We have come along in many milestones since the advent of Lithium Ion Batteries! Batteries used to be expensive, but now they are super expensive! but well worth the price! The STANDARD PERFORMANCE WARRANTY from Freedom Won guarantees that the Freedom Won LiTE battery will achieve at least a 10-year service life or deliver an equivalent in kWh of at least 6 000 charge-discharge cycles, whichever event should first occur.