Charge gel cell with car charger?

[Mike Perkins]

On 24/02/2013 08:06, Mike Cook wrote:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge
rate (selectable) was 0.5A. Afterward the trimmer seemed to work as
new.

For how long?

Can the car charger be used to charge this battery? He can install a
timer to limit charge time if that's something required.

Lead acid batteries are fickle things but last a long time if looked after.

I would prefer to use a charger that could detect end point and either
turn off or supply a constant voltage. There are some car battery
chargers that do this.

A final thing is to check battery terminal voltage. During a fast
charge you might accept a voltage of 14.5V, but under long term (float
charge) I wouldn't want the charger to push out more that 13.8V.

--
Mike Perkins
Video Solutions Ltd
www.videosolutions.ltd.uk

 

[Ian Field]

"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...

On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker") which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the more
modern electronic/microcontroller type chargers that automatically switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

 

[John Fields]

On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
<gangprobing.alien@ntlworld.com> wrote:

"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...
On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker") which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the more
modern electronic/microcontroller type chargers that automatically switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks" and you reply with snippage and
dodging.

--
JF

 

[Ian Field]

"John Fields" <jfields@austininstruments.com> wrote in message
news:gh9qi8t3alcietnh2r674clj7ne976j2af@4ax.com...

On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...
On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the
more
modern electronic/microcontroller type chargers that automatically
switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks"

No you didn't (the senility really is robbing your faculties!) The trick was
already described by someone else - I merely replied I do that too (and no -
I can't be bothered drawing pictures because you're too thick to
understand).

You're not only wrong, but stumbling about in a state of advanced dementia.

 

[John Fields]

On Tue, 26 Feb 2013 21:43:13 -0000, "Ian Field"
<gangprobing.alien@ntlworld.com> wrote:

"John Fields" <jfields@austininstruments.com> wrote in message
news:gh9qi8t3alcietnh2r674clj7ne976j2af@4ax.com...
On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...
On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the
more
modern electronic/microcontroller type chargers that automatically
switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks"

No you didn't (the senility really is robbing your faculties!) The trick was
already described by someone else - I merely replied I do that too (and no -
I can't be bothered drawing pictures because you're too thick to
understand).

---
My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

Unlike you, I've done empirical work which has resulted in published
plots of tungsten lamp filament resistances being functions of
voltages across, and currents through the filament.

I'll email you the plots, if you like.

Your admission to being a copycat hardly qualifies you as an
authority, and certainly explains why you "can't be bothered drawing
pictures" of what you can't envision.
---

You're not only wrong, but stumbling about in a state of advanced dementia.

---
Wow, with your super-quick response, you must really want me to notice
you and have you suck my dick or have me fuck you up the ass...

Sorry, Charlie...

--
JF

 

[Jamie]

John Fields wrote:

On Tue, 26 Feb 2013 21:43:13 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:gh9qi8t3alcietnh2r674clj7ne976j2af@4ax.com...

On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...

On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...

On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:


A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the
more
modern electronic/microcontroller type chargers that automatically
switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks"

No you didn't (the senility really is robbing your faculties!) The trick was
already described by someone else - I merely replied I do that too (and no -
I can't be bothered drawing pictures because you're too thick to
understand).


---
My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

Unlike you, I've done empirical work which has resulted in published
plots of tungsten lamp filament resistances being functions of
voltages across, and currents through the filament.

I'll email you the plots, if you like.

Your admission to being a copycat hardly qualifies you as an
authority, and certainly explains why you "can't be bothered drawing
pictures" of what you can't envision.
---


You're not only wrong, but stumbling about in a state of advanced dementia.


---
Wow, with your super-quick response, you must really want me to notice
you and have you suck my dick or have me fuck you up the ass...

Sorry, Charlie...

One of your fetishes?

Jamie

 

[John Fields]

On Tue, 26 Feb 2013 18:44:16 -0500, Jamie
<jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Fields wrote:

Wow, with your super-quick response, you must really want me to notice
you and have you suck my dick or have me fuck you up the ass...

Sorry, Charlie...

One of your fetishes?

Jamie

---
No, just conjecture, but it's interesting how, when the conversation
turns lewd, you people are drawn to it like a moth to a flame.

--
JF

 

[Ian Field]

"John Fields" <jfields@austininstruments.com> wrote in message
news:mcbqi8t00ur6s6sk6kmuskjtkpg28fegtm@4ax.com...

