AUXITO J503 Portable 8000A Jump Starter 12V Battery Jump Box for Car & Truck

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AUXITO J503 Portable 8000A Jump Starter 12V Battery Jump Box for Car & Truck

$229.99
$159.99

⚡ 8000A Peak Current | 70+ Start Per Charge

🔋 20000mAh Power Bank | 60W Fast Charge + 160W DC Output

💡 620LM Super Bright Flashlight | 3 Lighting Modes

🛡️ 10 Advanced Protections | Force Boost Function

📦 Portable Design | All-in-One Tool

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  • Detail
  • SPEC
  • FAQ
  • Review

AUXITO A503 Portable 8000Amp Jump Starter Review From YouTube

@DaBadNewz
★★★★★

"This AUXITO Jump Starter Shocked me! (with how good it works)"

"This jump starter allows you to safely start a car with a dead battery. I found it really easy to use and super effective. It also has a light on the side that can be used for illumination, as a strobe, or also as a slow flash."
@MostlyUselessGarage
★★★★★

"The Auxito Jump Starter is a surprisingly capable and feature-packed emergency battery pack."

"With the AUXITO J503 jump starter, it's as easy as 1 2 3. Connect the jumper cable to the attractive and rugged jump start unit. Connect the clamps to the positive and negative battery terminals. After pressing the clearly labeled power then start buttons, the large bright screen displays the green ready indicator. Then simply start the car."
CAR BATTERY JUMP STARTER CAR BATTERY JUMP STARTER
Compact Jump Starter all Gas 10L diesel Compact Jump Starter all Gas 10L diesel

The J503 compact Jump Starter is a powerful lithium-ion car battery jump starter for 12-volt batteriesin vehicles with all gasoline engines and all diesel engines. With a 20,000 mAh battery pack and 8,000 amps peak current, this jump start battery pack can safely start a dead battery up to 60 times!

How to use Jump starter How to use Jump starter

Easily and safely connect to any 12V battery from jump start battery pack power to trucks using the AUXITO J503’s built-in smart clip, making it easier and faster to start your car.
Introducing the force starting function of the J503 battery jump box, pressing the "boost" button for 7 seconds offers more starting power to your vehicle and starts your vehicle immediately in any state!

Force start Boost Function Force start Boost Function
Jump Starter LCD screen indicator Jump Starter LCD screen indicator

The LCD screen indicator light makes your operation and usage status clear at a glance, and error operation prompts along with hot/cold LED indicators for battery operating temperature protect your battery and device.

Jump Starter 20000mAh fast Charge Jump Starter 20000mAh fast Charge

With USB-A, USB-C, and DC ports(160 W Max output), the J503 jump box for car also works as a 20,000mAh power bank ready to charge all your devices. 60W speed charging charges from 0% to 100% in less than 2 hours, while an information screen shows battery levels so you can easily monitor it.

Car power pack Car power pack
Jump starter with tactical flashlight Jump starter with tactical flashlight

The 620LM flashlight on the J503 compact jump pack for car is comparable to a tactical flashlight, with 3 light modes that allow you to adapt to any situation, including SOS and emergency Strobe. Use its powerful brightness to help you see the engine, change a tire at night, or even warn oncoming vehicles when you need roadside assistance.

Adaptable -4°F to 140°F Adaptable -4°F to 140°F

Equipped with the latest QDSP technology, the J503 battery jump starter significantly improves starting performance and can easily start a car in extreme environments (-4°F to 140°F), reducing the starting temperature by 50%. With 10 safety protections such as spark-proof technology and reverse polarity protection, this jump-start battery pack can be safely connected to any 12V battery.

10 safety protections 10 safety protections
Jump starter details Jump starter details
J503 battery jump box J503 battery jump box

Technical Specifications

What's In The Box
  • AUXITO J503 Jump Starter x1
  • Jumper Cable x1
  • Carry bagx 1
  • USB-A Cable x1
  • Type-C Cable x1
  • User Manual x 1
Starting Current
8,000 Amps (Peak)
Battery Types
Lithium-ion Battery
Battery Capacity
20,000mAh (74.0Wh)
Start Car Voltage
12V
Gas Engine Rating
All Liters
Diesel Engine Rating
All Liters
Type-C Input
5V/3A; 9V/3A; 12V/3A; 15V/3A; 20V/3A
Output USB-C
5V/3A; 9V/3A; 12V/3A; 15V/3A; 20V/3A
Output USB1
5V/3A; 9V/2A; 12V/1.5A
Output USB2
5V/2.4A
Output DC
12-16V/10A
Charging Time
About 2 hours
LED Flashlight
620 Lumens
Dimensions
8.94in*3.98in*2.32in (227*101*59 mm)
Storage Temperature
-4°F~140°F

Frequently Asked Questions

What scenarios can I use the AUXITO J503 Jump Starter in?

