The Linea Pro 4 allows customers to scan bar codes and capture magnetic strip information into the Apple iPod and Apple iPhone. Before using your Linea Pro 4 the battery should be properly charged. The following table will help to get your Linea Pro 4 ready for use. The Linea Pro 4 uses a Lithium Ion rechargeable battery. Before first use, the battery pack should be charged for at least (4) hours.