On Tue, 26 Feb 2013 21:43:13 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:gh9qi8t3alcietnh2r674clj7ne976j2af@4ax.com...
On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...
On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike
Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge
rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the
more
modern electronic/microcontroller type chargers that automatically
switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks"

No you didn't (the senility really is robbing your faculties!) The trick
was
already described by someone else - I merely replied I do that too (and
no -
I can't be bothered drawing pictures because you're too thick to
understand).

---
My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

The bulb trick isn't that great because of its pronounced PTC
characteristic - as the filament voltage decreases the current doesn't
decrease in due proportion.

I did try to dumb it down for you - I do hope I didn't use too many big
words for you!

 

[Ian Field]

"John Fields" <jfields@austininstruments.com> wrote in message
news:mcbqi8t00ur6s6sk6kmuskjtkpg28fegtm@4ax.com...

On Tue, 26 Feb 2013 21:43:13 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:gh9qi8t3alcietnh2r674clj7ne976j2af@4ax.com...
On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...
On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike
Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge
rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the
more
modern electronic/microcontroller type chargers that automatically
switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks"

No you didn't (the senility really is robbing your faculties!) The trick
was
already described by someone else - I merely replied I do that too (and
no -
I can't be bothered drawing pictures because you're too thick to
understand).

---
My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

The bulb trick isn't that great because of its pronounced PTC
characteristic - as the filament voltage decreases the current doesn't
decrease in due proportion.

I did try to dumb it down for you - I do hope I didn't use too many big
words for you!

 

[Ian Field]

"Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote in message
news:CDbXs.151910$uU.43410@newsfe11.iad...

John Fields wrote:

On Tue, 26 Feb 2013 21:43:13 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:gh9qi8t3alcietnh2r674clj7ne976j2af@4ax.com...

On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...

On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...

On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike
Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:


A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge
rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install
a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the
more
modern electronic/microcontroller type chargers that automatically
switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks"

No you didn't (the senility really is robbing your faculties!) The trick
was already described by someone else - I merely replied I do that too
(and no - I can't be bothered drawing pictures because you're too thick
to understand).


---
My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

Unlike you, I've done empirical work which has resulted in published
plots of tungsten lamp filament resistances being functions of
voltages across, and currents through the filament.

I'll email you the plots, if you like.

Your admission to being a copycat hardly qualifies you as an
authority, and certainly explains why you "can't be bothered drawing
pictures" of what you can't envision.
---


You're not only wrong, but stumbling about in a state of advanced
dementia.


---
Wow, with your super-quick response, you must really want me to notice
you and have you suck my dick or have me fuck you up the ass...

Sorry, Charlie...

One of your fetishes?

I'm not so sure "victim" is quite the right word for whoever JF singles out
for a tirade of foul mouthed abuse. He's a sad pathetic figure who's antics
serve only to further demonstrate to onlookers that he's lost the plot.

He's clearly too demented to have any embarassment about being so brave
from behind his keyboard.

 

[Ian Field]

"John Fields" <jfields@austininstruments.com> wrote in message
news:cckri8tludvtpmuq59i88tcnmgqa89h0t9@4ax.com...

On Tue, 26 Feb 2013 18:44:16 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Fields wrote:

Wow, with your super-quick response, you must really want me to notice
you and have you suck my dick or have me fuck you up the ass...

Sorry, Charlie...

One of your fetishes?

Jamie

---
No, just conjecture, but it's interesting how, when the conversation
turns lewd, you people are drawn to it like a moth to a flame.

As you're so keen - you can pick up butt pirates while you're standing on
street corners shouting at the passing traffic.

 

[John Fields]

On Wed, 27 Feb 2013 16:17:04 -0000, "Ian Field"
<gangprobing.alien@ntlworld.com> wrote:

"John Fields" <jfields@austininstruments.com> wrote in message
news:mcbqi8t00ur6s6sk6kmuskjtkpg28fegtm@4ax.com...

My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

The bulb trick isn't that great because of its pronounced PTC
characteristic - as the filament voltage decreases the current doesn't
decrease in due proportion.

---
???

If a you want the current to change linearly with voltage, then a
simple resistor will do the trick so, obviously, you don't understand
how the bulb trick works.
---

I did try to dumb it down for you - I do hope I didn't use too many big
words for you!

---
The words are no problem but it seems, for you, the theory _is_.

