These are covers that I designed to be used with the Universal Stackable Crates https://www.printables.com/model/786277-universal-stackable-crates-with-signs-and-optional

I love those crates for storing my rechargeable batteries but wanted a more secure lid. I raised the inside of the new covers 2mm to allow the H1.5 crates to fit AA batteries and the H2.0 crates to fit 18650 batteries.

These should be printed in a flexible material. I used Bambu TPU-HF with support enabled on print bed only.