A booster circuit is needed to change 5V to 12V, and a large capacitor is also needed, because the current is very large when the car starts, and this current is not directly provided by the charging bank, only a capacitor can be provided.
On the right side of the starting power supply is designed a special 12V car start port, which is protected by the rubber cover when not in use. When needed, the rubber protective cover can be opened to expose the copper interface, and the intelligent module of the battery clip can be directly connected to carry out the next operation. To remind you, the interface is designed with an irregular elliptical structure, and you do not have to worry about inserting the wrong one, because the wrong one cannot be inserted at all.