Newsgroup: it.comp.macintosh
Titolo: Batteria Powerbook100

Salve a tutti,
Vorrei sapere se qualcuno di voi conosce i dati tecnici di tale
batteria(amperaggio, voltaggio), siccome vorrei autocostruirmi un pacchetto
di batterie utilizzando delle stilo ricaricabili. Infatti la batteria del
mio PwB è introvabile... e la mia ormai accende a malapena il portatile.
Ringrazio tutti coloro che mi risponderanno, accetto anche consigli su idee
diverse per ovviare il mio problema.
Ciao

 mio PwB è introvabile... e la mia ormai accende a malapena il portatile.
introvabile non e'
http://www.canada.cnet.com/shopping/resellers/0-11812-311-106194-0.html
http://www.drbott.com/pop-up/5701-100N.html
il prob e' che una volta trovata e pagata, IMHO l'unica funzione chiara
della batteria e' di aumentare il peso del PB.
ciao
toni
-- 
**ANTISPAM! remove <X> /rimuovi <X> from <@dplanet.chX>
**
http://members.xoom.com/toni_web/
**PGP ID: 0x68A08F3F
**Your current memory size is 501K; I suggest using at least 453K*

 
(Remove the hyphen! Spambusters at work!)
listen to aaria (two and a Mac): 
http://www.mp3.com/aaria
*** What's all this talk about computers crashing 
    in the year 2000? My PC has been crashing regularly
    since 1996!

 diverse per ovviare il mio problema.
Ho trovato una procedura che POTREBBE rigenerarla, ma non ho ancora
avuto il tempo di provarla. La posto, magari qualcuno può provarci e
farlo sapere nel newsgrooup:
3. Rejeuvenating Dead Batteries
contributed by Dave Beane
Shortly before I got my PB100, I had a 1 KW UPS that was not working due
to its (lead-acid) batteries being dead and not holding a charge. I had
had some dealings with a battery specialist, however, who told me that
lead-acid batteries can frequently (about 85% of the time, he said) be
"rejuvenated" by passing a trickle charge of about ten milliamps through
them for several days (he said "about four or five days".) The problem,
as he explained it to me, is that sulphates build up on the lead plates,
reducing the efficiency with which the battery operates. This can be
remedied, he told me, by trickle-charging them as described above, which
breaks up the sulphates on the plates, returning the battery to its
original condition. Hearing this good news, I took him the batteries
from my UPS, and he trickle-charged them in the above fashion for four
days. At that point they once again held a full charge, and when
installed in my UPS, functioned normally.
Then I got my PB100. The battery it came with was nearly dead, and I
convinced the dealer who sold it to me to replace it with a new battery,
which lasted about a year before it would finally not hold my PB100 up
for more than a few seconds. A phone call to the battery specialist
refreshed my understanding of the reconditioning process, and I set out
to try it for myself on my 100's dead battery. What I eventually came up
with was an AC adapter for a calculator (I think) which had the proper
voltage (it is rated 6 VDC at 600 mA), and which I was able to connect
to my PB100 battery using a spare connector and some big alligator
clips. When this AC adapter was connected to my PB100 battery, it
managed to push a current of 12 milliamps through it. I connected it,
and let it sit for four days (I was going into DT's without my
PowerBook.)
IT WORKED. After four days, I put the battery back into my PB100, and
saw that it held it up just as it did when the battery was brand new.
(One hour while using the hard drive constantly, or four hours using the
RAM disk as my startup drive and holding my application and documents.)
I was ecstatic.
Another year went by, and the battery again needed reconditioning. I
again hooked it up and let it set. This time, after four days, the
battery was not completely rejuvenated. In fact, as I now write this, it
only holds my PB100 up for a few minutes (which is better than it was).
I have yet to retry the process, since it requires that I leave my PB
unused for a week or so (very hard to do.) If there is enough interest
in this group, I will try it again, and report the results. I know it
worked once, and it may just take longer with an older battery.
This is not the end of this tale, at least not yet. In the interim
following my first success I tried to recondition five very old PB100
batteries for someone who had several PB100's, and failed miserably.
These batteries were several years old, and appeared to be shorted
internally (though I don't know by what process). They would not respond
in any fashion. It is because of these failures that I have been
reluctant to share this with anyone, as I did not want to get their
hopes up. For those of you who have very old batteries, I don't know
what to tell you. They might not be hopeless, and I imagine that each
circumstance will be unique. For the person who has a battery at the end
of it's first lifetime, or that still lasts a short time before becoming
exhausted, this process might help you squeeze some more life out of it.
If you want to try it for yourself, do as I did. Visit garage sales, and
buy old AC adapters that are rated at roughly 6 volts DC (7 volts might
work as well, although it will probably pump more current through your
battery, which doesn't work as well.) Obtain a cheap digital multimeter,
and measure how much current flows when the adapter is hooked up to the
battery. (For those without a background in electronics, you will need
to determine which of the AC adapter's wires is positive and which is
negative, by touching each of the multimeters leads to one of the AC
adapter's wires while the AC adapter is plugged in. When the multimeter
reads a negative number, the red multimeter lead is touching the
negative wire from the AC adapter. Once you have determined this, hook
the negative lead from the AC adapter to the negative (-) terminal of
the battery, then hook the black multimeter lead to the positive
terminal. With the multimeter turned on and set to DC current and 20 mA,
hook the red multimeter lead to the positive terminal of the AC adapter.
When you are in this configuration (with the AC adapter plugged into the
wall) you should have a positive two digit number on the multimeter's
display. This is the number of milliamps flowing through the battery
(ideally, it should be about 10. Much more than this will simply heat
the battery without affecting it, just like the PB100 adapter does).
When you are ready to leave the battery for several days, hook the
negative wire from the AC adapter to the negative (-) battery terminal,
and the positive wire to the positive (+) battery terminal. This is the
normal charging configuration.  
Bye
Cesare

