Battery Alert Panasonic OXYRIDE AA's

Hi all

Just tried a new (well it is in NZ ) cell technology called Oxyride from Panasonic. They are touted as a cell for digi cams. They are nominally 1.5V, BUT they start life off at 1.7V!!! The DS does not like this what so ever. Sits there and flashes the empty cell symbol.

Not sure of their chemical makeup, but they got some guts! A touch too much for the DS it would appear. Anyone else experienced this?

Did a quick Forum search and didn't notice any other mention, so appologies if its already old news in the rest of the world.
--
Gazza
http://www.pbase.com/gvrb



Smokey: October 1984 - 15 February 2005
'You only stop learning when you stop breathing'

Not about these but there have been several discussions about rechargeble CR-V3 that also give up a too high voltage, but as far as I can remember no damage done nor problems like yours.

janneman02 said:

Not about these but there have been several discussions about
rechargeble CR-V3 that also give up a too high voltage, but as far
as I can remember no damage done nor problems like yours.

Click to expand...

Forgot to mention, these are disposable cells not rechargables.

No damage. DS turned on after I pu the Nihms back in
--
Gazza
http://www.pbase.com/gvrb



Smokey: October 1984 - 15 February 2005
'You only stop learning when you stop breathing'

I doubt it's the voltage that causes the problem you have, the lithium AAs I routinely use are about 1.8V when new and are recommended by Pentax.

--
John Bean

PAW 2005 Week 18:



See: http://waterfoot.smugmug.com/paw

Me too. It's not the start/rest voltage.

Rick

Maybe they read 1.8V at rest, but what about when the camera powers up? It could still be that the Panasonics are higher.

Lithiums have a very low internal resistance, they don't sag under modest loads like alkalines do. I can't measure them in the camera but under controlled conditions you need a lot of load - much more than the camera provides - to make a new lithium AA drop much below 1.7V

--
John Bean

PAW 2005 Week 18:



See: http://waterfoot.smugmug.com/paw

Hi,

be careful!!!

Maximum voltage for istD/S is 6,5 volts

Higher voltages may damage the cam (informations from pentax-service germany)

GVRB said:

Hi all

Just tried a new (well it is in NZ ) cell technology called
Oxyride from Panasonic. They are touted as a cell for digi cams.
They are nominally 1.5V, BUT they start life off at 1.7V!!! The DS
does not like this what so ever. Sits there and flashes the empty
cell symbol.
--
Gazza
http://www.pbase.com/gvrb



Smokey: October 1984 - 15 February 2005
'You only stop learning when you stop breathing'

Click to expand...

We do not know if these new batteries are lithium or not. They may have low current and not work in the DS.

Yes, I know that

The original poster was assuming that they didn't work because of high voltage (1.7V) and I was pointing out that the recommened lithium AAs are even higher voltage (1.8V) and work fine so this isn't the problem.

--
John Bean

PAW 2005 Week 18:



See: http://waterfoot.smugmug.com/paw

John Bean (UK) said:

Yes, I know that

The original poster was assuming that they didn't work because of
high voltage (1.7V) and I was pointing out that the recommened
lithium AAs are even higher voltage (1.8V) and work fine so this
isn't the problem.

Click to expand...

I'm aware of battery charactoristics and the way they behave under load. Come accross this all the time with my work. I'm a watch maker. Admitadly I'm dealingin milli or micro amps

Batteries state on them that they are initially 1.7V. Nothing that I've measured (because my multimeter battery is flat, doh!). Here's a link to the Panasonic page regarding them.

http://www.panasonic.com/consumer_electronics/batteries/oxyride.asp

--
Gazza
http://www.pbase.com/gvrb



Smokey: October 1984 - 15 February 2005
'You only stop learning when you stop breathing'

This "new" battery technology is apparently intended to compete with alkaline and puts no pressure on lithium. Panasonic markets them as having twice the life of alkaline but several tests have not supported that claim. They also state them to be less expensive than alkaline.

Also, just because one battery has a greater overall capacity than another, doesn't necessarilly mean it can handle a deep current surge as well as the lesser capacity one. This is determined by chemistry and internal resistance.

Do the google search and read lots of stuff. One example:
http://www.geek.com/news/geeknews/2005Mar/gee20050408029920.htm

As for the 6.5v maximum rating of the istD and DS cameras. If the overhead capability is no better than that, we should all turn them back in. As John says, new AA lithiums, a battery recommended by Pentax, are close to 1.8v at rest. This results in a total voltage for four new batteries of 7.2v.

You guys (and gals) worry too much. Just use common sense.

Rick

Hi Rick

Had a quick read. Thanks for the link. Golf course is calling (Saturday morning here). Will read properly when I get home.

Life's so good in NZ, all I have to worry about is batteries ;-)

--
Gazza
http://www.pbase.com/gvrb



Smokey: October 1984 - 15 February 2005
'You only stop learning when you stop breathing'

I have also tried Oxyride batteries and my *istDS does not work with these batteries.

Stig Vidar Hovland

Thankgoodness I was not the only one They look like they should be great from the specs, but they don't work.
--
Gazza
http://www.pbase.com/gvrb



Smokey: October 1984 - 15 February 2005
'You only stop learning when you stop breathing'