A storage battery comprises a data storage device that allows for storing and retrieving data that may be useful during the life of the battery. The device may include a radiofrequency tag applied to the surface of the battery. Data stored in the device may be accessed by various devices, such as battery analyzers that perform remaining life other analyses. Some or all of the data may be encrypted to require that approved or licensed devices only access and use the data. Some data may be encrypted in one manner, requiring a first key, and other data in a different manner, requiring a different key. The different data sets may have different purposes, such as for battery analysis (using no encryption or requiring the first key), and for warranty, manufacturing, retail tracking and other purposes (using the second key).