This unit is perfect to jump-start a dead car when the battery is undercharging or dead, the car stalls while driving, or in emergencies, for medical rescue, or on road trips.

Are portable jump starters worth it?

If you want to avoid waiting on a service truck, a portable power pack can be useful, but you have to make sure it's over 80% charged before using it. For the best jump starter, make sure you purchase one with the appropriate power output for your vehicle.

How often do you charge a jump starter?

It's recommended to charge a jump starter after every use and at least once every three months if not in use. This will ensure that the battery is always ready when you need it.

Does the J503 jump starter have a 12V DC output?

Yes. The AUXITO J503 jump starter has a 12V DC output port.
The 12V DC output port has a maximum of 160W (12-16V/10A) DC power supply. Designed specifically for 12V power appliances, these are perfect for daily use or other outdoor activities. For example, the following devices:
12V Televisions
12V Coolers / Refrigerators / Freezers
12V Fans / Heaters
12V Air Compressors
12V Rechargeable Vacuums
12V Coffee Makers

How long does a jump starter take to charge a car battery?

After the cable clip is correctly connected and ""Ready"" displays green, it only takes 3-5 seconds to complete startup.

How to choose a jump starter?

Here are some general things to consider when buying a battery jump starter:
Amperage: This is a measure of an instant burst of power. A higher number is generally better, which also means it is powerful and can help you start the vehicle no matter what weather it is.
Battery Capacity: This is how long the jump starter can provide power. You won't need a huge capacity for just jump-starting a car, but it can be handy if you also want to use it to power other devices.
Portability: Consider how easy it will be to carry and store the jump starter.
Safety Features: Look for a jump starter with built-in safety features, such as reverse polarity protection and spark protection.

Can you leave a jump starter plugged in all the time?

NO. We do not recommend leaving the jump starter connected after a successful start, and if you need to charge your vehicle's battery, you should use a professional battery charging device.

How do I know if the J503 jump starter is correctly connected to the vehicle?

The indicator on the jumper cable will show a steady green “READY” when the battery clamps are correctly connected to the vehicle battery.
If there are problems such as red and green lights flashing alternately, or steady red light coming on and the unit beeping, the device may be connected incorrectly, so please take care to adjust it according to the instructions.

What are the recommended operating and storage temperatures?

We recommend that the J503 jump starter be operated and stored at temperatures from -20°C to 60°C (-4°F to 140°F). Prolonged use or storage of the product in ambient temperatures above 140°F (60°C) is not recommended as this will damage the product's lithium-Ion battery, causing it to swell or fail.

How do you maintain a portable jump starter?

1. Always Keep Your Jump Starter Battery Charged(More than 80% charge).
2. Charge the J503 jump starter once every three months.
3. Store your jump starter at a moderate temperature. i.e., 20°C to 60°C.
4. Disconnect Your Jump Starter Once You Are Done.
5. Clean The Clamps Thoroughly.
6. Ensure that every use is done correctly and safe

What kind of jumpstart should I choose for my vehicle?

We recommend that you choose a jump starter based on the displacement of your vehicle.The bigger the engine, the higher the starting or cranking Amps number should be. For small to medium-sized vehicles with gasoline engines up to 7.0 liters, we recommend a compact emergency starter with a starting current of 1000A or more. For larger vehicles or heavy-duty vehicles we recommend the J503 jump starter, with a peak starting current of up to 6000A, jump start your vehicle instantly. In addition, the J503 jump starter unit has a boost function, which allows it to start your vehicle quickly even when the battery is nearly or completely dead. This is another reason why the J503 jump starter has an advantage over its competitors.

Can the J503 jump starter a 6V vehicle?

No. J503 jump starter is only designed for 12V vehicles. Jump-starting a 6V battery could become extremely dangerous.

How to connect jump starter to car battery?