Would you like me to explain how the bulb trick works in terms even
you could understand?
--
JF

 

[John Fields]

On Wed, 27 Feb 2013 16:17:04 -0000, "Ian Field"
<gangprobing.alien@ntlworld.com> wrote:

"John Fields" <jfields@austininstruments.com> wrote in message
news:mcbqi8t00ur6s6sk6kmuskjtkpg28fegtm@4ax.com...
On Tue, 26 Feb 2013 21:43:13 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:gh9qi8t3alcietnh2r674clj7ne976j2af@4ax.com...
On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...
On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike
Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge
rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as new.

Can the car charger be used to charge this battery? He can install a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the
more
modern electronic/microcontroller type chargers that automatically
switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks"

No you didn't (the senility really is robbing your faculties!) The trick
was
already described by someone else - I merely replied I do that too (and
no -
I can't be bothered drawing pictures because you're too thick to
understand).

---
My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

The bulb trick isn't that great because of its pronounced PTC
characteristic - as the filament voltage decreases the current doesn't
decrease in due proportion.

I did try to dumb it down for you - I do hope I didn't use too many big
words for you!

---
Posted the same thing twice, huh?

Must be exciting to have some old dude ruffle your feathers to the
point where you don't know whether you're coming or going!

Strange, but that reminds me of an old limerick:

There once was a young man from Kent
whose dick was so long that it bent.
To save him some trouble,
he stuck it in double,
And instead of coming he went.

Certainly a problem you'll never have to contend with.

--
JF

 

[John Fields]

On Wed, 27 Feb 2013 16:22:39 -0000, "Ian Field"
<gangprobing.alien@ntlworld.com> wrote:

I'm not so sure "victim" is quite the right word for whoever JF singles out
for a tirade of foul mouthed abuse. He's a sad pathetic figure who's antics
serve only to further demonstrate to onlookers that he's lost the plot.

---
You pretend to sagacity and literacy and yet use a contraction when
the use of a possessive pronoun is de rigueur?

Tsk, tsk, tsk.
---

He's clearly too demented to have any embarassment about being so brave
from behind his keyboard.

---
It's amazing how semi-macho you faggot pukes get when you've been
cornered.

--
JF

 

[John Fields]

On Wed, 27 Feb 2013 16:25:26 -0000, "Ian Field"
<gangprobing.alien@ntlworld.com> wrote:

"John Fields" <jfields@austininstruments.com> wrote in message
news:cckri8tludvtpmuq59i88tcnmgqa89h0t9@4ax.com...
On Tue, 26 Feb 2013 18:44:16 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:

John Fields wrote:

Wow, with your super-quick response, you must really want me to notice
you and have you suck my dick or have me fuck you up the ass...

Sorry, Charlie...

One of your fetishes?

Jamie

---
No, just conjecture, but it's interesting how, when the conversation
turns lewd, you people are drawn to it like a moth to a flame.

As you're so keen - you can pick up butt pirates while you're standing on
street corners shouting at the passing traffic.

---
It seems to me that you're the captain of that ship, you're flying the
"Jolly Roger" with crossed dicks, and there's never shore leave for
your crew.

Another limerick comes to mind:

Columbus had a cabin boy,
and Ian was the nipper.
He lined his ass
with broken glass
and circumcised the skipper.

--
JF

 

[Ian Field]

"John Fields" <jfields@austininstruments.com> wrote in message
news:20qsi85cd3m4f18uhs253s4tilbeu28gs9@4ax.com...

On Wed, 27 Feb 2013 16:17:04 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:mcbqi8t00ur6s6sk6kmuskjtkpg28fegtm@4ax.com...
On Tue, 26 Feb 2013 21:43:13 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:gh9qi8t3alcietnh2r674clj7ne976j2af@4ax.com...
On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:2dvni890e0mu6d56odaunfsqgu8ssjt7qm@4ax.com...
On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"Jan Panteltje" <pNaonStpealmtje@yahoo.com> wrote in message
news:kgcpgh$ipp$1@news.albasani.net...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike
Cook
mcham@NOTyahoo.com> wrote in
0001HW.CD4F09FA05B8251DB04179BF@news.eternal-september.org>:

A friend has a battery powered Ryobi lawn trimmer ("weed whacker")
which
doesn't work. The 12vdc wall wart puts out only ~ 12.4v.

I charged the lead-acid gel cell using a car charger. The charge
rate
(selectable) was 0.5A. Afterward the trimmer seemed to work as
new.

Can the car charger be used to charge this battery? He can install
a
timer
to
limit charge time if that's something required.

Thanks.

