Torn between posting here or in preparedness but it’s related to light batteries. I’m looking for a storage case for 18650 batteries. I’d prefer it hold 4. I’m thinking the small translucent style? I’ve tried Amazon and the set I got is for 18650’s but doesn’t fit mine. There seems to be several classes of the battery. Protected and non protected as well as flat topped and I guess the kind I have with the nipple on the positive end. Anyone have success with a specific model? It’s tough to tell from all the Amazon reviews what style are in the pictures supplied. I’d like to do it right once.