I have four batteries for my P2, and there can be occasions when I won't use a battery for a week or so. I know that it's bad for the battery to store it either fully discharged, or fully discharged, so I've been charging my batteries to around the "2 solid and 1 flashing light" or "3 solid lights" level for storage, and then fully charging them a few hours before I go flying. Does this seem like a reasonable strategy?