What are the recommended M-Series LiPo battery storage voltages?

If a Freefly M-Series LiPo battery (4S) will not be used for more than one week, it is recommended that the battery is stored with a voltage of approximately 3.8V per cell. Do not store the battery fully charged. Store the battery at room temperature in a cool or shaded area (ideally between 50º-80ºF/10º-26ºC).