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UTRAI 2500A 24000mAh(8L Gas 7.5L Diesel Engine) 12V Battery Jump Pack Power Bank with Flashlight, USB QC3.0 (Model BJ-4-OR)



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1.Powerful Performer: Car battery jump starter with 24000mah(88.8wh) capacity high rate polymer battery can jump start 12v battery car. And the peak current up to 2500A, suitable for SUV, tracks, snowmobiles, vans or motorcycles, etc
2.10W Wireless Charger & Type-C Output: Flat designed car jumpstart can achieve efficient 10W wireless charger function, also has USB QC 3.0 and Type-C fast charging port, almost meet the charging needs of all devices.
3.2 Smart Digital LCD Display: One lcd display showing the car battery charger’s power, and another lcd screen is built-in the smart jumper cables, which can exactly display the working status of the battery booster.
4.Multi-Function Emergency Flashilight: 4 types of LED modes: lighting, strobe1(white ), strobe2(blue & red), SOS under different circumstances. Built-in compass and safety hammer, which are great emergency tool when get lost in the wild.
5.Advanced Safety Technology: The portable car starter's built-in protection circuit works with intelligent clamps to provide more than 8 advanced safety protections, including reverse polarity protection, overcurrent protection, overload protection, overvoltage protection, etc.


The Rated power of the Jstar4 is 15W, it can be 5V 3A, the largest voltage is 5V, so no matter how large the charger you used to charge the device, it can only accept 5V. We suggest to charge it with your phone or other wall outlet not less than 2A. Less than 2A might take little long time to charge. And too high power like 40W or 65W might have compatibility issues.
The USB output can be 18W, at 5V/3A, 9V/2A, 12V/1.5A.
Safety and faster jump start your flat battery in 1- 3 seconds.
With a peak current of 2500A, the UTRAI Jstar 4 Power Pack can start up to 8.0L gas and 7.5L diesel engines in seconds. On a single full charge works up to 25 times to jump start cars, motorcycles, trucks, boats and more. (Fully charges in 5-6 hours)
QDSP Technology, Special clamps with screen provide 10 kinds of screen display status analysis, understand your car battery in seconds.
Safety hammer, LED light, compass, power bank makes it a great handy emergency tool.


Battery Capacity: 24000mAh
Peak/ Start Current: 2500A/ 1250A
Battery Cycle Life: ≥300 times
USB Output: 5V/3A, 9V/2A, 12V/1.5A
Type C Input/Output: 5V/3A
Gas / Diesel Engine Rating: Up to 8.0L /7.5L


Additional information

Dimensions 4.13 × 5.51 × 9.65 cm


1) What is the status of my order?

You’ll receive a confirmation email after you place your order which should include information about the expected ship date(s) for your items. You’ll receive another email when your order ships. Delivery can typically be expected within 3-5 business days.

2) What if I want to cancel my order?

Please send us an email to [email protected] requesting to cancel. If your order has not shipped from our distribution partners, we can request a cancellation, however, it is not guaranteed. If your order has already been shipped, it cannot be canceled. Once you receive your item, you can take advantage of our easy returns/ exchange process. Please note that not all items are eligible to be returned, you can learn more by visiting our return policy on our website at:https://appravo.com/shipping-and-returns/

3) What payment methods are accepted?

We accept US issued MasterCard, American Express, VISA credit cards, and Paypal, as methods of payment.

4) Do you ship internationally?

We currently ship to Continental US addresses only. Please note that special shipment rates may apply in cases where delivery destinations are in remote areas. As always, the cost of shipping will be calculated during the checkout process and will highlight the shipment cost that is applicable.

5) What delivery provider do you use?

Our standard delivery service for the U.S. is FedEx, UPS, USPS.

6) How soon will I receive my order?

-Continental US addresses: 3-5 business days from the date of shipment. -Alaska and Hawaii addresses: 7-10 business days from the date of shipment.


At Appravo, we make it simple. We offer a single rate shipping starting at $7.99 across United States for orders under $99.99. Spending $100 or more? Then shipping is $4.99, and if you’re spending $150 or more, then shipping is on us!*

We use standard ground courier delivery services to deliver your purchases, typically within 3-5 working days. *Exclusions apply: Some products may not be eligible for shipping rates provided due to weight restrictions. We take pride in our services and will never overcharge you for shipping and make you pay more than you need to.

*Learn more about our Shipping Policy here: View our Shipping Policy


We want our customers to feel great about shopping at Appravo. With our 14-day return policy, you’llhave the time to make sure that your purchase was right for you. Returns in new factory sealed condition with original packaging and accessories are eligible to receive a refund. All other returns are to be examined and may be charged a restocking fee. In most cases, return shipping costs are the priority of the customer. If desired, we will send you a shipping label and take the charge from existing payment where possible.

*Learn more about our Shipping Policy here: View our Shipping Policy

Speedy Shipping
3-5 Days US-Wide Shipping
100% Money-Back Guarantee
Buy With Confidence And Zero-Risk
Our Gear Is Tested and Stamped.

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