Can this unit be used for inflation and deflation?

Yes, it supports both. You can use it to quickly inflate tires and inflatables, as well as deflate items like air mattresses to a ultra-compact size for easy storage and travel.

What should I do if the device won't charge or isn't charging other electronics?

Use Original Cable: Third-party chargers may not be compatible.

Check the Port: Clear any dust, debris, or damage.

Wait 15 Mins: Deeply drained cells need time to light up indicators.

Still not working? Contact our support for a hassle-free solution.

What should I do if the jump starter fails to start minivan?

Please check the smart clamp indicator light:

Flashing Red/Green: Ready. If ignition fails, hold back "BOOST" button on the back of the clamp for 3s until solid green, then start.

Solid Red/Beep: Battery too low. Fully charge before next use.

Can this compact device deliver its rated peak current? How does the cable handle it?

Yes. Cars need high current for only ~2 seconds. A standard battery is 60A–70A. The instant peak current can exceed 1000A, but lasts just 0.1 seconds—our 60A pure copper cables handle it safely.

Why does the battery drain fast or struggle in cold weather?

Freezing temps reduce efficiency. To improve performance: crank immediately after clamping to avoid static drain. The 4-LED “full” indicator may show 80–100%—not true full. For a deeply depleted battery, charge to 100% before use.

Product description

JS-40 Jump Starter with Air Pump

About

, an independent brand born in 2014 and has been focusing on the auto parts industry for many years. We have designed a large number of auto products and sold them all over the world, and are committed to providing the best solution to any auto problem on the road.

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