The LithiumHub Emergency Start Lithium Jump Starter is designed to be permanently mounted on the top or side of a vehicle-starting battery or other location, and is intended to remain in place for emergency use. When a jump start is required, use the app on a smartphone to turn on the unit or long-press the function button on the unit. The smartphone technology allows the Emergency Start to be accessed from the safety of being inside the vehicle. The Emergency Start is capable of jump-starting cars, trucks, SUVs, boats, and UTV with engine sizes up to 7.2L (gas) and 4.0L (diesel); as well as 4-cylinders, V6, V8, and V10 engines.