What's a PP9 battery?

[Roger Hamlett]

"Lizard Blizzard" <NOSPAM@rsccd.org> wrote in message
news:bim4dp$3tcie$1@hades.csu.net...

Mark Zenier wrote:

[snip]

An AA is already the same length as a C, so all you need is something
to bulk up the diameter. Perhaps a section of plastic pipe with a piece
of foam pipe insulation inside it?

According to the data sheets at http://data.energizer.com/ the AA is 5.5
mm shorter than a C cell. Click on data sheets and consumer.
Er. Make that 0.5mm

If you go and take apart one of the old cheap rechargeable 'C' cells that RS
used to sell, you will find that it contains an AA battery inside it, and no
extra 'spacers' are used to change the length...
Most battery couldn't care about 0.5mm difference, but 5.5mm would matter.
A spacer to increase the diameter is all that is normally needed.

Best Wishes

 

[Watson A.Name - 'Watt Sun]

In article <rlF3b.100$6Z1.115692@newsfep2-gui.server.ntli.net>,
rogerspamignored@ttelmah.demon.co.uk mentioned...

"Lizard Blizzard" <NOSPAM@rsccd.org> wrote in message
news:bim4dp$3tcie$1@hades.csu.net...
Mark Zenier wrote:

[snip]

An AA is already the same length as a C, so all you need is something
to bulk up the diameter. Perhaps a section of plastic pipe with a piece
of foam pipe insulation inside it?

According to the data sheets at http://data.energizer.com/ the AA is 5.5
mm shorter than a C cell. Click on data sheets and consumer.
Er. Make that 0.5mm
If you go and take apart one of the old cheap rechargeable 'C' cells that RS
used to sell, you will find that it contains an AA battery inside it, and no
extra 'spacers' are used to change the length...
Most battery couldn't care about 0.5mm difference, but 5.5mm would matter.
A spacer to increase the diameter is all that is normally needed.

Yeah, shame, ain't it? I went over to Fry's and checked out all the
rechargables, and I couldn't find a single C or D cell that was more
than a couple thou mAh. Every one was a lot lighter than a real
alkaline C or D cell, meaning that much of it was hollow. I can go
to the battery websites and order a true rechargable C or D with close
to 10 or 20 thou mAh, 5 or 10 times the cheap ones at Fry's.

I run a flasher for a month off four 2000 mAh Ni-MH AA rechargables,
and I would think that it would run off four D cells for the better
part of a year. Well, there would be some percentage leakage loss
just from sitting there for that time, but still the thing should run
a lot longer than AA cells. Not a Forever Flasher, but getting closer
to it!

Best Wishes

--
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