycle, bicycle, ball).
- Adjust Pressure: Use the '+' and '-' buttons to set the desired target pressure.
- Start Inflation: Long press the 'PUMP' button to begin inflation. The compressor will automatically stop when the preset value is reached.
- Remove Air Hose: Detach the hose from the tire valve and the JP400.

Video: A demonstration of how to use the LOKITHOR JP400 to inflate a tire, showing the connection of the hose and setting the pressure.
Safety Features
The LOKITHOR JP400 is designed with an integrated battery management system and smart self-identifying clip, offering 10 types of protection:
- Spark-Proof Protection
- Reverse-Charge Protection
- Over-Charge Protection
- Over-Current Protection
- Short-Circuit Protection
- Reverse-Polarity Protection
- Low-Temp Protection
- High-Temp Protection
- Over-Voltage Protection
- Over-Load Protection

Power Bank & Lighting
Portable Power Bank
The JP400 features dual USB ports (USB-A 5V/3A output, USB-C 5V/3A input/output) to charge your phone, laptop, camera, watch, and other mobile devices.

LED Flashlight
A 300 lumen LED light provides three lighting modes: flashlight, strobe, and SOS. This is ideal for night road emergencies or outdoor adventures, with a light time lasting up to 12 hours.

Maintenance
To ensure optimal performance and longevity of your LOKITHOR JP400, follow these maintenance guidelines:
- Charging: Keep the unit charged. It has a standby time of up to 36 months (1080 days) with a self-power consumption of only 0.35mAh.
- Storage: Store the device in a cool, dry place. The upgraded thermal design with ventilation windows improves heat dissipation by 50% and increases service life by 25%.
- Temperature: The unit is designed to operate in extreme temperatures (-4°F to 140°F) and has low-temp and high-temp protection.
- Cleaning: Keep battery terminals and clamps clean to ensure good connection.

Troubleshooting
| Error LED & Code | Explanation | Reason/Solution |
|---|---|---|
| Red (Temperature Icon) | Over Heating Protection | Wait for the device to cool down. |
| Blue (Snowflake Icon) | Low Temperature Protection | Keep the device at the appropriate temperature. |
| Red (Exclamation Mark) | Abnormal Status | Restart the product/contact after sales. |
| Yellow (Reverse Polarity Icon) | Reverse Connection Protection | Correctly connect the car battery. |
| Yellow (Battery Icon) | Charge Reminder | The current startup capacity is insufficient, please charge and try again. |
| 430 | External Battery Voltage is Greater than Device Voltage | Try again after charging or check if the 24V battery is connected incorrectly. |
| 450 | Startup Failed | After confirming the correct connection, please refer to the manual to use boost start mode. |
Specifications
- Model: JP400
- Battery Nominal Voltage: 4S*3.7V=14.8V
- Battery Capacity: 29.6Wh/8000mAh at 3.7V
- Input: USB-C 5V-3A
- Output: USB-C 5V-3A, USB-A 5V-3A
- Starting Current: 1500 Amp
- Peak Current: 2500 Amp
- Inflation Pressure Range: 8-150 PSI
- Air Flow: 22 L/MIN
- Sensor Precision: ±1PSI
- LED Light: 300 LUMEN
- Charging Temperature: 0°C to 45°C (32°F to 113°F)
- Storage Temperature: -20°C to 50°C (-4°F to 122°F)
- Operating Temperature: -20°C to 60°C (-4°F to 140°F)
- Product Dimensions: 7.18"D x 2.07"W x 3.74"H
- Item Weight: 1.65 Pounds
- Vehicle Service Type: Passenger Car
Warranty & Support
The LOKITHOR JP400 comes with a 1-year manufacturer warranty. For any questions, technical support, or warranty claims, please refer to the contact information provided in your user manual or visit the official LOKITHOR website.
Additionally, the product has a 30-day refund/replacement return policy through the retailer.





