On Tue, 25 Jan 2011 19:49:53 +0000 (UTC), Meat Plow
wrote:

On Tue, 25 Jan 2011 09:29:21 -0800, Jeff Liebermann wrote:

On Tue, 25 Jan 2011 06:33:14 -0600, Jeffrey Angus
wrote:

On 1/25/2011 1:47 AM, Jeff Liebermann wrote:
Compliments of friend, we mow have a good example of what happens when
one shorts the terminals of a 9V Duracell ProCell alkaline battery.

That's interesting, they make 9 volts with 6 cylindrical cells. I
remember taking 9V batteries apart in the '60s and they were a flat
stack of rectangular cells

Those were carbon-zinc batteries.

I have a red laser pointer that uses overpriced AAAA batteries. Tearing
apart a 9V alkaline battery provides me with a cheap supply.
http://www.rfcafe.com/references/ele...nside-a-9volt-
battery.htm

1. Was this done on purpose?

No. My friend lives in a small apartment and does everything on his
desk. It's a huge mess, full of tools, parts, junk, and debris. He
doesn't know exactly what shorted the terminals, because the battery
bounced around the desk.

2. Do all 9v have AAAA inside?

I don't know. I know that the cheap carbon-zinc 9V batteries do not
have cells, but I suspect that the others qualify. I've torn apart a
few others and found AAAA cells. There are many web pages and You
Tube videos that show what's inside.

Mo
http://blog.xkcd.com/2007/08/20/testing-the-9v-battery-hack-or-assault-on-battery/

Actually, they're not quite AAAA cells but are about 1mm shorter. I
had to put a blob of solder on the + terminal to make up the missing
length.

Someone posted a video claiming that you could get 32 AA cells from a
lantern battery:
http://www.snopes.com/photos/humor/batteryhack.asp

My green laser pointer uses AAAA.

I'm borrowing a green laser that uses two AA batteries. Much cheaper
to operate and lasts much longer. We were comparing green lasers (for
dish antenna alignment) at the last radio club meeting. All present
were allegedly 5mw green lasers, but there was a HUGE difference in
brightness when pointed at the wall. The one I'm borrowing was the
brightest. Everyone complained that they killed batteries quite
rapidly. One of them would drastically reduce brightness after about
10 seconds. All of them got hot.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558