Lithium Ion standard batteries

[Jasen Betts]

On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard AA, AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up the rest of the
length.

--
Neither the pheasant plucker, nor the pheasant plucker's son.


--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

 

[Damian]

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
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"Phil Allison" <phil_a@tpg.com.au> wrote in message
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"Damian"


I assume its in fact a 'normal' 3.7 volt lithium cell
internally, with a buck converter holding the output voltage at
1.5 volts - neat.

What the technical difficulty behind producing a plain 1.5V
Lithium Ion cell?
Why does it has to be 3.7V with a buck converter?


** Wot a staggeringly stupid question.

Ever see a 1.5V NiCd, NiMH or SLA cell ?

I see heaps of 1.5 NiCD, NiMH Batteries.

No you don’t, you actually see heaps of people
claiming those are 1.5V when they are not.

You are right. I didn't take 0.3 V difference into account.


No ?

I don't care about seeing a cell.

You said you did with the original question.

I was just being figurative.
Just desperate to see a 1.2 - 1.8 V AA, AAA rechargeable lithium ion
battery.
Ain't gonna happen, right?

Correct. The best you will ever get is a standard 3.7V cell with a
buck converter.

And a one with a 'built in' buck converter won't be the standard AA,
AAA size, right?

No reason why they cant be.

Why aren't they around?

Mainly because of the difficulty with charging those in that format.

Why difficult?
The charging voltage, just need to be around 4V or so.
If can be separate charger or if you wanna charge the 1.2V Lithium Ion
AA/AAA battery while inside the appliance,
simply create the appropriate circuit inside the appliance, but too much
trouble for moblie phone manufacturers??!!!
If that's the case, a separate charger with minimum 4V and if necessary
balancing circuit for multiple batteries charging in the same charger.
All that can't be rocket science?!

Just need batteries, and if the battery happens to be a single
cell, I'm happy with that.

But that can only be done with the buck converter you
said you don’t want.

It doesn't sound like I have a choice, now, do I?


Wonder why ?

All the time.
Why don't you enlighten me?

The chemistry of the cell determines the voltage it produces.

Yep. Just read some of the related chemistry and got myself
enlightened.


Hint: Cells are not electronic components.

Couldnt get that hint.
Would you care to elaborate?

Just did.

Yep, They are chemical piece of shits, that was invented to screw the
shit out me. ;-)

 

[Damian]

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...

On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard AA, AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up the rest
of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

 

[Damian]

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm3854Fa722U1@mid.individual.net...

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldhdrp$4gb$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:blriomFl8m1U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ld9mun$f1n$1@dont-email.me...

"Phil Allison" <phil_a@tpg.com.au> wrote in message
news:blqr5lFgpq2U1@mid.individual.net...

"Phil the sexually deprived shithead "

"Phil Allison"


I assume its in fact a 'normal' 3.7 volt lithium cell
internally, with a buck converter holding the output voltage at
1.5 volts - neat.

What the technical difficulty behind producing a plain 1.5V
Lithium Ion cell?
Why does it has to be 3.7V with a buck converter?


** Wot a staggeringly stupid question.

Ever see a 1.5V NiCd, NiMH or SLA cell ?

I see heaps of 1.5 NiCD, NiMH Batteries.


** You are a damn liar.

How so?!

What do you call the 1.2V NiCds and NiMHs we use.


** 1.2V rechargeable cells is what they are.

A 4 cell pack is called *4.8V*, a 6 cell pack is called * 7.2V * etc.


Ok, I get it. 0.3 V difference means a lot to you! right?!


** The fact they are * not 1.5V * has been a sore point with uses
ever since NiCd and NiMh cells first appeared.

Not such an big issue nowadays, as most battery operated electronic
items have voltage regulators built in - so they are equally happy
with 1.2V as 1.5V.

Doesn't explain a damn thing.

It does actually.

It's more like the appliances made to work with 1.2 V, instead of
1.5V minimum.

That’s what he said.

The regulator comes in handy to handle the excess 0.3V(XXX) with the
alcaline ones.

