The battery has a 1-year limited warranty against manufacture defects for both parts and labor. Limited Warranty Coverage (For USA and Puerto Rico Only) – If your product does not work properly because of a defect in materials or workmanship, Panasonic Corporation of North America (referred to as "the warrantor") will, for the length of the period indicated, which starts with the date of original purchase ("warranty period"), at its option either (a) repair your product with new or refurbished parts, (b) replace it with new or refurbished equivalent value product, or (c) refund your purchase price. The decision to repair, replace or refund will be made by Panasonic.