LOKITHOR JA400 Jump Starter with Air Compressor
Model Number: JA300
User Manual for LOKITHOR JA400 Jump Starter with Air
- Ensure your LOKITHOR JA400 Jump Starter is fully charged before
- Read all safety instructions and warnings provided in the
manual to avoid injury or damage to the device.
Jump Starting a Vehicle
- Make sure the jump starter battery level is above 50%.
- Turn off all electronics in the vehicle, and ensure the vehicle
is in park or neutral with the parking brake engaged.
- Connect the red clamp to the positive (+) battery terminal and
the black clamp to a grounded metal component on the vehicle's
- Power on the JA400 jump starter.
- Attempt to start the vehicle. If it doesn’t start immediately,
wait a few minutes and try again.
- Once the vehicle starts, carefully disconnect the black clamp
first, followed by the red clamp.
- Keep the engine running to recharge the vehicle's battery.
Using the Air Compressor
- Attach the appropriate nozzle adapter to the inflatable
- Connect the inflatable hose to the tire valve.
- Power on the JA400 and select the desired pressure unit
- Set the desired tire pressure using the '+' and '-'
- Press the start button to begin inflating. The compressor will
automatically stop once the preset pressure is reached.
- Disconnect the hose and store the unit appropriately.
Charging Electronic Devices
- Connect your device's USB cable to the appropriate USB-A or
USB-C output port on the JA400.
- Power on the jump starter to begin charging your device.
Using the LED Light
- Press the LED light button to toggle between Normal, Strobe,
and SOS modes.
- Press and hold the button to turn off the light.
- Jump Starter Won't Charge
- Ensure that the USB-C cable is properly connected and that the
power source is on. Try using a different cable or power
- Vehicle Won't Start
- Check that the clamps are securely connected, the battery level
is sufficient, and that you are following the jump-starting
- Air Compressor Not Working
- Ensure the hose is securely attached to both the jump starter
and the tire valve. Check for any obstructions or leaks in the
- LED Light Not Functioning
- Verify that the jump starter has enough battery power. If the
LED still does not work, the bulb may need replacement.
Frequently Asked Questions (FAQs)
How long does it take to fully charge the JA400 jump
The JA400 jump starter can be fully charged in approximately 40
minutes with a PD 60W USB-C power delivery input.
Can the JA400 jump starter start any vehicle?
The JA400 is capable of starting 12V vehicles up to 7.5-Liter
gasoline or 5.5-Liter diesel engines.
Is it safe to leave the JA400 plugged in all the time?
It is not recommended to leave the jump starter plugged in
constantly. Once fully charged, unplug the device to preserve the
longevity of the battery.
What safety features does the JA400 have?
The JA400 includes 10 safety protection technologies, such as
over-charge, over-current, and short-circuit protection, to ensure
How many times can I jump-start a vehicle on a single
The number of jump starts per charge can vary based on the
condition of the vehicle's battery and other factors, but typically
several jump starts are possible.
Can I use the JA400 to inflate bike tires?
Yes, the JA400 can inflate bike tires using the appropriate
nozzle adapter included with the product.
What should I do if my JA400 is not working properly?
Refer to the troubleshooting tips provided in this manual. If
the issue persists, contact LOKITHOR customer service for
How do I know when the air compressor has reached the preset
The JA400 air compressor will automatically stop inflating once
the preset pressure is reached, ensuring your tire is not
What is the weight and size of the JA400?
The JA400 weighs 1950 grams and has dimensions of 5.57"D x
9.99"W x 4.07"H, making it portable and easy to store.
How do I switch between different pressure units on the air
You can switch between pressure units (BAR/PSI) by pressing the
unit button on the digital display of the air compressor.
Can the JA400 charge laptops?
Yes, the JA400 can charge laptops that are compatible with USB-C
PD 60W charging.
What do I get in the box with the JA400?