You don’t need any regulator for that, just allow the device to work
fine
with any voltage from 1.6-1.1V

Step down voltage regulation aint' intended.

Try that again in english instead of gobbledegook.

The best I can do.

Even you can do better than that.

Why should I?
You suppose to know this stuf better than I do, right?

I do invent terms at times, but should not be too hard to get the point.

Still haven't got a clue what you meant with that sentence.

That, some modern appliances have built in regulators to protect from excess
voltage.
Not specifically do deal with the inventions of NiCD, NiMH lack of 0.3 V,
comparing to
alkaline batteries. The old appliances made to work with 1.5V, still works
with 1.2 V NiCDs and NiMHs,
'cos it hasn't been making that much of a huge impact on proper performance.
NiCDs and NiMHs ability to
provide high currents compensated for that.
Same goes for modern mobile phones and stuff.
They haven't got some magical 'step up regulator' to deal with 1.2V
rechargeables 'cos they are built for 1.5Vs,
or they haven't got some magical 'step down regulator' to deal with 1.5V
alkalines, 'cos they are built for 1.2V max.
My point is 0.3V difference is practically jackshit, and only becomes a
problem when the battery gets close to the death or discharge.
Correct me if I'm wrong.

Torches, lamps, etc we use with NiCDs, NiMHs, don't whinge about the
lack of 0.3V(xxx).

Neither do well designed electronic devices either.

Key word is 'well designed'.

Its most of them now in that respect.

It's that some of them shit themselves when above 1.5V max is given.

Very few actually do.

That 'cos mobile phones, tablets, etc come with voltage regulation.

No, its because very little in the way of electronics is that sensitive
on the supply voltage.

But, there are enough electronic devices out there, that are sensitive to
excess voltage.

Not by that small an amount.

So, teh torches, etc are happy with 1.2V, 'cos the extra current comes
with NiCDs, NiMHs is handy.

They are actually current devices, not voltage, with leds.

That is a total misconception and fundamentally incorrect statement.

Nope. They work on current, not voltage.

Current and voltage are directly related.

Not with leds they aren't.

These were two measuring concepts created at the time of coming up with
Ohms law.

Ohms law doesn’t apply to leds.

 

[Rod Speed]

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
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"Damian" <damian_andrews75@yahoo.com.au> wrote in message
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"Phil Allison" <phil_a@tpg.com.au> wrote in message
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"Damian"


I assume its in fact a 'normal' 3.7 volt lithium cell
internally, with a buck converter holding the output voltage at
1.5 volts - neat.

What the technical difficulty behind producing a plain 1.5V
Lithium Ion cell?
Why does it has to be 3.7V with a buck converter?


** Wot a staggeringly stupid question.

Ever see a 1.5V NiCd, NiMH or SLA cell ?

I see heaps of 1.5 NiCD, NiMH Batteries.

No you don’t, you actually see heaps of people
claiming those are 1.5V when they are not.

You are right. I didn't take 0.3 V difference into account.


No ?

I don't care about seeing a cell.

You said you did with the original question.

I was just being figurative.
Just desperate to see a 1.2 - 1.8 V AA, AAA rechargeable lithium ion
battery.
Ain't gonna happen, right?

Correct. The best you will ever get is a standard 3.7V cell with a
buck converter.

And a one with a 'built in' buck converter won't be the standard AA,
AAA size, right?

No reason why they cant be.

Why aren't they around?

Mainly because of the difficulty with charging those in that format.

Why difficult?

It isnt easy to do the fancy charging those need with the buck converter
there and no easy way to turn the buck converter off in that format.

> The charging voltage, just need to be around 4V or so.

Pity about the buck converter and the way they are charged.

If can be separate charger or if you wanna charge the 1.2V Lithium Ion
AA/AAA battery while inside the appliance,
simply create the appropriate circuit inside the appliance,

Not even possible with that format.

> but too much trouble for moblie phone manufacturers??!!!

No point in AA/AAA for those.

If that's the case, a separate charger with minimum 4V and if necessary
balancing circuit for multiple batteries charging in the same charger.
All that can't be rocket science?!

