I use this particular brand of battery cases for all my batteries. I am a full-time commercial photographer and always use AA and AAA batteries in my gear. Although there are waterproof options, I have never been in a situation where the batteries were damaged due to the lack of waterproofing: the cases or bags they were in protected them and in the end all the advantages of this article disappear. Given (convenience, excellent build, secure mount balanced with operational capability) I would rather take this item and put it in a zipped bag rather than the waterproof option. when working with rechargeable batteries: one color has charged batteries, the other dry ones) and I'm sure I'll be buying many more over time.
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