Looking for a UPS Design That Doesn't Overheat Batteries

[no one that you know]

**** you roy my boy toy top posted and your NAME IN SMALL
Get with the times you dirty old man you dont own usenet anymore and we
will ost any way we like

 

[Don Klipstein]

He claims to be an engineer too.

Your only claim to fame is that you are a top posting Usenet retard.

http://en.wikipedia.org/wiki/Top-posting

Does Wiki say anything about the word "retard"?

Who uses the word "retard"?

That word is obviously a synonym for "mentally retarded person" and well
enough known to be used mainly by name-callers of junior-highschool age to
a bit younger.

Given an accusation that Roy L. Fuchs is someone who previously offended
under a different name quite a few years ago (and looking good mainly
when his opponent was the infratroll Rod Speed), I wonder about the
chronological age of this "Roy L. Fuchs" while his emotional age may
be better determined to be in or near the early-stage-puberty range.

- Don Klipstein ([email protected])

 

[Don Klipstein]

I don't even believe that you have one at this point.

Why? Because he would debate someone at your low level - with you
giving some appearance to be someone who in the past did so better when
the opponent was the uberinfratroll who got his own FAQ?

- Don Klipstein ([email protected])

 

[Peter Dettmann]

What a wuss. Get over it, boy.

I can handle it, but point out the ongoing bad manners. Your comments
seem not to be relevant nor assist in the matter.

Peter Dettmann

 

[no one that you know]

I like it on top so stuff it you dont own usenet ....us newbies do now.........go
walk your dog or something and think about that!

 

[Don Klipstein]

You're an idiot. Batteries, when delivering energy, do not exhibit
the same heat as that which they deliver the energy to (the load).

Nick was advocating a couple seconds of high current discharge with
the battery's load being the resistance in the battery - 100% efficient at
heating the battery unless you argue endothermic discharge chemical
processes.

And no, a starter motor on a car does NOT work better cold.

Yes it does - winding resistance is less. The difference is small when
the battery internal resistance is large compared to the starter winding
resistance, but it is not zero nor negative!

We are not at absolute zero here, and anything up in the temperature
range we ARE at will NOT make one IOTA of difference to a DC fed high
torque motor. In fact, the cold starter is likely to be more
reluctant to turn, not less.

Can you supply data of bearing lubricants making the task more difficult
to an extent outweighing the winding resistance decreasing as temperature
decreases? I suspect NOT! Not only because of shortage of measurements,
but also from winding resistance likely allowing 10's of watts more power
input when 10 degrees colder while any lubricant viscosity loss increase
is probabably about or over an order of magnitude less!

Do you always make shit up?

- Don Klipstein ([email protected])

 

[repatch]

I hope you would have found a better example...

In my personal experience? No. I have on the other hand HAD a fire under
the hood due to the grease/residue on the engine catching. Fortunately
there wasn't much and it burned itself out very quickly, but had there
been more it would have been a very bad day for me.

It doesn't matter if my example isn't "good enough", big sparks under the
hood of a car are NEVER a good idea. The possibility of a small gasoline
leak would be reason enough to never attempt such a thing.

Heck, consider that by doing this the pair of pliers weld themselves onto
the connections, a car battery pumping hundreds if not thousands of amps
through a pair of pliers uncontrolled would cause me to run.

 

[repatch]

Trus me when it's minus forty it takes more than a few seconds to cook a
starter.........but thank you for your concern

I'm not exactly disagreeing with you (cranking for more then 10 seconds
would concern me if you didn't give the starter a break between tries),
but the op was talking about a STALLED starter. Whether or not this is
good for the starter I don't know, what I do know is it's pretty pointless
since a stalled starter has no chance of starting the engine, and you're
simply wasting energy by doing so.

TTYL

 

[Don Klipstein]

Yet your retarded ass wants to have us believe that placing a short
on a battery in the cold is going to have a benefit, and is safe?

You are beyond left field, dude.

How about if the short is removed before it detonates the battery, it
warms it enough to lower its internal resistance enough to make the
difference of the car starting?
Oh, especially with temperatures so low and battery so discharged that
previous arguments against doing this were on the basis of
ineffectiveness?

I would take a chance at even so much as risking blowing up my car
battery rather than being late for work for lack of doing so. (Although I
think better still the smart stuntman rides a bicycle to work, especially
if so tolerant to cold as to complain about heat on an average August day
in San Francisco and sweat while cycling through a snowstorm in a short
sleeve T-shirt and nothing else worn above the waist except for a helmet!)

- Don Klipstein ([email protected])

 

[Don Klipstein]

If you had been showered with full strength battery acid that
was not washed off for 1 minute, I assure you that it *would*
have burned your skin and damaged your cloths, to put it mildly.
(The clothes, incidentally, might not show a great deal of
damage immediately... but the next time they are run through the
washing machine they come out with more holes than not!)

Go to emergency shower within a minute of being sprayed by half sulfuric
half water... Probably more like 80% water 20% sulfuric should the
battery require desperation heating means...

From the description you give it would appear that the cell
which exploded was nearly discharged, and thus you were sprayed
with a mostly water solution.

Probably expectable in the unlikely eventy it happens...

