On Tue, 26 Feb 2013 21:43:13 -0000, "Ian Field"
wrote:



"John Fields" wrote in message
.. .
On Tue, 26 Feb 2013 16:46:14 -0000, "Ian Field"
wrote:



"John Fields" wrote in message
...
On Mon, 25 Feb 2013 22:36:52 -0000, "Ian Field"
wrote:



"Jan Panteltje" wrote in message
...
On a sunny day (Sun, 24 Feb 2013 00:06:18 -0800) it happened Mike Cook
wrote in
:

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 **** you up the ass...

Sorry, Charlie...

--
JF