It is with that format that only has 2 electrical contacts.

Just need batteries, and if the battery happens to be a single
cell, I'm happy with that.

But that can only be done with the buck converter you
said you don’t want.

It doesn't sound like I have a choice, now, do I?


Wonder why ?

All the time.
Why don't you enlighten me?

The chemistry of the cell determines the voltage it produces.

Yep. Just read some of the related chemistry and got myself
enlightened.


Hint: Cells are not electronic components.

Couldnt get that hint.
Would you care to elaborate?

Just did.

Yep, They are chemical piece of shits, that was invented to screw
the shit out me. ;-)

 

[Rod Speed]

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

 

[Rod Speed]

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj468$ttt$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm3854Fa722U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldhdrp$4gb$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:blriomFl8m1U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ld9mun$f1n$1@dont-email.me...

"Phil Allison" <phil_a@tpg.com.au> wrote in message
news:blqr5lFgpq2U1@mid.individual.net...

"Phil the sexually deprived shithead "

"Phil Allison"


I assume its in fact a 'normal' 3.7 volt lithium cell
internally, with a buck converter holding the output voltage at
1.5 volts - neat.

What the technical difficulty behind producing a plain 1.5V
Lithium Ion cell?
Why does it has to be 3.7V with a buck converter?


** Wot a staggeringly stupid question.

Ever see a 1.5V NiCd, NiMH or SLA cell ?

I see heaps of 1.5 NiCD, NiMH Batteries.


** You are a damn liar.

How so?!

What do you call the 1.2V NiCds and NiMHs we use.


** 1.2V rechargeable cells is what they are.

A 4 cell pack is called *4.8V*, a 6 cell pack is called * 7.2V * etc.


Ok, I get it. 0.3 V difference means a lot to you! right?!


** The fact they are * not 1.5V * has been a sore point with uses
ever since NiCd and NiMh cells first appeared.

Not such an big issue nowadays, as most battery operated electronic
items have voltage regulators built in - so they are equally happy
with 1.2V as 1.5V.

Doesn't explain a damn thing.

It does actually.

It's more like the appliances made to work with 1.2 V, instead of
1.5V minimum.

That’s what he said.

The regulator comes in handy to handle the excess 0.3V(XXX) with the
alcaline ones.

You don’t need any regulator for that, just allow the device to work
fine
with any voltage from 1.6-1.1V

Step down voltage regulation aint' intended.

Try that again in english instead of gobbledegook.

The best I can do.

Even you can do better than that.

Why should I?

Because you are the one who tried to say something in that
particular sentence that no one else can see what you meant.

> You suppose to know this stuf better than I do, right?

Separate matter entirely to what that particular sentence meant.

I do invent terms at times, but should not be too hard to get the point.

Still haven't got a clue what you meant with that sentence.

That, some modern appliances have built in regulators to protect from
excess voltage.
Not specifically do deal with the inventions of NiCD, NiMH lack of 0.3 V,
comparing to
alkaline batteries. The old appliances made to work with 1.5V, still works
with 1.2 V NiCDs and NiMHs,
'cos it hasn't been making that much of a huge impact on proper
performance. NiCDs and NiMHs ability to
provide high currents compensated for that.

Not with the electronic devices being discussed.

Same goes for modern mobile phones and stuff.
They haven't got some magical 'step up regulator' to deal with 1.2V
rechargeables 'cos they are built for 1.5Vs,

Haven't been for a long time now.

or they haven't got some magical 'step down regulator' to deal with 1.5V
alkalines, 'cos they are built for 1.2V max.

Like hell they are.

My point is 0.3V difference is practically jackshit, and only becomes a
problem when the battery gets close to the death or discharge.
Correct me if I'm wrong.

You are, as always.

Torches, lamps, etc we use with NiCDs, NiMHs, don't whinge about the
lack of 0.3V(xxx).

Neither do well designed electronic devices either.

Key word is 'well designed'.

Its most of them now in that respect.

It's that some of them shit themselves when above 1.5V max is given.

Very few actually do.

That 'cos mobile phones, tablets, etc come with voltage regulation.

