Mike,
I wholeheartedly agree with your position on batteries, here is a copy of a post I made on another forum I moderate on the subject of commanlity or diversity of supplies.
It has long been a popular idea that it is better to consoldate certain things into a common item, caliber, battery type etc. I was always of the same mindset in many way, but as of late I have been reconsidering this stand.
Hearing things out of Katrina and other emergency situations has made me ponder this and I have started to come to the conclusion that in certain areas, it not only makes sense to diversify, but it builds in a natural safety factor. People found that certain items, or sizes went faster than others, D batteries and AA batteries for example, went before AAA, C, and CR123s.
In the case of an emergency, where resupply is not likely , certain popular items will go faster than others. If you limit yourself to one specific caliber or battery, then you severly limit your possiblity of finding that item should you need to.
Yes, I hear you now, but I will have enough to last me for the next millenium because I only have to stock up one, well, **IT happens, and supplies get lost, destroyed, stolen, confiscated, etc. And saying it wont or cant happen to me, does not stop it.
Yes, I do agree that buying readily available popular items makes it more likely you will find them, however, adding somethig a bit less popular is not a bad idea and increases your chance of finding that resupply due to lack of popularity.
Ok, here is an example of what I am saying:
Man X has Rifle caliber .223, Pistol 9MM, Shotgun 12 guage, has several of each for himself and each member of his family, plus a supply of ammunition. Natural disaster hits suddenly, he is unable to move stores out of danger, and they get wiped out in a flood or other catastrophe. He goes to store to find more, he has 3 possible calibers/guages to find ammunition.
Man Y has Rifle calibers .223 .35 Remington .22 LR, Pistol 9MM, 9MM Makarov, .380 ACP, .357 magnum, Shotgun 12, 16 guages, has several of several different and some single models for himself and member of his family, plus a supply of ammunition. Natural disaster hits suddenly, he is unable to move stores out of danger, and they get wiped out. He goes to store to find more, he has 9 calibers/guages to find ammunition.
Man Y has more chance at finding some ammunition for at least one of his calibers. Something like the 9MM Makarov would be even more likely to find than other more well known calibers, giving a slight hedge. In part this is because while it is semi-exotic, it is also popular enough as to be fairly common in many sporting goods supplies.
Same can hold true with batteries. I have started carrying in my stores, AAA, AA, CR123, C, D lights, and batteries for each. The CR123s would last longest on shelves because they are not as well known to the general flashlight public as the others. Just like calibers I find different ones better for different tasks, but, anything is better than nothing which you might end up with if you limit yourself too much.
What are your thoughts?