I ran out of AAAA batteries but then I bought more AAAA batteries. Now I have extras

This doesn't help you in any way but it's good for me

@mcc AAAAAAAAAAA

@mcc more A is always better

@mcc for me personally given my recent replies on the subject, it just makes me happy to see more people taking ipv6 readiness seriously

@mcc what... do you even need AAAA batteries for

that's too many As, no device that requries them could possibly not be cursed

@demize Android tablet pen

@demize It's thin

@mcc Every time I need a postage stamp, I buy a new pack of 20 because I can’t find any of the other packs of 20 I’ve purchased throughout my life.

@mcc it does seem like a good use for that many As

@oldmankris Someday future generations will open the one drawer in your house you forgot to check in and find 304 stamps, in 16 separate booklets each with one stamp used

@mcc All my old checkbooks are probably in that same drawer

@mcc In case you didn’t know, most alkaline 9v batteries are six AAAA batteries connected in series internally. They’re annoying to cut apart, but a lot more common than AAAA at retail.

@bob_zim I've heard this but I don't understand why they'd do this when the market for AAAAs is so much smaller than the market for 9Vs

@mcc @bob_zim What device do you have that takes AAAA batteries? I didn't even know that was a size that they came in.

Most of my remote controls take AAA batteries and I buy those in cases of 48 at a time.

@steve @bob_zim Tablet pen

@bob_zim @mcc I've pulled apart one major brand that does that. Most 9v batteries are more like a stack of little plastic trays or nippless legos.

@mcc There isn’t a convenient chemistry which develops 9v directly, so to provide that voltage, the battery must have multiple cells. The process to make a AAAA cell is basically the same as the process to make any of the other more common cylindrical cell sizes, so the market is mostly the construction of 9v batteries plus selling a few loose cells for tablet pens and such.

Outside LiPo cells, prismatic batteries have basically always been a group of a bunch of cylindrical cells in somewhat uncommon sizes. For example, those 6v lantern batteries with the spring contacts (MN908, PJ996, and several other designations) were usually four F cells (recent ones are often four D cells or eight C cells).

@bob_zim Thank you for explaining!

@mcc I think I've never seen AAAA batteries. A lot of AA, some AAA but not smaller

@mcc @bob_zim Also, 9Vs used to be a stack of six flat square cells, but probably someone figured they could make a tiny bit more money by combining two product lines.

@rotopenguin @mcc While I’ve never personally encountered that style, I have heard of it. The lower terminal surface area would limit the potential discharge rate, but most 9v applications don’t need to support high discharge. Maybe cheaper batteries marketed for smoke alarms specifically?

I know Duracell Ultra 9v batteries are six AAAA cells. All the Energizer 9v batteries I’ve disassembled have been, too.