1. Turn the car off and remove the keys from the ignition.
2. Connect the RED positive cable to the positive terminal on the battery.
3. Connect the BLACK negative cable to the engine block or a non-conductive piece of metal in your car.
NOTE: When the engine is not connected to the battery, the cable clip does not support the reverse connection protection. If you remove the power cord from the car battery, do not connect it in reverse when starting the car.

What do I need to be aware of when using the BOOST function?

The BOOST function is a forced start function, which is rarely used. When your vehicle does not start successfully after using the regular starting steps, then you can turn on the forced start function by pressing and holding the BOOST button for 7 seconds after connecting the vehicle battery.
*Please note that it is prohibited to reverse or short-circuit the clips during the use of the BOOST function. For your safety, do not touch the metal part of the clips while using this function and it is better to use it with gloves to avoid electric shock.

What battery does the AUXITO J503 Jump Starter use?

This unit uses a 74 Watt-Hour Lithium-Ion battery.

Does it have an auto-off feature in case it’s left on or accidentally turned on?

YES. The AUXITO J503 jump starter will automatically turn off in 1 minute if it doesn’t detect any use.
Note: J503 has timeout output protection. After connecting the car correctly, no start action has been performed, and the output is automatically disconnected after the clip conducts for about 45s, and the red light is always on.
However, we recommend that you disconnect from the vehicle's battery after using the starting co-energy to prolong the life of the battery.

Is the internal battery of the product replaceable?

The internal battery of the jump starter is NOT replaceable.

How long does it take to charge the jump starter with the PD60W charger?

60W Speed Charge delivers you 3x faster-charging experience. It takes about 2H to fill the charge for the J503 jump starter. However, the normal 18W charger will take 6~7 hours to fully charge the device.

How do jump starters work?

Portable jump starters come with their own internal battery. They’re designed to provide a high current for a short amount of time, just like your car’s starting battery.
But NOTE that they won’t charge your battery. They are designed only to provide the high current a car needs for starting.

What's the difference between a jump starter and a charger?

While both devices are designed to help when your vehicle is low on battery and won't start, their purposes and functions are different. The jump starter mainly provides the instant power needed to start the vehicle, but it cannot be connected to the vehicle battery for a long time. A battery charger, on the other hand, is used to charge the battery slowly over time.

AUXITO A503 Portable 6000Amp Jump Starter Review From YouTube

@DaBadNewz
★★★★★

"This AUXITO Jump Starter Shocked me! (with how good it works)"

"This jump starter allows you to safely start a car with a dead battery. I found it really easy to use and super effective. It also has a light on the side that can be used for illumination, as a strobe, or also as a slow flash."
@MostlyUselessGarage
★★★★★

"The Auxito Jump Starter is a surprisingly capable and feature-packed emergency battery pack."

"With the AUXITO J503 jump starter, it's as easy as 1 2 3. Connect the jumper cable to the attractive and rugged jump start unit. Connect the clamps to the positive and negative battery terminals. After pressing the clearly labeled power then start buttons, the large bright screen displays the green ready indicator. Then simply start the car."

Customer Reviews

Based on 24 reviews
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95.8
95.8
S
Steve Klebe (Dawsonville, US)
What is your vehicle's year, make and model : 2006 Dodge 2500 2023 4Runner
Saw item on YouTube

Thanks to Dixie Customs for doing the review and turning me onto this jump box

T
Trevor Otto (Tucson, US)
What is your vehicle's year, make and model : 1958 chevy truck
Great Jump Box!

Love this jump box!

Judge.me YouTube video placeholder
R
RICARDO MOLINA (New York, US)
What is your vehicle's year, make and model : 2008 Subaru Forester
Looks like an excellent product.

I received the lithium car jump starter. Substantial weight to it. Haven't used it yet but, if it's as good as all the LED bulbs I've bought from AUXITO before. I have no fear that the jump pack will work when needed.

H
Herb Banales (Portland, US)
What is your vehicle's year, make and model : 2003 Honda Element
Nothing but the best

Another thing I can gladly add to my collection of auditory thank you for making such good products

S
Shane Chavers (Lucedale, US)
What is your vehicle's year, make and model : 1994 Ford F250 2wd
Awesome Jump Starter!

This is a great device! I had to use it the other day on my F250 work truck. It jumped it off with ease, much better than breaking out jumper cables. Thanks AUXITO!

Shane Chavers review photo Shane Chavers review photo
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