9.6V NiMH PP3 batts - available here?

[eug k]

hi,

Does anyone know if there are any australian sources for
9.6V PP3s? i.e. the usual rectangular 9V batts. The
usual rechargable "9V" batts are 7.2-8.4V, too low for
radio mics and heaps of other stuff.

thanks!


--

 

[Phil Allison]

"eug k" <wired_au@change-this-to-ho.tmail.com>

Does anyone know if there are any australian sources for
9.6V PP3s? i.e. the usual rectangular 9V batts.

The usual rechargable "9V" batts are 7.2-8.4V, too low for
radio mics and heaps of other stuff.

** Bullshit - the 8.4 volt NiMH ones work just fine in radio mics.

Do you think a 9 volt alkaline stays at that voltage while it is being
discharged ????




.............. Phil

 

[Merlin Zener]

On Mon, 12 Apr 2004 12:45:22 +1000, Phil Allison wrote:

"eug k" <wired_au@change-this-to-ho.tmail.com

Does anyone know if there are any australian sources for 9.6V PP3s? i.e.
the usual rectangular 9V batts.

The usual rechargable "9V" batts are 7.2-8.4V, too low for
radio mics and heaps of other stuff.



** Bullshit - the 8.4 volt NiMH ones work just fine in radio mics.

Do you think a 9 volt alkaline stays at that voltage while it is
being
discharged ????

On a somewhat related note:
how could I make a tester for NiMH batteries? I want to be able to know if
there's an hour worth of charge left in the battery before putting it in
the radio mic.

Is it just a simple O/C voltage test? Or something like "X volts at Y
milliamps drawn"?

If a battery has, say, 180mAH when full, how would I find out if it still
has, say, 18mAH left [assuming a simple case of a device that draws 18mA,
so it would still operate for an hour before total discharge]


TIA for any help/advice/clarifications...

 

[Phil Allison]

"Merlin Zener" <

On a somewhat related note:
how could I make a tester for NiMH batteries? I want to be able to know if
there's an hour worth of charge left in the battery before putting it in
the radio mic.

* Forget it, there is no easy way to make such a device.

Just make sure the battery has been charged before each use - there is
no need to fully discharge it each time .




............. Phil

 

[Paul Monk]

Why worry with NiMH just charge it. NiMH has no memory issues and can be
charged as often as you like. Discharging NiMH batteries below 60% is more
detrimental to longevity than charging at say 20% discharge. The Everyready
NiMH made in Japan presently are the ones to beat. AA 2100mAh presently on
special at Myers for $9.95 pair.

--


"Merlin Zener" <merlin@localhost.localdomain> wrote in message

On a somewhat related note:
how could I make a tester for NiMH batteries? I want to be able to know if
there's an hour worth of charge left in the battery before putting it in
the radio mic.

Is it just a simple O/C voltage test? Or something like "X volts at Y
milliamps drawn"?

If a battery has, say, 180mAH when full, how would I find out if it still
has, say, 18mAH left [assuming a simple case of a device that draws 18mA,
so it would still operate for an hour before total discharge]


TIA for any help/advice/clarifications...

 

[Desmond Wong]

Jaycar have the true 9V Lexcel batteries, I have one here. I have used this
in the past instead of the standard 7.2V PP3 batteries as I required 27V to
drive a certain device.

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:c5csso$9al$1@bunyip.cc.uq.edu.au...

hi,

Does anyone know if there are any australian sources for
9.6V PP3s? i.e. the usual rectangular 9V batts. The
usual rechargable "9V" batts are 7.2-8.4V, too low for
radio mics and heaps of other stuff.

thanks!


--

 

[Phil Allison]

"Desmond Wong" <des_nospam@ihug.com.au>

Jaycar have the true 9V Lexcel batteries, I have one here.

** Catalogue number please ????




............. Phil

 

[Bob Urz]

Paul Monk wrote:

Why worry with NiMH just charge it. NiMH has no memory issues and can be
charged as often as you like.
Not entirely true about charge as often as you like. Most cells have a

rated number of charge discharge cycles before the batteries degrade.
Most cells are anywhere from 200 to 1000 cycles. Its hard to tell how
accurate these figures are. Its important to use a smart charger to
get the most out of NiMH cells. The 9.6 volt cells are available on the
web if you search. Note they require a special smart charger if you find
them.


