[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
(OT) Is this true ; or make any sense??
--- L F <rocco16v@netzero.net> a écrit : > a bulb is
not a 'charge', it's a load.
Correct. My mistake. (charge is french for load).
> Whadda' ya' mean, discharge down to one volt? They
> only have 1.25 fully
> charged! You'd be doing exactly what you don't want
> to do!!!
> drain 'em DEAD!
> :)
Nope. Drain em down to 1.0V. Then recharge.
>
> Larry
> (maybe Canadian ni-cads are different???)
>
>
> > NEVER put a charge (a bulb) across NiCads untill
> the
> > batteries are fully drained. You will damage the
> > batteries, guaranteed.
> >
> > You have to discharge NiCads down to 1.0 Volts per
> > cell. NEVER below. This is know as the "knee" in a
> > graph.
> >
> > Say that you have a 7.25 Volt battery. That would
> be 6
> > times 1.25 Volt cells (fully charged). Put a
> charge -
> > a light bulb is a good compromise - untill you
> read
> > 6.0 Volts across the battery With the bulb still
> > connected. Then disconnect the bulb.
> >
> > Recharge at 1/10th of the rated Amp/hours for 16
> > hours.
> >
> > Repeat three times.
> >
> > Your battery should be reasonnably recycled. If
> the
> > battery is toasted, then it is toasted, and buy a
> new
> > one.
> >
> > Static voltage (with no charge) of a NiCad battery
> > should always be 1.0 Volt per cell. So in the
> above
> > exemple, your 7.25 Volt battery should always read
> > ABOVE 6.0 Volts ( 6 times 1.0 Volt). If it reads
> lower
> > than that, you have one or more damaged cell. Buy
> a
> > new one.
> >
> > Cheers.
> >
> > Marc
> > '83 Scirocco
> > '88 Scirocco slegato
> >
> > --- Kenneth & Georgianna Robinson
> > <krobins2@twcny.rr.com> a écrit : > Thanks for
> your
> > reply!! I guess I'll stick with the
> > > light bulb draw experiment for now;closely
> > > monitored.All I have now is a small l.e.d.
> bulb;Ill
> > > get a bigger one tomorrow.Ken R.
> > > ----- Original Message -----
> > > From: broke
> > > To: Allyn ; Kenneth & Georgianna Robinson ;
> > > Scirocco List
> > > Sent: Tuesday, October 08, 2002 7:26 AM
> > > Subject: Re: (OT) Is this true ; or make any
> > > sense??
> > >
> > >
> > > Be careful leaving the battery on the lights
> after
> > > the lights have stopped burning.
> > > Like Al said, this is an old RC trick, used to
> > > revive old racing packs.
> > > If you leave them on the lights, you risk
> > > reversing the voltage of the cell, or one of the
> > > cells that make up the pack.
> > > The memory are really cystals inside the cell
> that
> > > is keeping it from fully draining or charging.
> > > Cystals are built up a number of ways, like
> not
> > > fully discharging, not fully charging, etc.
> > > NiCad batteries are bad for it, and the MH
> > > batteries were supposed to be less sensitive,
> but
> > > they'll still do it too.
> > > Once cell voltage reversal has occured, you
> can't
> > > change it, and that cell is shot.
> > > We used to run 12V auto bulbs in series to
> produce
> > > a very high amp draw. Once the lights went out,
> you
> > > HAD to pull the pack. After a bit, items like a
> > > Battery Bug or a pack staablizer were
> introduced,
> > > and this replaced the light bulbs set-up, and
> with
> > > built in circuitry, it would cease the draning
> once
> > > the pack discharged, to prevent the cell
> reversal.
> > > Then you would either slow charge it fully, or
> use
> > > a higher end peak charger, which monitors the
> cell
> > > voltage and shuts off charging when peak voltage
> > > begins to drop.
> > > Do a search on Nickel Cadmiuim batteries or RC
> > > battery care, and you'll find some more info on
> the
> > > subject.
> > > Depending on the care, NiCads have about 1000
> > > charges in them before they crap out.
> > > I ran electrics for 10 years, before finally
> > > switching over to nitro-methane. Since I got
> into
> > > the VWs though, the poor RCs have just sat and
> > > collected dust.
> > >
> > > Broke
> > > ----- Original Message -----
> > > From: Allyn
> > > To: Kenneth & Georgianna Robinson ; Scirocco
> > > List
> > > Sent: Monday, October 07, 2002 10:58 PM
> > > Subject: Re: (OT) Is this true ; or make any
> > > sense??
> > >
> > >
> > > memory makes the battery produce a sort
> of
> > > internal resistance. put it in the camcorder and
> it
> > > seems dead (just like a faulty ground cable on
> our
> > > roccos). put it in the charger, and it think its
> > > done in minutes (again, due to this resistance,
> > > dropping voltage, ending up with the outward
> > > appearance of a fully charged battery (as far
> the
> > > the charger can tell, from the outside)).
> > > you need to fully discharge the battery
> > > (light bulb) for abt 6 hours (even if the bulb
> is
> > > hardly lit), then fully charge it (slowly, not
> the
> > > quick charger, if its an 8 hr slow charger,
> leave it
> > > for 24 hrs so the cells equalize), then do the
> light
> > > bulb thing again (abt 3 hrs past where it gets
> dim),
> > > and charge it one last time (slow, again, 24
> hrs).
> > > this will attempt to get rid of the memory in
> nicd
> > > batteries.
> > > if the batteries are very old, it may
> just
> > > be their time to go, especially if they are
> nicd.
> > > the old light bulb trick comes from the
> r/c
> > > car days, people would fully discharge their
> packs
> > > with the same light bulb type things after each
> run.
> > > HTH
> > > Al
> > >
> > > ----- Original Message -----
> > > From: Kenneth & Georgianna Robinson
> > > To: Scirocco List
> > > Sent: Monday, October 07, 2002 9:09 PM
> > > Subject: (OT) Is this true ; or make any
> > > sense??
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: Kenneth & Georgianna Robinson
> > >
> > > Subject: (OT) Is this true ; or make any
> > > sense??
> > >
> > >
> > > Someone told me awhile ago,that if your
> > > camcorder battery won't take a charge
> > > anymore(develops a memory--???); that you need
> to
> > > put some kind of light with wires across the
> > > contact/charging terminals of the batt.If the
> light
> > > is connected right,the light will light up,and
> when
>
=== message truncated ===
__________________________________________________________
Lèche-vitrine ou lèche-écran ?
magasinage.yahoo.ca