Old trick was to put a car headlight or some other low voltage
bulb
(break
light)
in series as current limiter.
Maybe modern car has only LEDs, dunno,


Its a trick I often use if I have to, but increasingly I turn to the
more
modern electronic/microcontroller type chargers that automatically
switch
to
trickle charge.

---
That's a good thing, since it puts you squarely into the rank of a
"consumer", where you clearly belong, instead of into the ranks of
designers, where you've clearly demonstrated you don't belong.

I could be wrong of course,

Indeed.

---
But, more than likely not, since I requested that you elaborate with
an explanation of your "tricks"

No you didn't (the senility really is robbing your faculties!) The trick
was
already described by someone else - I merely replied I do that too (and
no -
I can't be bothered drawing pictures because you're too thick to
understand).

---
My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

The bulb trick isn't that great because of its pronounced PTC
characteristic - as the filament voltage decreases the current doesn't
decrease in due proportion.

I did try to dumb it down for you - I do hope I didn't use too many big
words for you!

---
Posted the same thing twice, huh?

Actually I was wondering if WLM is yet another flaky POS designed by you -
it sometimes jams up in the outbox, then sends it twice next time the app is
started.

 

[Ian Field]

"John Fields" <jfields@austininstruments.com> wrote in message
news:rtosi81fiefb5ob9i0r6vqo2ki5cdhkgrt@4ax.com...

On Wed, 27 Feb 2013 16:17:04 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields" <jfields@austininstruments.com> wrote in message
news:mcbqi8t00ur6s6sk6kmuskjtkpg28fegtm@4ax.com...

My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

The bulb trick isn't that great because of its pronounced PTC
characteristic - as the filament voltage decreases the current doesn't
decrease in due proportion.

---
???

If a you want the current to change linearly with voltage, then a
simple resistor will do the trick so, obviously, you don't understand
how the bulb trick works.
---

I did try to dumb it down for you - I do hope I didn't use too many big
words for you!

---
The words are no problem but it seems, for you, the theory _is_.

Would you like me to explain how the bulb trick works in terms even
you could understand?

You're so scattered I wouldn't trust anything from you even if it "looked"
right!

All that weed you keep smoking has given you dopers crott.

 

[Jamie]

John Fields wrote:

On Tue, 26 Feb 2013 18:44:16 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:


John Fields wrote:


Wow, with your super-quick response, you must really want me to notice
you and have you suck my dick or have me fuck you up the ass...

Sorry, Charlie...


One of your fetishes?

Jamie


---
No, just conjecture, but it's interesting how, when the conversation
turns lewd, you people are drawn to it like a moth to a flame.

Well, a lot of us love to watch a circus side show..

Jamie

 

[Ian Field]

"Jamie" <jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote in message
news:vOvXs.72571$lC2.58526@newsfe25.iad...

John Fields wrote:
On Tue, 26 Feb 2013 18:44:16 -0500, Jamie
jamie_ka1lpa_not_valid_after_ka1lpa_@charter.net> wrote:


John Fields wrote:


Wow, with your super-quick response, you must really want me to notice
you and have you suck my dick or have me fuck you up the ass...

Sorry, Charlie...


One of your fetishes?

Jamie


---
No, just conjecture, but it's interesting how, when the conversation
turns lewd, you people are drawn to it like a moth to a flame.

Well, a lot of us love to watch a circus side show..

And it was JF who opened the door with his reference to his favourite
pastime of cocksucking.

 

[mike]

On 2/27/2013 12:09 PM, John Fields wrote:

On Wed, 27 Feb 2013 16:17:04 -0000, "Ian Field"
gangprobing.alien@ntlworld.com> wrote:



"John Fields"<jfields@austininstruments.com> wrote in message
news:mcbqi8t00ur6s6sk6kmuskjtkpg28fegtm@4ax.com...

My request was about having you describe the dynamics of a
light-bulb-in-series-with-a-battery current limiter which, no matter
how loudly or how long you squeal excuses about why you can't, you
can't, of course.

The bulb trick isn't that great because of its pronounced PTC
characteristic - as the filament voltage decreases the current doesn't
decrease in due proportion.

---
???

If a you want the current to change linearly with voltage, then a
simple resistor will do the trick so, obviously, you don't understand
how the bulb trick works.
---

I did try to dumb it down for you - I do hope I didn't use too many big
words for you!

---
The words are no problem but it seems, for you, the theory _is_.

Would you like me to explain how the bulb trick works in terms even
you could understand?

I understand how the light bulb works, but I'm very interested in
hearing YOUR explanation.