Some wireless mikes will mute if the battery voltage gets too low.
While a 8.4 volt NiMH cell may work in many applications, others
it might cut off sooner than you think with some life still in the
cell. Your mileage may vary.

Bob


Discharging NiMH batteries below 60% is more

detrimental to longevity than charging at say 20% discharge. The Everyready
NiMH made in Japan presently are the ones to beat. AA 2100mAh presently on
special at Myers for $9.95 pair.

-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----

 

[eug k]

Phil Allison <philallison@optusnet.com.au> wrote:

"eug k" <wired_au@change-this-to-ho.tmail.com

Does anyone know if there are any australian sources for
9.6V PP3s? i.e. the usual rectangular 9V batts.

The usual rechargable "9V" batts are 7.2-8.4V, too low for
radio mics and heaps of other stuff.



** Bullshit - the 8.4 volt NiMH ones work just fine in radio mics.

Do you think a 9 volt alkaline stays at that voltage while it is being
discharged ????

Alkalines usually drop to around 8.2-8.4V after about 3-4 hours
in the mics I use. There certainly are more dropouts the
lower the voltage gets. NiMH - the 7.2V ones are hopeless and the
8.4V ones don't last very long, so i'm after the 9V ones which also
happen to have a higher capacity.


Thanks for your politeness.


--

 

[eug k]

Desmond Wong <des_nospam@ihug.com.au> wrote:

Jaycar have the true 9V Lexcel batteries, I have one here. I have used this
in the past instead of the standard 7.2V PP3 batteries as I required 27V to
drive a certain device.

can't seem to find it - do you have a link or cat no?


thanks

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:c5csso$9al$1@bunyip.cc.uq.edu.au...
hi,

Does anyone know if there are any australian sources for
9.6V PP3s? i.e. the usual rectangular 9V batts. The
usual rechargable "9V" batts are 7.2-8.4V, too low for
radio mics and heaps of other stuff.

thanks!


--

--

 

[Phil Allison]

"eug k" <

Phil Allison

Does anyone know if there are any australian sources for
9.6V PP3s? i.e. the usual rectangular 9V batts.

The usual rechargable "9V" batts are 7.2-8.4V, too low for
radio mics and heaps of other stuff.


** Bullshit - the 8.4 volt NiMH ones work just fine in radio mics.

Do you think a 9 volt alkaline stays at that voltage while it is
being
discharged ????

Alkalines usually drop to around 8.2-8.4V after about 3-4 hours
in the mics I use.

** By which time you have used only 30 % of their capacity.

There certainly are more dropouts the
lower the voltage gets.

** Absolute bullshit. For the signal to drop out requires a 30 dB or
more loss of RF level - the loss of 1 volt of battery voltage causes only
1 dB.

NiMH - the 7.2V ones are hopeless and the
8.4V ones don't last very long,

** That is NOT the experience of other radio mic users.

so i'm after the 9V ones which also
happen to have a higher capacity.

** Hardly likely since the higher voltage means the drain will be higher
while the cells inside the battery are smaller and their capacity less.





............... Phil

 

[eug k]

Phil Allison <philallison@optusnet.com.au> wrote:

"eug k"
Phil Allison

** Bullshit - the 8.4 volt NiMH ones work just fine in radio mics.

Do you think a 9 volt alkaline stays at that voltage while it is
being
discharged ????

Alkalines usually drop to around 8.2-8.4V after about 3-4 hours
in the mics I use.


** By which time you have used only 30 % of their capacity.

The mics I use mute in the 7V range.

There certainly are more dropouts the
lower the voltage gets.


** Absolute bullshit. For the signal to drop out requires a 30 dB or
more loss of RF level - the loss of 1 volt of battery voltage causes only
1 dB.

How often do you use them?

NiMH - the 7.2V ones are hopeless and the
8.4V ones don't last very long,


** That is NOT the experience of other radio mic users.

I get about 3 hours out of a 8.4V Varta NiMH PP3 with a Sennheiser
ew100-series mic.

What do you get?

What do other people get?

so i'm after the 9V ones which also
happen to have a higher capacity.


** Hardly likely since the higher voltage means the drain will be higher
while the cells inside the battery are smaller and their capacity less.

There are 200-260mAh 9V NiMH batteries out there. The common
8.4V variety are 140-160mAh.

