@larryg18 fun fact: some 9V batteries are just 6 AAAA batteries wired in series, crammed in to a metal case. If you know which ones are made that way,it can be cheaper to dismantle a 9V than it is to buy the individual AAAA cells.
@whogots in every one I’ve dismantled, they’re just a regular AAAA with the nib on one end and flat surface on the other. Usually they are held in series with flat steel strips that are spot welded on to the ends, but a small pair of pliers or wire cutters is sufficient to remove them without damage
@larryg18 I once had a voice recorder that was powered by three AAAAs. First time I needed replacements, I was SOL - nobody carried them, nobody could order them, and I couldn’t even find them on that new-fangled internet thingy. I finally came across a reference to them being inside 9v batteries, and I bought them “by the six-pack” after that.
[AAAAs returned to the shelves about a year later. I never did find out what caused the shortage.]
Just to chime in, the cells found in the 9v isn’t exactly AAAA, though they can be used in place of them.
“Some models of alkaline nine-volt battery contain six LR61 cells connected by welded tabs. These cells are similar to AAAA cells and can be used in their place in some devices, even though they are 3.5 millimetres (0.14 in) shorter.”
@larryg18@msayler@RedOak The inner seal is not as strong as a regular standalone cell. I accidentally let an almost AAAA short out, and it went pop. The insides flew away and landed on the floor a few feet away from the counter with the remainder of the battery on it (plus the thing it was connected to). I have never had a standard alkaline battery cell blow itself apart.
If the inner seal leaks, the goo has plenty of space to between the individual cells, so it doesn’t usually build up enough pressure to go through that outer seal.
I make glass beads. The process leaves some crud in the centers, which you clean out with a reamer. The default method is mounting a thin pointy diamond bit on a wooden handle and moving it in, um, an innuendo-wise direction.
I quickly got tired of perforating my thumbs and moved the bit to my Dremel, which accomplishes the cleanup rotararily. I haven’t hurt myself since.