The box includes the JA400 jump starter, jump starter clamps,
inflatable hose, nozzle adapters, USB-C cable, accessories storage
bag, and a user manual.
Q: What is the peak current of the LOKITHOR JA400 1750A Jump
A: The LOKITHOR JA400 Jump Starter is equipped with a peak current
of 1750A, allowing it to instantly start 12V vehicles with engines
up to 7.5 liters for gasoline and 5.5 liters for diesel.
Q: Does the JA400 Jump Starter come with a digital cordless air
A: Yes, the JA400 Jump Starter includes a digital cordless air
compressor that can provide a maximum pressure of 150 PSI and an
airflow of 35L/Min. It also supports tire-pressure detection,
preset values stopping, and unit switching (BAR/PSI).
Q: How long does it take to fully inflate a car tire using the
JA400 Tire Inflator?
A: The JA400 Tire Inflator can fully inflate a 195/65/R15 car tire
from 0 to 35 PSI in just 5 minutes.
Q: Can the JA400 battery pack be charged quickly?
A: Yes, the JA400 battery pack features PD 60W USB-C power delivery
input, allowing it to be fully charged in just 40 minutes.
Additionally, only 5 minutes of charging time are enough to start a
Q: Is the JA400 Jump Starter safe to use?
A: Yes, the JA400 Jump Starter is built with 10 safety protection
technologies, including over-charge, over-current, short-circuit,
reverse-polarity, low-temp, high-temp, over-voltage, over-load,
spark-proof, and reverse-charge protections. It also intelligently
identifies faults with its 21 error codes.
Q: Does the JA400 Jump Starter have a unique heat dissipation
A: Yes, the JA400 Jump Starter features a unique heat dissipation
design with three large heat dissipation air outlets (2 sides + 1
bottom). This design improves the heat dissipation performance by
75%, extending the continuous running time and service life of the
Q: Can the JA400 Jump Starter be used for more than just starting a
A: Yes, the JA400 Jump Starter has USB-A (QC3.0 18W) and Type-C (PD
100W) outputs, allowing it to charge smartphones, tablets, laptops,
wearables, and more. It also includes a lithium battery booster LED
light with three modes: Normal, Strobe, and SOS.
Q: What is included in the package of the JA400 Jump Starter?
A: The package includes the JA400 jump starter, jump starter clamps
x1, inflatable hose x1, nozzle adapters x4, USB-C cable x1,
accessories storage bag x1, and a manual.
Q: Is the JA400 Jump Starter a good gift option?
A: Yes, the JA400 Jump Starter can be a great gift for various
occasions such as birthdays, Valentine's Day, Father's Day,
Mother's Day, wedding anniversaries, Christmas, and New Year's.
Safety Information (PDF)
Specification Sheet (PDF)
Troubleshooting Guide (PDF)
User Manual (PDF)
|Automotive Parts & Accessories > Automotive > Tools & Equipment > Jump Starters, Battery Chargers & Portable Power > Jump Starters
|5.57"D x 9.99"W x 4.07"H
|Peak Output Current
|Country of Origin
|Item model number
|1 Lithium Polymer batteries required. (included)
|Manufacturer Part Number
|LED(Flashlight/Strobe Light/SOS Light)
|150 PSI Tire Inflator, Supports Tire Pressure Detection/Preset Charging and Stopping Values/Unit Switching, USB-C PD 60W Two-way Fast Charging, 400-lumen LED Flashlight, Constant Light, Flash and SOS, 1750A Portable Lithium Car Battery Jump Starter
|4.5 4.5 out of 5 stars 170 ratings 4.5 out of 5 stars
|Best Sellers Rank
|#42,724 in Automotive (See Top 100 in Automotive) #266 in Jump Starters
|Date First Available
|August 3, 2022
|5.57"D x 9.99"W x 4.07"H
|Peak Output Current
|5.57"D x 9.99"W x 4.07"H
|August 3, 2022
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