I suppose you'll say those figures are false. Does anyone
have any real-life experience with these high-capacity 9V
NiMH PP3s?

260mAh 9V - http://www.thomas-distributing.com/ip_9V_260.htm
200mAh 9V - http://www.thomas-distributing.com/ap-200-1.htm



--

 

[Bob Urz]

Phil Allison wrote:

"eug k"

Phil Allison

Does anyone know if there are any australian sources for
9.6V PP3s? i.e. the usual rectangular 9V batts.

The usual rechargable "9V" batts are 7.2-8.4V, too low for
radio mics and heaps of other stuff.


** Bullshit - the 8.4 volt NiMH ones work just fine in radio mics.

Do you think a 9 volt alkaline stays at that voltage while it is

being

discharged ????

Alkalines usually drop to around 8.2-8.4V after about 3-4 hours
in the mics I use.



** By which time you have used only 30 % of their capacity.



There certainly are more dropouts the
lower the voltage gets.



** Absolute bullshit. For the signal to drop out requires a 30 dB or
more loss of RF level - the loss of 1 volt of battery voltage causes only
1 dB.




NiMH - the 7.2V ones are hopeless and the
8.4V ones don't last very long,



** That is NOT the experience of other radio mic users.



so i'm after the 9V ones which also
happen to have a higher capacity.



** Hardly likely since the higher voltage means the drain will be higher
while the cells inside the battery are smaller and their capacity less.





.............. Phil

This is what the op is looking for:

http://www.thomas-distributing.com/9v_nimh_batteries.htm


The 7.2 volt rechargeable are very marginal in most wireless mikes.
And keep in mind there only 7.2 at full charge.
(most early NIcad 9 volts were 7.2 volts)
Same for the 8.4. They will also drop below that figure.
Some mikes will work fine with the 8.4's at some reduced
time and output capacity. Some are not so happy with them.
Depends how many hours you think they should work on
a charge. The 9.6's we have had good luck with.
They do require a special smart charger.
The voltage may be higher than a standard alkaline, but the
current capacity is not as great in most cases. So in a run
to the dead race, the alkaline would probably win. Most of
us who use wireless don't necessarily use them in a 4 to 8 hour
continuous on mode, so the rechargables work fine and can be more
economical over the long run. Just a note: most broadway shows
only use alkalines.


While i would not tell you NOT to buy a 8.4 NiMH, the 9.6 volt
ones will do a better job in most applications. But they are
a factor of 2x to 4x more expensive for the most part. And they
require a special smart charger to get maximum life and output
out of them. Most common battery stores do not carry the 9.6 volt
rechargables. You have to look close at the labeling to tell for sure.
Do your research on both voltage output and current capacity before you
buy.


What gets me is that there could be three voltages available
for a 9 volt rechargeable batteries. The 7.2 volt ones should have
never been allowed on the market as a true 9 volt replacement

Bob






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[Phil Allison]

"eug k" <
Phil Allison <

** Bullshit - the 8.4 volt NiMH ones work just fine in radio
mics.

Do you think a 9 volt alkaline stays at that voltage while it
is
being discharged ????

Alkalines usually drop to around 8.2-8.4V after about 3-4 hours
in the mics I use.


** By which time you have used only 30 % of their capacity.

The mics I use mute in the 7V range.

** Then why make utterly false claims about a 8.4 volt battery with a near
constant output voltage ???????????

Quote: "The usual rechargable "9V" batts are 7.2-8.4V, too low for radio
mics and heaps of other stuff. "

There certainly are more dropouts the
lower the voltage gets.


** Absolute bullshit. For the signal to drop out requires a 30 dB or
more loss of RF level - the loss of 1 volt of battery voltage causes
only
1 dB.

How often do you use them?

** I service and test radio mics - plus deal regularly with idiots like
you making false complaints.

NiMH - the 7.2V ones are hopeless and the
8.4V ones don't last very long,


** That is NOT the experience of other radio mic users.

I get about 3 hours out of a 8.4V Varta NiMH PP3 with a Sennheiser
ew100-series mic.

** That battery has only a 120mAh rating - Jaycar sell one that is rated
at 200mAh ( cat. SB 2467)

Are you still so fucking dumb you cannot see the real issue is
**mAhs** NOT voltage ????

so i'm after the 9V ones which also
happen to have a higher capacity.


