I don't think this is a black & white issue. While the spec tells you the operating range, I feel that is the extreme range and not something you want to do if you can help it. Some battery types will freeze before reaching the lowest published operating temperature of the scanner. Also, I do not feel it is good for the LCD display to be that cold. It would be one thing if you are using/holding the scanner; but no reason to "store" it at those temps.