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We offer worldwide shipping services to almost every destination. Please note that some items may have shipping restrictions, and certain products cannot be delivered to international locations. At checkout, the system will estimate your shipping and delivery dates based on item availability and your chosen shipping method. Delivery time estimates may appear on the shipping quote page, depending on the carrier you select. Additionally, shipping fees for many of our products are weight-based. The weight of any such item can be found on its detailed product page. To reflect the policies of our shipping carriers, all weights will be rounded up to the next whole pound. We provide a 30-day free return policy. If the return is due to our responsibility (such as product quality issues or incorrect shipments), shipping costs will be covered by 40buy.com. For returns, please contact our customer service team via the WhatsApp icon in the lower right corner of our website. All products purchased from 40buy.com come with a quality guarantee – shop with complete confidence.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
All-in-One Emergency Solution
Professional Inflation Performance
Safety & Portability
Multi-Scenario Use
Q: How long does the battery last? What devices can it charge?
A: The 10000mAh battery inflates 3-4 car tires per charge or charges phones 5-8 times (USB-A/C output).
Q: Can it handle extreme temperatures?
A: Operates in -4°F~140°F (-20°C~60°C) with over-heat protection, ideal for U.S. climates.
Q: Is it compatible with all vehicles?
A: Works on 12V cars, SUVs, trucks. Not for EVs (e.g., Tesla) or 24V heavy-duty vehicles.
Q: Is the air pump noisy?
A: Noise level ≤75dB, quieter than most competitors.
Q: How do I request a 30-day return? Is return shipping free?
A: Free returns within 30 days! Contact us for a prepaid label. Product must be undamaged with all accessories.
Q: What’s the international shipping time and cost?
A: Free global shipping! Orders ship in 1-3 days, delivery within 7-15 business days. Track your package in real-time.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
I got this "Portable Car Jump Starter with Air Compressor" to try. I have verified the air pump that works well and works as expected. The whole product is quite compact and can be easily stored in the truck. I love that it comes with multiple functionality, including both jump starter and air compressor. The price is very competitive, considering the extra functionality it comes. My air compressor is already more expensive than this product.This product is a great value and I would highly recommend it.
This little box does some work.So far I've used it to air up bicycle tires, I've used the solid and flashing lights, and the blower feature. It's easy to operate. Turn on the power button and select the function you need by clicking the 2 arrows at the bottom. The light function has a solid white light and flashing red and blue. The blower function is cool since it inflates and deflates. I haven't used the power bank and jump functions but I will say that the jumper cables are extremely short.
This combo product comes with a nice semi soft carrying case which is very handy for storing in your car. For its price point it comes with upgraded features like automatic shut off when the compressor meets the pre-set pressure you set. It also comes with accessories for inflating balls, air mattresses, etc. There even is a built in flashlight that is pretty bright.The jump starter portion is rated for full size trucks. It is easy to operate and takes just a second to set up. I even got to test it on our 5.3L Tahoe when we accidentally left the tailgate open all night. The car went from just the key clicking to roaring power beautifully.I recommend this combo jumpstarter/compressor...Especially with that extra 25% off coupon.
This is always good to have one of these on hand. Its especially good for airing up tires in a pinch. I'm not sure how long it will hold its charge; but, will charge off of a ciggarette lighter (or USB) as needed.I haven't had to try jumping a battery with it; but, my son and I are going to look at a Jeep in the next few days and I'll bring it along in case we do need to jumpstart it.
I have several other brands of these jump start / air compressor combo devices and this one is equally compared to most, better than some of them. I tested the compressor on my wife's SUV and it got them from 28 to 36 PSI in right around a minute per tire and still had over 90% battery remaining after doing all four tires. To validate that the pressure was correct I checked all four tires and they were all within 1/2 PSI of 36. I tested the jump start capability on my Mercedes CLK-500 V-8 project car that has a weak battery. Connected it to the jump points on the car and it cranked right up like it had a full battery in it and only used about 5% of the charge. I tested it on an F-150 and a Honda Odyssey at the grocery store and it had no problem starting both with no signs of struggle and only used 15% charge for both while still on the initial charge. I camped out by the air pumps at one of my local gas stations and used it to air up tires for eight vehicles to run the battery down to the last bar on meter. Recharged using a 15 Amp charger and it took a little over an hour to reach full charge which is decent compared to my other jump start / compressor units. The controls are easy to use and the display is easy to read even on a bright day. The carrying case is very helpful in keeping everything nicely together. For performance, speed of charge, ease of use, and having an included storage case I would easily say this is a quality jump start / compressor combo unit at a fair price.
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