Just upgraded to the Mavic 2 Pro from cutting my teeth on the Air over the summer. My Fly More kit arrived this morning and I got to thinking, 2 batteries will see me over the winter months that are now kicking in so I was going to leave one of them in hibernation for the brighter days to kick back in. could this cause a problem with the battery and will it harm them over time? or can it be kept in this state indefinitely?