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Message: <blockquote data-quote="Al Downie" data-source="post: 3304850" data-attributes="member: 4042">Beg to differ! Batteries are a potential source of acid leaking into your binoculars; batteries are attached to electronics and moving parts that add significant bulk and weight, and which frequently fail; batteries go flat; batteries will probably shorten the life of your binoculars, and reduce their resale or inheritance value.I love my consumer electronics, and have image-stabilised photographic lenses, but the thing that blows me away about really good binoculars is that they can provide a WOW without batteries at all. If I look after them well, they'll continue to do that for the rest of my life, without ever needing batteries...</blockquote>