Born To Jump Start

Help you out of the following dilemmas quickly and easily. Forget to turn off the light all night, encounter the extreme weather, or need a jump, Yesper jump starters help you out of desperate and get fast on the road.


Start Your Car Fast

Recommended to jump start 12 V vehicles up to all gas and 10.0 L diesel engine, like cars, boats, lawnmowers, and more.Yesper Speed 4120 will be your best road partner to jump-start your vehicle in seconds.


24000mAh Power Bank

With its multi-functional design, it's ready to charge all your devices by 3 outlets. 24000 mAh power bank to keep your devices run on a long trip.


Ok To Charge Your Car Equipment

Power up your 12-16.8 V DC car equipment on the go, ensuring your joyful driving experience. It can deliver up to 150W.


Safety First

8 Safety protection, including spark-proof protection, over-current protection, over-voltage protection, and overcharge protection, etc, ensure you and your car's security.


Low Self-Discharge,Battery Ready for 24 Months

With a super low self-discharge design,YJS40 holds a charge for up to 24 months.


Work In Extreme Weather

Yesper jump starter can work at high temperature up to 131°F and cold up to -4°F. Built-in over-temperature protection allows the unit to turn off the output actively when the battery is at high temperature.


The Material Uses ABS V0 Military Grade Fireproof Material

Truly achieve 0 sparks,100% safety


3 Modes LED Light To Brighten Your Night

Ideal for an adventurous night. A super-bright 1 W LED flashlight with 3 light modes including SOS and emergency strobe.


Easy To Jump Start

You can jump start your car totally by yourself without assistance in 4 steps.