NO, it CAN NOT. HULKMAN Alpha jump starter is a jump starter, NOT a battery charger. Also, you don't have to connect to a running vehicle for a jump-start.
Differentiate jump starter from battery charger:
Jumper starter delivers an instant cranking power which is supposed to kick-start a dead battery in a short time.
Battery charger is a device that requires time to recharge your car battery and delivers a steady flow of current. It usually take several hours to two days to fully charge a car battery.
If you're looking for a device to get your car battery fully recharged, opt for a battery charger. However, if you want to prevent in the event of a roadside breakdown, HULKMAN Alpha jump starter might be a better choice, especially Alpha 85S upgraded with Pre-Heat Tech. It saves you money and inconvenience down the road. Always hold your back on the road.
Learn more about Jump start your vehicle with the Alpha jump starter.
Please don't leave the jump starter cables kept connecting to the car battery, since this may lead to a short circuit and discharge of battery or a fire.
Please remove the cables from the car battery once the process is completed, wind it and store it at a room temperature for future use.