All of our Panasonic rechargeable batteries are fully charged at our factories before shipment. However, during shipment, batteries may naturally discharge due to the change in environment or temperature. It is recommended to charge a rechargeable battery before use if the situation allows for it in order to reduce damage to the battery.
However, if you have no choice but to buy and immediately use the batteries, feel free to do so. The optimal capacity of the battery will be reached approximately after two charge and discharge cycles.