** Hardly likely since the higher voltage means the drain will be
higher
while the cells inside the battery are smaller and their capacity less.

There are 200-260mAh 9V NiMH batteries out there.

** Some say there are little green men out here too - are you one of them
??




.............. Phil

 

[eug k]

eug k <wired_au@change-this-to-ho.tmail.com> wrote:

Phil Allison <philallison@optusnet.com.au> wrote:
"eug k"

I get about 3 hours out of a 8.4V Varta NiMH PP3 with a Sennheiser
ew100-series mic.

p.s. that battery was charged with an intelligent dv/dt
charger.



--

 

[eug k]

Phil Allison <philallison@optusnet.com.au> wrote:

"eug k"
Phil Allison

Do you think a 9 volt alkaline stays at that voltage while it
is
being discharged ????

Alkalines usually drop to around 8.2-8.4V after about 3-4 hours
in the mics I use.


** By which time you have used only 30 % of their capacity.

The mics I use mute in the 7V range.

** Then why make utterly false claims about a 8.4 volt battery with a near
constant output voltage ???????????

Quote: "The usual rechargable "9V" batts are 7.2-8.4V, too low for radio
mics and heaps of other stuff. "

"Too low" does not mean "does not work".
"Too low" in my case means "unsatisfactory". I should have specified
that the capacity was too low. Unfortunately I'm not perfect enough
for you.

** Absolute bullshit. For the signal to drop out requires a 30 dB or
more loss of RF level - the loss of 1 volt of battery voltage causes
only
1 dB.

How often do you use them?

** I service and test radio mics - plus deal regularly with idiots like
you making false complaints.

"service and test" is completely different to using it in a
real-life environment. It's like someone who has a lot of head
knowledge but less hands-on, real-world experience.

Of course, you'd disagree. You know everything and are the
best in everything.

NiMH - the 7.2V ones are hopeless and the
8.4V ones don't last very long,


** That is NOT the experience of other radio mic users.

I get about 3 hours out of a 8.4V Varta NiMH PP3 with a Sennheiser
ew100-series mic.


** That battery has only a 120mAh rating - Jaycar sell one that is rated
at 200mAh ( cat. SB 2467)

You are wrong.
http://users.bigpond.net.au/eug/varta-9v.jpg

If I had your attitude, I would curse and swear at you, calling
you stupid because you were too dumb to get that right.

But I'm not, I know people aren't perfect.

Thanks for the jaycar cat no, I might try that one out.

Are you still so fucking dumb you cannot see the real issue is
**mAhs** NOT voltage ????

I do pity everybody you know. You certainly seem like someone
with a huge attitude problem who's quite up himself.

so i'm after the 9V ones which also
happen to have a higher capacity.


** Hardly likely since the higher voltage means the drain will be
higher
while the cells inside the battery are smaller and their capacity less.

There are 200-260mAh 9V NiMH batteries out there.


** Some say there are little green men out here too - are you one of them
??

260mAh 9V - http://www.thomas-distributing.com/ip_9V_260.htm
200mAh 9V - http://www.thomas-distributing.com/ap-200-1.htm


Don't bother replying, I don't think I'll bother following it
up.

(as if you could resist


--

 

[Phil Allison]

"eug k" <

Phil Allison

** Then why make utterly false claims about a 8.4 volt battery with a
near
constant output voltage ???????????

Quote: "The usual rechargable "9V" batts are 7.2-8.4V, too low for
radio
mics and heaps of other stuff. "

"Too low" does not mean "does not work".
"Too low" in my case means "unsatisfactory". I should have specified
that the capacity was too low.

** YOU specified VOLTAGE as the issue - you asked for a higher
VOLTAGE battery.

Unfortunately I'm not perfect enough for you.

** What you are is a DAMN LIAR.

** Absolute bullshit. For the signal to drop out requires a 30 dB
or
more loss of RF level - the loss of 1 volt of battery voltage
causes
only 1 dB.

How often do you use them?

** I service and test radio mics - plus deal regularly with idiots
like
you making false complaints.

"service and test" is completely different to using it in a
real-life environment.

** Absolute BULLSHIT

The RF output from a radio mic and battery run time do NOT depend of where
it is used.

It's like someone who has a lot of head
knowledge but less hands-on, real-world experience.

