5S 5-cell 15A lithium-ion battery 18650 lithium battery charger charging protection board 18.5V 21V battery

Jump leads are an invaluable piece of kit in the event of a flat car battery. Select them according to your engine type, the quality of their clips, the amperage of your battery and the length of the cables. You will also have to choose a cable cross section; the most common options are 25 mm², 35 mm² or 50 mm².