No, its because very little in the way of electronics is that sensitive
on the supply voltage.

But, there are enough electronic devices out there, that are sensitive
to excess voltage.

Not by that small an amount.

So, teh torches, etc are happy with 1.2V, 'cos the extra current comes
with NiCDs, NiMHs is handy.

They are actually current devices, not voltage, with leds.

That is a total misconception and fundamentally incorrect statement.

Nope. They work on current, not voltage.

Current and voltage are directly related.

Not with leds they aren't.

These were two measuring concepts created at the time of coming up with
Ohms law.

Ohms law doesn’t apply to leds.

 

[Damian]

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to charging
sucha hypothetical battery?

 

[Rod Speed]

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn’t have to, but until someone does an ic that
does that auto, it is a problem with offering that.

 

[Jasen Betts]

On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn’t have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries? they seem like
a good fit for lithium ion, charge at 4.5-5.5V discharge
through different terminals at 1.5V

--
Neither the pheasant plucker, nor the pheasant plucker's son.


--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

 

[Rod Speed]

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...

On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn’t have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

 

[Damian]

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm8ph1Ffkg2U1@mid.individual.net...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...
On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up
the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn't have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

I think, Jason meant charging the AA/AAA+buck converter batteries(1.5V)
using USB chargers?
There are USB chargers for existing 1.2V rechargable batteries.

 

[Rod Speed]

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldo022$dh$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm8ph1Ffkg2U1@mid.individual.net...


"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...
On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up
the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn't have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

I think, Jason meant charging the AA/AAA+buck converter batteries(1.5V)
using USB chargers?

If that is what he meant, it wouldn’t work.

> There are USB chargers for existing 1.2V rechargable batteries.

Which don’t have buck converters.

 

[Jasen Betts]

On 2014-02-15, Rod Speed <rod.speed.aaa@gmail.com> wrote:

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...
On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn’t have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

http://search.jaycar.com.au/search?w=%20SB1755&view=list

they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

there are on these ones.

these are NiMH, but a lithium version could be done.

--
Neither the pheasant plucker, nor the pheasant plucker's son.


--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

 

[Rod Speed]

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldojrq$cj8$1@gonzo.reversiblemaps.ath.cx...

On 2014-02-15, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...
On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up
the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn’t have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

http://search.jaycar.com.au/search?w=%20SB1755&view=list


they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

there are on these ones.

these are NiMH, but a lithium version could be done.

No, because USB does not provided the charging protocol you
need for lithium ion.

 

[Jasen Betts]

On 2014-02-15, Rod Speed <rod.speed.aaa@gmail.com> wrote:

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldojrq$cj8$1@gonzo.reversiblemaps.ath.cx...
On 2014-02-15, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...
On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up
the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn’t have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

http://search.jaycar.com.au/search?w=%20SB1755&view=list


they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

there are on these ones.

these are NiMH, but a lithium version could be done.

No, because USB does not provided the charging protocol you
need for lithium ion.

neither does it for NiMH, you'd need a chip in there to
regulate the charging.

--
Neither the pheasant plucker, nor the pheasant plucker's son.

--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

 

[Rod Speed]

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldotu6$erj$2@gonzo.reversiblemaps.ath.cx...

On 2014-02-15, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldojrq$cj8$1@gonzo.reversiblemaps.ath.cx...
On 2014-02-15, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...
On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the
standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up
the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn’t have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

http://search.jaycar.com.au/search?w=%20SB1755&view=list


they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

there are on these ones.

these are NiMH, but a lithium version could be done.

No, because USB does not provided the charging protocol you
need for lithium ion.

neither does it for NiMH, you'd need a chip in there to
regulate the charging.

What I said. If you have a chip that can do it, there is no
point in going the USB route and losing a large chunk
of the AA and it isnt even possible with a AAA

 

[Damian]

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bma8kdFpl8eU1@mid.individual.net...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldojrq$cj8$1@gonzo.reversiblemaps.ath.cx...
On 2014-02-15, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...
On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up
the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn't have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

http://search.jaycar.com.au/search?w=%20SB1755&view=list


they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

there are on these ones.

these are NiMH, but a lithium version could be done.