** The only thing you have your hands on experience with is your dick -
bet that does not last long enough for you either.

I get about 3 hours out of a 8.4V Varta NiMH PP3 with a Sennheiser
ew100-series mic.


** That battery has only a 120mAh rating - Jaycar sell one that is
rated
at 200mAh ( cat. SB 2467)

You are wrong.

** Not at all - you stupidly failed to specify which Varta battery you
were bullshitting about.

Farnell sell a 9 volt, 120 mAH, NimH by Varta - called an "Accu Plus".

If I had your attitude, I would curse and swear at you, calling
you stupid because you were too dumb to get that right.

** I despise narcissistic turds like you.

Thanks for the jaycar cat no, I might try that one out.

** Go stick one up your arse.




............. Phil

 

[eug k]

Phil Allison <philallison@optusnet.com.au> wrote:

"eug k"
Phil Allison

[....]

*yawn* nothing new I guess, looking at Phil Allison's
reputation for having a massive attitude problem and
a foul mouth.

I really wonder what people like them are like in real life.

oh well, life goes on!


p.s. If a person doesn't specify which model battery he
was talking about, I wouldn't simply pluck a model out
of a catalog and pretend like I knew exactly what he
had, and when I'm proven to be wrong, say it's his fault.



--

 

[eug k]

hi bob,

Bob Urz <sound@inetnebr.com> wrote:

This is what the op is looking for:

http://www.thomas-distributing.com/9v_nimh_batteries.htm

Yup, that's exactly it.. I was hoping for a local supplier
though, so I can just buy one first to test. It would be
pretty painful if I ordered 10 from the US and they were
unsuitable for my use!

[....]

Same for the 8.4. They will also drop below that figure.
Some mikes will work fine with the 8.4's at some reduced
time and output capacity. Some are not so happy with them.
Depends how many hours you think they should work on
a charge. The 9.6's we have had good luck with.

That's good, what do you use them with? What sort of life
do you get?

I'm planning on using them with a senn h/h and lav, and
a dB IEM.

They do require a special smart charger.
The voltage may be higher than a standard alkaline, but the

the OCV of the batch of Procells that I have is about 9.35V,
so I suppose 9.6V isn't too far off.

current capacity is not as great in most cases. So in a run
to the dead race, the alkaline would probably win. Most of
us who use wireless don't necessarily use them in a 4 to 8 hour
continuous on mode, so the rechargables work fine and can be more
economical over the long run. Just a note: most broadway shows
only use alkalines.

Yeah, I've wondered about that. The satellite TV broadcaster
my friend works as only use Procells, one battery per session.
I think they'd still save money if they used a nimh batt and
changed it every three months...

but oh well, i guess one can't complain about getting free
partial-charge batteries.

While i would not tell you NOT to buy a 8.4 NiMH, the 9.6 volt
ones will do a better job in most applications. But they are
a factor of 2x to 4x more expensive for the most part. And they
require a special smart charger to get maximum life and output
out of them. Most common battery stores do not carry the 9.6 volt
rechargables. You have to look close at the labeling to tell for sure.
Do your research on both voltage output and current capacity before you
buy.

Thomas Distributing has a 10-battery dv/dt charger that makes
the whole deal more attractive. Previously I didn't know
they had it, so I didn't bother too much about rechargables as
it's too much of a hassle to swap batteries in the charger all
the time.

So far the highest-capacity battery I've seen is a 9.6V 260mAh
one from the same place. I don't know how accurate the rating is,
so I'm hoping for someone's real-life experience.

What gets me is that there could be three voltages available
for a 9 volt rechargeable batteries. The 7.2 volt ones should have
never been allowed on the market as a true 9 volt replacement

Yeah, that sounds pretty silly... 7.2V is quite a distance away
from 9v!


thanks for the civilized reply.


--

 

[Phil Allison]

"eug k" <wired_au@change-this-to-ho.tmail.com> :> >

http://www.thomas-distributing.com/9v_nimh_batteries.htm

Yup, that's exactly it..

** Nope - the 9 volt batteries on that page are mostly ( if not all )
made from 7 cells - so are 8.4 volt nominal.

All the 200mAh or better ones *** SPECIFY ** 8.4 or 8.6 volts
nominal.

Read the fine print carefully - you dickhead.





........... Phil