If you have ever left your radio or car lights on while shopping or at work, you will know the frustration of a dead car battery. A car jumper starter is a convenient tool that you can keep in the boot of your car to jump-start your vehicle anywhere. With the ability to start a 12V battery in mere seconds, the TOPDON car jumper starter is perfect for home or auto repair shop use. You can expect 25 jump starts from just one full charge of the unit. With a 3-in-1 function, you can jump-start your car, charge your battery wirelessly, and use the LED light as an SOS or regular flashlight in emergency situations. The unit has passed all necessary safety testing and meets all regulations. This unit can safely charge your car battery, truck battery, motorcycle, boat, lawnmower, etc. The TOPDON 16 000 mAh is a lifesaver for dead batteries.