ET03 Car Jump Starter 4000A Jump Starter Battery Pack for Up to 8.0L Gas and 7.0L Diesel Engines, 74Wh Portable 12V Jump Box with USB Ports, LCD Display, Storage Case, and LED Light

STARTS 0V DEAD BATTERIES EASILY: This car battery jump starter has integrated the force start function in the jumper clamps, which delivers powerful performance to bring your vehicle back to life even if the vehicle has a completely dead battery at 0V. Please make sure this battery jump starter is fully recharged or above 14V if you want to use this jump starter on a car with a dead battery.

BACKUP PORTABLE POWER BANK: This jump starter battery pack can also work as a 74Wh large battery capacity portable power bank to charge your smartphones, tablets, or other USB electric devices. Two 5V/2A USB output ports are packed on this jump starter that can be applied at the same time for charging, 50% faster than a standard charger.

PACKED WITH LED EMERGENCY LIGHT AND BONUS FEATURES : the ET03 car jump starter is packed with a 00-lumens LED flashlight to provide help in darkness or for emergency situations that support three variable light modes (stable, strobe, and SOS).

There are more features included such as an LCD screen to check the battery status, a wide working temperature from -4℉ to 140℉, and 24 months long standby time. 10 INTELLIGENT SAFTY PROTECTIONS: This jump starter battery pack is super safe to use with 10 intelligent safety protections against overcharge, short circuits, reverse polarity, power surging and sparking, and so forth.

You can detect the errors by simply checking the lights and the beep sound from the smart jumper clamps.