Mostly, car batteries have different types of battery options with stamped date codes to show how old the battery is. These codes indicate the month and year of manufacture, allowing you to determine its shelf life., Decoding a battery date code is simple once you understand the common formats used by manufacturers. The date code, typically stamped on the battery’s casing, provides crucial information about the battery’s age, helping you determine its remaining life., READING BATTERY DATE CODES DID YOU KNOW: • All major battery manufacturers use a similar date code system. • Most automobile owners want to replace their battery when it is 3–5 years old. • Providing your customer the age of his or her battery is good customer service., Car battery date codes are alphanumeric sequences stamped or labeled on the battery that indicate its manufacturing date. Knowing these codes is crucial because they help you assess the battery’s age, which directly impacts its performance and reliability. An older battery may not hold a charge effectively, leading to potential starting issues., Date codes are found on all U.S. Battery products, indicating the month, year, and factory in which they were manufactured. For flooded lead acid batteries, the date code is stamped on the positive terminal using two letters and a number. The first letter refers to the month it was manufactured: A-L refers to January – December., .