I have been using rechargeable batteries for 20+ years. We are finally to a point that AA and AAA have enough voltage, capacity and shelf life to use them as replacements for alkaline batteries. It use to be that with rechargeables you would have to recharge them before every use. Oh the wall clock is dead go plug a battery in the charger for a few hours. Now with Sanyo eneloop AA and AAA you can charge a battery and it will hold a charge for up to a year. One thing that has always bothered me is where do I store all these small batteries. So I purchased some small 8 cell and 4 cell holders. They were nice but I ended up with a ton of these small holders. What I needed was battery box designed to hold AA and AAA cells. I searched Amazon and Google but never really came up with a battery box that was reasonably priced and would hold enough cells. That was until I found a blog with flashlight geeks talking about storing all their batteries in ammo cases. Even when I found this blog there was more research as they did not list the model numbers. They just were referencing long ammo case for AA and short ammo case for AAA. So I hit Amazon looking for ammo cases. I turns out there must be a million types of ammo and just as many cases and none of them say the word battery. But it turns out some reviewers were posting about certain ammo cases working great for AA and AAA batteries.
For AA batteries I purchased the MTM 50 Round Flip-Top Rifle Ammo Box WSSM, 500 S&W (Clear Blue)
and for AAA batteries I purchased the MTM 41/44 Cal 50 Round Flip-Top Ammo Box