Vtoman V4000 is a portable and powerful lithium jump starter that can boast 4000A peak current and 800 cranking current to jump start 12V car battery up to 10.0 L gas/ 10.0 L diesel engines instantly. Featured in USB port means it can be served as power bank for smartphone, tablets and cameras, etc. You can also use its 3 modes of 400 lumen emergency light to examine your car engine, delivery SOS signal at night, or illuminate a dim garage or campsite. Intelligent and integrated jumper clamps in the host avoid missing and make it easy to store. Always happy, efficient on the go.Advanced and Powerful V4000 Jump Starter99.2Wh high capacity allows you to jump start up to 70 times. And it can be served as helpful power bank and emergency flashlight.Powerful Start-Up PerformanceThis jump starter power bank is capable of delivering up to 4000 A when jumping 12 V cars up to 10.0 L gas and 10.0 L diesel engine quickly and efficiently.Integrated Jumper CablesThe jump pack has integrated jumper leads, greatly enhancing the starting performance by 80% and promoting the rate of successful start-up by 50%.USB Charging AvailableThrough the USB port, you can charge your USB devices, such as the iPhone, tablets, or iPad.400 Lumen Emergency LightFlashlight, SOS and strobe modes to meet your various needs, like checking your engine at dark, delivering emergency signals, brightening dark corner,etc.Upgraded Ergonomic DesignThe special grip design helps you to carry the host firmly and securely. And with the integrated jumper clamps, you could never worry about missing them at all.Work In Extreme WeatherThe incomparable material and design of the V4000 car battery booster make itself capable of starting 12 V vehicles quickly in extreme environment at -4°F to 140°F.Smart Safety Protection10 Smart built-in safety protections ensure the product’s and your safety through the Vtoman’s unique chip technology.(over-charge, over-current, short-circuit, reverse-polarity, low-temp, high-temp, over-voltage, over-load, spark-proof, reverse-charge).What In The BoxV4000 jump starter with battery clamps X1USB-A to USB-C cable X15V/2A wall charger X1User manual X1Carrying bag X1