It depends on how long the 'length of time' is. If it is only a month or two, it would be fine, however, after being made, a manufacturer has no idea how long it will be before the LiPO is first used - it could be a couple of years before it is even sold to the end customer. At this kind of time period, then it will of course make a difference, but this isn't the length of time most people are talking about, it is usually only around a month or so.
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