The battery box for 4 batteries / accumulators type AA or 5 batteries / accumulators AAA provides a clear storage. However, the cap jumps to very easily, so dder content can fall out. I would have also a marker for loaded / empty as desired, such as a clean-fitting lid. However, this is not to get in the price range. The two stars, I give it that the box just so that does what it should, namely to keep, but also no more. Who needs a stable and secure closure boxes and possibly a moisture protection, should rather resort to another product!