If I were to leave my DSLR's Lithium battery unused for a long period (7mths - 1yr), what should I do to maintain the health of the battery?
According to the camera guide, it says "If the battery pack is not to be used for a long time, charge it and then fully use it up once a year on your camera before storing the battery pack in a dry, cool place to prolong the battery life."
Does this mean I should leave the battery with 0% charge (ie empty) and then store it? That said, I read from some sites that it might be advisable to keep the batteries charged at about 40-50%.
Using a Sony A55.
Any help is appreciated!