[TechAssist] Re: zapping batterys
- From: "J Silverman" <greentron@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 10 Sep 2003 13:37:27 -0400
Lithium cells are nominal 3 volts, so those were single cell batteries.
Interesting that zapping fixed some sort of problem.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
864 232 3889
Fax 271 2080
mailto:greentron@xxxxxxx
----- Original Message -----
From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx>
To: "J Silverman" <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, September 10, 2003 4:05 AM
Subject: [TechAssist] Re: zapping batterys
> The lithium batteries that I have zapped all were a volt or so low
> when charged (usually a shorted cell). So I zapped them with 12V
> in series with a 4 Ohm resistor. Wasn't sure how much current to
> use (just figured that 3A would be enough).
>
> These were 3.6V batteries used in Casio PocketPCs. I applied the
> voltage for a split second (several times were necessary in some
> cases to get the voltage to come up). If you have an open cell I
> don't know if zapping would help.
>
>
>
> --
> Best regards,
>
> Bil Green
> 2001 TV VCR
> Mammoth Lakes, CA 93546
> 760-934-2001 mailto:tv.vcrrepair@xxxxxxxxxxx
>
> Tuesday, September 9, 2003, 10:09:39 AM, you wrote:
>
> JS> Tell us more about zapping the lithium batteries. We have quite a few
> JS> camcorder lithium batteries that seem to be open circuit. Have
hesitated to
> JS> experiment with them because of all the warnings on them about fire
and
> JS> explosion.
> JS> Jerry Silverman
> JS> Greentron Inc
> JS> 4 Newland Ave
> JS> Greenville SC 29609
> JS> 864 232 3889
> JS> Fax 271 2080
> JS> mailto:greentron@xxxxxxx
> JS> ----- Original Message -----
> JS> From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx>
> JS> To: "Ted chilinski" <techassist@xxxxxxxxxxxxx>
> JS> Sent: Tuesday, September 09, 2003 3:28 AM
> JS> Subject: [TechAssist] Re: zapping batterys
>
>
> >> It IS OK to zap the whole battery to fix one cell. Just be very
> >> careful. You only need to apply the voltage for a fraction of
> >> a second, so there isn't enough time to heat things up. Zapping
> >> the whole thing works for me. Besides, whata ya gonna do, take
> >> a molded battery all apart?
> >>
> >> The cadmium in ni-cad batteries is very toxic (much more than
> >> lead). If the battery were to somehow explode and some particles
> >> end up in your mouth that wouldn't be good. I place something on
> >> top of the battery, just in case.
> >>
> >> The small lithium battery in my Casio PocketPC cost $50. It sure
> >> was nice to fix it when it failed to take a charge.
> >>
> >>
> >>
> >> --
> >> Best regards,
> >>
> >> Bil Green
> >> 2001 TV VCR
> >> Mammoth Lakes, CA 93546
> >> 760-934-2001 mailto:tv.vcrrepair@xxxxxxxxxxx
> >>
> >> Monday, September 8, 2003, 7:10:20 PM, you wrote:
> >>
> >> Tc> hi fellows :i've been zapping batterys for years to answer someone
> JS> questions first you have to zap individul batteries for instance a
telephone
> JS> usually has 3 batterys check each one should be
> >> Tc> 1.5volts which one reads less than 1.5volts is bad thats the one
you
> JS> gaff with 12volts don't apply the 12volts across the 3 batteries this
means
> JS> when you have more than 1 battery you have to
> >> Tc> measure each battery and find the bad ones for instance a makita
drill
> JS> with 9.6 volts the plastic case has to be pried apart measure each one
to
> JS> find the bad one or more.
> >> Tc> GOOD LUCK HAVE FUN
> >> Tc> TED CHILINSKI
> >> Tc>
> JS>
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