Yesper Speed 4120 is the most powerful car jump starter
No tricks,only facts, and figures here.featuring at 4120 A peak current, 24000 mAh (88.8 Wh).
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.
Large Battery Capacity Long Standby Time
Equipped with 24000 mAh battery and low self-discharge (≤120 uA), one full charge can use up to 60 times. It can last 6-12 months after being fully charged. However, recharging it every 3 months is recommended.
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.
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.
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.
Port Features
Specification Dashboard
