[NSRCA-discussion] Dodged a Bullet Today!!!!

Wed Mar 22 08:24:32 AKST 2006

I ordered the FMA CellPro charger.. . it charges the battery thru the
balancing plug; each cell individually.  I was always suspicious of chargers
that charged a pack of LiPo cells in series and had no (dummy-proof) way of
counting the cells.
.
.
.

On 3/22/06, Grow Pattern <pattern4u at comcast.net> wrote:
>
>  This is all hindsight.
>
> It's an emotive joke to say that I and everyone else should have read
> every post on a forum somewhere. My responsibility is to read and use the
> manual. The people selling the products did not warn me in their literature
> about topping-up a fully charged battery. (12 days since its last charge.)
>
> Just you wait, your complacency takes a huge nose five when the flames
> appear. You think you are doing it right and that other folks must be
> screwing-up then BOOM! it's you!
>
> I did what Jim says should be done. It said 3-cell is was then turned up
> to 2 Amps. What I did not do was wait until stage-2 actually had kicked in.
> Even then I don't know if I would have seen anything wrong. If they have to
> be charged as individual cells then take the other stuff off the market NOW!
>
> This is like exploding gas tanks all over again....
>
> Eric. (Admittedly very spooked right now by this experience)
>
> ----- Original Message -----
> *From:* Jim Woodward <jim.woodward at schroth.com>
> *To:* 'NSRCA Mailing List' <nsrca-discussion at lists.nsrca.org>
> *Sent:* Wednesday, March 22, 2006 10:02 AM
> *Subject:* Re: [NSRCA-discussion] Dodged a Bullet Today!!!!
>
>
>
> I thought that with the Astro 109, if you were unsure of the charge state
> of the battery, you should begin the charge with the little nob turned down
> all the way to zero??
>
> Jim w.
>
>
>
>
>  ------------------------------
>
> *From:* nsrca-discussion-bounces at lists.nsrca.org [mailto:
> nsrca-discussion-bounces at lists.nsrca.org] *On Behalf Of *
> DaveL322 at comcast.net
> *Sent:* Wednesday, March 22, 2006 9:53 AM
> *To:* NSRCA Mailing List
> *Subject:* Re: [NSRCA-discussion] Dodged a Bullet Today!!!!
>
>
>
> For some people, sticking with glow might be the best solution.
>
>
>
> Some have noted specific "No No's" with regard to charging lipos - there
> are a number of universally agreed "Rules" that would have prevented this
> situation (if followed), and there are a number of
> theories/approaches/practices for safe charging, care, and handling of lipos
> that also would have prevented this situation (if followed).  And in
> particular, there are rules/practices specific to the 109 charger.  All of
> these things are discussed in detail in many forums on RCU and RCGroups.
> From everything I've read, it is extremely rare to see a lipo flame when
> good practices are being followed - but - the potential always exists, no
> matter how small (keeping in mind potential hazards/situations are
> everywhere in our daily lives).
>
>
>
> Dave
>
>
>
> -------------- Original message --------------
> From: "Glenn Hatfield" <randy10926 at COMTEKMAIL.COM>
>
> > I would never hear anything from the back of the pea-cup truck. Maybe
> the 1st
> > rule is stick with glow.
> > Randy
> >
> > --- seefo at san.rr.com wrote:
> >
> > From: "Doug Cronkhite"
> > To: "'NSRCA Mailing List'"
> > Subject: Re: [NSRCA-discussion] Dodged a Bullet Today!!!!
> > Date: Tue, 21 Mar 2006 21:08:56 -0800
> >
> > Actually..
> >
> >
> >
> > 1st rule of Li-po charging is.. Never charge unattended.
> >
> >
> >
> > 2nd rule is never charge in your car.
> >
> >
> >
> > Eric got really lucky and I suspect won't be doing either 1 or 2 again.
> >
> >
> >
> > -Doug
> >
> > !
> >
> >
> >
> > _____
> >
> > From: nsrca-discussion-bounces at lists.nsrca.org
> > [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Dean
> Pappas
> > Sent: Tuesday, March 21, 2006 8:51 PM
> > To: NSRCA Mailing List
> > Subject: Re: [NSRCA-discussion] Dodged a Bullet Today!!!!
> >
> >
> >
> > Hey Evil,
> >
> > I'd rather be lucky than good: any day!
> >
> > And that's why you use a charger that looks at each tap, before
> charging, in
> > order to determine the number of cells. The same problem exists when
> > dis-charging packs. That's how I trashed one cell in one of my 5Ses.
> >
> > Dean
> >
> > -----Original Message-----
> > From: nsrca-discussion-bounces at lists.nsrca.org on behalf of Grow Pattern
>
> > Sent: Tue 3/21/2006 6:04 PM
> > To: NSRCA Mailing List
> > Cc:
> > Subject: [NSRCA-discussion] Dodged a Bullet Today!!!! >
> >
> > http://www.rcuniverse.com/forum/m_4056141/anchors_4064428/mpage_1/key_/ancho
> > r/tm.htm#4064428See picture on RCU.I had a bit of a set back today with
> my
> > winter fun 40 sized glow to electricconversion. I had wanted to try the
> > Thunderpower 4200 instead of the Tanic3600. I set off to the field with
> a
> > borrowed Thunderpower 4200 mAh pack. Iset the Astroflight 109 to 2 Amps.
> It
> > ent to stage 1 and was calibrating toa 3 cell pack and was well on its
> way
> > to charging the pack, or at least so Ithought . I have done this
> > topping-it-up many times before. I set it on a 2Amp charge rate.I never
> made
> > it to the field. I heard a light "Phuttt!" about ten minutesinto the
> > journey. I stopped the van and ran back to the back doors. Thebattery
> was
> > bloated and looking bad. I grabbed the Deans connectors andunplugged it.
>
> > Dangling it by the lead and as far away from my face aspossible I
> lowered it
> > to the curbside.I then personally backed ! up and was about to move my
> van
> > forward a bit . (Ihad just put 3!
> > 5 gallons in it!). Seemed like a good idea to get clear. Neverhad the
> > chance. The pack blew up in a ball of flame about a cubic yard insize
> and
> > proceeded to burn fiercely. I had grabbed the fire extinguisher
> butdecided
> > not to use it.The local police joined me for a while and seemed more
> > interested in theplanes in the back of the van than the charred remains.
> I
> > scraped all of thebits up to keep the country side pretty. Estimated
> that
> > the grass would growback soon, and went home.Fortunately I was able to
> get
> > it out of the van before it blew up intoflames etc.Long and the short of
> it
> > is. "Do not charge a fully charged battery with anautomatic
> charger"Dodged a
> > BIG bullet today.....Regards,Eric.P.S. If 3 fully charged cells = 12 V
> plus,
> > and 4 discharged cells = 12 Vplus, then how does the charger know which
> ! is
> > which?
> > __________________________________________ _____
> > NSRCA-discussion mailing list
> > NSRCA-discussion at lists.nsrca.org
> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
> >
> > _______________________________________________
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> >
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>
>  ------------------------------
>
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--

Keith Hoard
Collierville, TN
khoard at gmail.com
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