 
(Remove the hyphen! Spambusters at work!)
listen to aaria (two and a Mac): 
http://www.mp3.com/aaria
*** Read the specs before you buy.  Ask around.  Use your brain. 
    There's no such thing as a perfect vendor or manufacturer.
    There is such a thing as an intelligent consumer.       ***

 piu' seri, ma volendo ci metti 10 stilo. Ci sto lavorando :-)
Ed il fatto che gli accumulatori originali del PB 100 fossero al piobo
non condiziona ilprogetto ti sostituzione degli accumulatori?
Vabbč, leho detto e forse č una cretinata.
pazienza.
****************
* Severino Bigi*
****************

 
(Remove the hyphen! Spambusters at work!)
listen to aaria (two and a Mac): 
http://www.mp3.com/aaria
*** Depression is merely anger without enthusiasm. ***

 cosa succede.
La batteria di un PB100 è al piombo.
E il circuito di ricarica nel PB è progettato per ricaricare batterie al
piombo e non NiCad o NiMh.
ClaZ

 
(Remove the hyphen! Spambusters at work!)
listen to aaria (two and a Mac): 
http://www.mp3.com/aaria
Attenzione: questo messaggio
   stimola la dieresi,
     e fa fare tanta
   ^ ^  _ _  ^ ^  _ _
   ° °  ° °  ° °  ° °
    -    -    -    - 
  (audio file follows)

 o cambiano i tempi / le correnti?
Cambia la metodologia...
Una batteria NiCad o NiMh si ricaricano a "corrente costante"
Una batteria al piombo si ricarica a "Tensione costante"...
CIao
ClaZ

 
(Remove the hyphen! Spambusters at work!)
listen to aaria (two and a Mac): 
http://www.mp3.com/aaria
***   The idea that Bill Gates has appeared
like a knight in shining armour to lead all 
customers out of a mire of technological chaos
neatly ignores the fact that it was he who, by
peddling second-rate technology, led them 
into it in the first place." 
                   - Douglas Adams, on Windows '95.