How can we help?



What battery does the Yesper Jump Starters use?

They use a lightweight lithium polymer battery.

Does the Yesper Jump Starter only start vehicles?

Yesper Jump Starter comes with a flashlight function and is not only a device that can start your car but also a portable charger that can quickly charge your mobile devices and laptops on the road.

Why are the green and red light on the jumper cable blinking?

The jumper cable features a smart Over-Start Protection function. If you start the vehicle more than 4 times in 2 minutes, the jumper cable will turn on Over-Start Protection: The green and red light will start to blink and the battery clamps will have no output. When you disconnect the jumper cable plug from the jumper starter, the smart Over-Start Protection will reset.

Can this unit charge other devices while it is being charged?


Shipping, Returns & Exchanges

Orders placed on are all free shipping. Meanwhile, you will enjoy 30-day return warranty and 2-year quality warranty.

What is the shipping policy?

Once your order is placed, you will receive a confirmation email letting you know that our fulfillment team has received your order. Once your order is fulfilled, you will receive an email notification with your tracking information.

Delivered but not received, where can I find my stuff?

1. If the tracking details show your package was delivered and you can't locate it, please wait two full days (excluding Sundays and holidays) for the package to arrive. We recommend checking around your home and asking your neighbors if they may have received it for you.

2. If after that time you still haven't received it, reach out to us via and we'll be happy to help.

How do I process a return and refund?

Please feel free to contact us via We will provide the after-sale service for you within 24 hours.

Where could I get the return labels if I want to return the units?

If you want to return the units, please email us via

And please make sure that the kit and product are fine, so we can process a refund request as soon as possible.

Get in touch

Have questions about your order, or a general enquiry?