Heck, I would take a few seconds to take a slight risk of needing to
emergency shower as reason for being late for work rather than not do
everything to get my car to start! (Should I need to drive my car rather
than pedal my bike to work!)

Damned lucky! Keep in mind that
even in relatively dilute form, if you had inhaled any
significant amount of it, the results would have been extremely
uncomfortable.

How likely am I to inhale the output of a car battery explosion when I
am bracing myself for so much as minor to maybe negligible risk of one?

Info relevant to here is lacking, although it does give fair chance that
this could be someone other than the one of junior-highschool mentality
that looked good mainly when his opponent was the infratroll sufficiently
famous to get his own FAQ!

I hope you disclaim to be either of these offenders!

- Don Klipstein ([email protected])

 

[Don Klipstein]

No, it does not. A SUPERCOOLED copper wire MAY be less resistive,
but for ALL intents and purposes, we get the same wire in arctic
conditions that we get in a desert swill. As far as it taking more
current, it will heat up to the fuse point at MAYBE a slightly higher
current due to a lower starting ambient, but the reason isn't because
it conducts better.

Ever hear of copper's resistance being fairly close to proportional to
absolute temperature?

- Don Klipstein ([email protected])

 

[Don Klipstein]

Yet you forget that the WIRE itself, not the ambient room temp has
to be maintained at said temperature, and THAT is the part that does
NOT happen.

You're an idiot to believe that. A DRY cold bearing MAY have
greater clearances, but slop can cause friction problems elsewhere.
If it is NOT a dry bearing, the grease used in it will most assuredly
be less mobile when cold.


So what? The bearing race would shrink as well.


A ball bearing is hardened steel, and it will NOT shrink
significantly in this scenario... at all.


Grease is a petroleum distillate in most cases as well. even
synthetics thicken when cold.

Try again.

Lubricant requiring a watt or two or maybe a fraction of a watt more
mechanical energy to overcome thickening thereof in a motor whose windings
ahave conductivity increased sufficiently to let in 10's of watts?

- Don Klipstein ([email protected])

 

[Don Klipstein]

There are reasons that steel is used in the making of a ball
bearing, dumbass. Low thermal expansion rates is only one reason.

What does your argument have to do with the hardening point tyhat you
were supposedly responding to?

- Don Klipstein ([email protected])

 

[Don Klipstein]

It also has ENOUGH rise internally such that all these claims of it
being a better conductor when cold get nullified.

Get a clue.

The problem of resistance is less when the ambient temperature is
colder.

The problem of wire temperature increase from heat dissipated in the
wire is less when colder temperature makes its resistance lower.

Either find another point to argue on or support contentions that you
are the "dungmanure" complained about in the past.

- Don Klipstein ([email protected])

 

[Don Klipstein]

In my personal experience? No. I have on the other hand HAD a fire under
the hood due to the grease/residue on the engine catching. Fortunately
there wasn't much and it burned itself out very quickly, but had there
been more it would have been a very bad day for me.

It doesn't matter if my example isn't "good enough", big sparks under the
hood of a car are NEVER a good idea. The possibility of a small gasoline
leak would be reason enough to never attempt such a thing.

Heck, consider that by doing this the pair of pliers weld themselves onto
the connections, a car battery pumping hundreds if not thousands of amps
through a pair of pliers uncontrolled would cause me to run.

And with that much current available, I would expect a car to start
before its driver resorts to the desperation tactics under debate here!

- Don Klipstein ([email protected])

 

[Floyd L. Davidson]

Trus me when it's minus forty it takes more than a few seconds to cook a
starter.........but thank you for your concern

Wanna bet?

 

[Roy L. Fuchs]

Trus me when it's minus forty it takes more than a few seconds to cook a
starter.........but thank you for your concern

Look, you top posting Usenet RETARD!

Within a few hundred milliseconds of applying current, the wires
involved in your scenario would not be caring ANYTHING at all about
the outside temperature.

But thanks for trying to squirm away from reality.

It is a well established FACT that non rotating starter motors under
power can catastrophically fry rather quickly.

Put THAT in your keyhole and crank it, you top posting dipshit.

 

[Roy L. Fuchs]

Does Wiki say anything about the word "retard"?

Who uses the word "retard"?

That word is obviously a synonym for "mentally retarded person" and well
enough known to be used mainly by name-callers of junior-highschool age to
a bit younger.

Given an accusation that Roy L. Fuchs is someone who previously offended
under a different name quite a few years ago (and looking good mainly
when his opponent was the infratroll Rod Speed), I wonder about the
chronological age of this "Roy L. Fuchs" while his emotional age may
be better determined to be in or near the early-stage-puberty range.

- Don Klipstein ([email protected])

You're an idiot, Kliptard.

 

[Roy L. Fuchs]

I can handle it, but point out the ongoing bad manners. Your comments
seem not to be relevant nor assist in the matter.

Peter Dettmann

Again... GET OVER IT, you STUPID FUCKTARD!

 

[Roy L. Fuchs]

Nick was advocating a couple seconds of high current discharge with
the battery's load being the resistance in the battery - 100% efficient at
heating the battery unless you argue endothermic discharge chemical
processes.

More like 100% efficient at depleting the battery, dipshit.