No, because USB does not provided the charging protocol you
need for lithium ion.

By that you meant, charging protocol for my 'hypothetical' AA/AAA 1.5V
Lithium Ion battery(which has a built in buck converter)?
Right?
We do charge mobile phone lithium ion batteries(3.7V) with USB. So, I'm
guessing, it can't be that hard for somebody to come up with a charger to
charge such 'hypothetical' batteries?

 

[Rod Speed]

"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldu856$tv8$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bma8kdFpl8eU1@mid.individual.net...


"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldojrq$cj8$1@gonzo.reversiblemaps.ath.cx...
On 2014-02-15, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldmo4s$rus$4@gonzo.reversiblemaps.ath.cx...
On 2014-02-14, Rod Speed <rod.speed.aaa@gmail.com> wrote:


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldju4q$fbc$1@dont-email.me...

"Rod Speed" <rod.speed.aaa@gmail.com> wrote in message
news:bm4kj0Fjl40U1@mid.individual.net...


"Damian" <damian_andrews75@yahoo.com.au> wrote in message
news:ldj448$tds$1@dont-email.me...

"Jasen Betts" <jasen@xnet.co.nz> wrote in message
news:ldig19$rtf$2@gonzo.reversiblemaps.ath.cx...
On 2014-02-12, Damian <damian_andrews75@yahoo.com.au> wrote:

And a one with a 'built in' buck converter won't be the
standard
AA,
AAA
size, right?

could be a 2/3 or 3/4 length AA size with the converter making up
the
rest of the
length.

The whole thing can be packaged to look like a AA or AAA 1.2-1.5V
rechargeable Lithium Ion battery.
But, I don't see them anywhere!!!

Because of the difficulty with charging those in that format.

So, in a nutshell, buck converter gets in the way when it comes to
charging sucha hypothetical battery?

Doesn't have to, but until someone does an ic that
does that auto, it is a problem with offering that.

what about those USB charged AA batteries?

There is no such animal.

http://search.jaycar.com.au/search?w=%20SB1755&view=list


they seem like a good fit for lithium ion, charge at
4.5-5.5V discharge through different terminals at 1.5V

There are no different terminals with AA and AAA batteries.

there are on these ones.

these are NiMH, but a lithium version could be done.

No, because USB does not provided the charging protocol you
need for lithium ion.

By that you meant, charging protocol for my 'hypothetical' AA/AAA 1.5V
Lithium Ion battery(which has a built in buck converter)?
Right?

More that the Lithium Ion battery behind the buck
converter still needs the lithium ion charging protocol.

> We do charge mobile phone lithium ion batteries(3.7V) with USB.

Sure, but in that case USB is just the source of the current used to charge
the lithium ion batterys and the phone provides the charging protocol.

Yes, an IC instead of the buck converter could to that with a lithium ion
AA or AAA battery, but then we are back to what I originally said, the lack
of an ic to do that.

So, I'm guessing, it can't be that hard for somebody to come up with a
charger to charge such 'hypothetical' batteries?

Impossible actually with the buck converter getting in the way of charging
it.

Yes, that could certainly be replaced with an ic as I originally said.

 

[Petzl]

On Tue, 18 Feb 2014 11:05:50 +1100, "Damian"
<damian_andrews75@yahoo.com.au> wrote:

No, because USB does not provided the charging protocol you
need for lithium ion.

By that you meant, charging protocol for my 'hypothetical' AA/AAA 1.5V
Lithium Ion battery(which has a built in buck converter)?
Right?
We do charge mobile phone lithium ion batteries(3.7V) with USB. So, I'm
guessing, it can't be that hard for somebody to come up with a charger to
charge such 'hypothetical' batteries?

Better solve this!
Looks like your new shoes will need recharging!
http://newsfeed.time.com/2014/02/16/back-to-the-future-marty-mcfly-power-laces-coming-2015/
http://tinyurl.com/qbygbte
--
Petzl
I started with nothing and I am proud to say I still have most of it left