On 30/01/2011 20:22, Mark Zenier wrote:
In ,
Jeff wrote:
On Tue, 25 Jan 2011 19:49:53 +0000 (UTC), Meat Plow
wrote:

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.

A week or two ago, I ended up with several dead 9V alkalines and decided
to scrap off the end piece with the connectors.

Both Duracell and Energizer have cylindrical cells inside. Duracell
spotwelds them together with metal strap. Energizer just has a metal
contact pattern with jumpers on a spacer and uses the metal outer case
crimp to put pressure onto the cell contacts. My guess is that a 9V
Energizer would be more likely to go bad if dropped too hard, but it's
easier to get individual cells out of it.

Mark Zenier
Googleproofaddress(account:mzenier provider:eskimo domain:com)


Which is exactly the reason we don't use Energisers in radio microphones!

Ron (UK)