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<DIV>Vince:</DIV>
<DIV>You make good points about all the other devices that are around us with
LiPo and LiIon batteries integrated into them. How many hundreds of
millions or even billions of devices are working safely worldwide is anyone's
guess, but it's a huge number. It's true that sometimes a phone or
notebook catches fire, but the occurrence is remarkably low. Think about this
the next time you board a flight - scary if something doesn't work right,
eh?</DIV>
<DIV> </DIV>
<DIV>But the key to the fact that the danger is relatively low in consumer
products is right there in that one word: integrated. Everything is
designed to work together, with temperature sensors added as well. It's
the way we use our batteries by mixing & matching that exposes us to a much
higher risk, hence the real need for the added precautions. Re. the
charging rates being lower in consumer devices, this is generally true, but some
higher current devices like notebook computers have fairly high charge rates as
well, though not as high as we try to push them.</DIV>
<DIV> </DIV>
<DIV>Re. battery powered device safety on airplanes, back when we all used NiMH
batteries in notebooks, I witnessed a scary event while waiting to board at
Newark. I was traveling with my boss, who always carried an extra battery
on trips and who also always wore his work ID badge on a metal chain around his
neck. When the boarding call came, he realized he was still wearing his ID
in public and tossed it into the bag where he had just placed the spare
battery. Lots of smoke. We were more than a little glad that
this happened before we got on and he stowed the bag. Imagine if something
shifted at just the wrong time. Yeah, I love flying!</DIV>
<DIV> </DIV>
<DIV>Ed</DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=mailto:vicenterc@comcast.net
href="mailto:vicenterc@comcast.net">vicenterc@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=mailto:nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> ; <A
title=mailto:nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=mailto:DaveL322@comcast.net
href="mailto:DaveL322@comcast.net">DaveL322@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, November 30, 2006 12:54
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Lithium
Ion batteries</DIV>
<DIV><BR></DIV>
<DIV>Thanks Dave,</DIV>
<DIV> </DIV>
<DIV>Looks like we arrive to a good conclusion. We have to baby sit the
charging process of any battery if we want to be 100% safe.
Also, it appears base on our observations that the chances to have the
problem with lithium is a little higher than older technologies. I could
be wrong but that is the only reason to have the instructions in the lithium
batteries. Definitively, I baby sit when I charge my electric
planes batteries (lithium) and I take them out of the
plane. However, I don't baby sit the rx and tx (Nicads or NiMh) and
I don't take those out of the plane. I don't baby sit the laptop and
cellular phones. What about cordorless phones. They are charging
all time. Well , I just found that I am not 100% safe.</DIV>
<DIV> </DIV>
<DIV>Vicent "Vince" Bortone </DIV>
<DIV> </DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR>From: DaveL322@comcast.net <BR>
<DIV>Vicente,</DIV>
<DIV> </DIV>
<DIV>For the 30 years I've been using rechargeably batteries in RC, I have
had one nicad and one nimh vent and smoke - no fire, no explosion, but
definitely very hot and smoldering. Certainly hot enough to have
caused a fire if in a different environment. In both cases, I was
close enough to smell the problem and remove the batteries from the plane
without damage to anything other than the batteries (and maybe some
charred/scorch marks).</DIV>
<DIV> </DIV>
<DIV>Point being, ANY battery can have a problem. The higher the
energy density and larger the amount of energy stored, the greater the
potential problem. And it would seem in RC applications, the more
mature battery technologies are the safest for our typical use, but some
would advocate never charging any battery unsupervised.</DIV>
<DIV> </DIV>
<DIV>Regards,</DIV>
<DIV><BR>Dave Lockhart</DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR>From: vicenterc@comcast.net <BR>
<DIV>Here are the safety instructions for TP batteries web site: </DIV>
<DIV> </DIV>
<DIV><A
title=http://www.thunderpower-batteries.com/images/THPSafetyWarnings.pdf
href="http://www.thunderpower-batteries.com/images/THPSafetyWarnings.pdf">http://www.thunderpower-batteries.com/images/THPSafetyWarnings.pdf</A></DIV>
<DIV> </DIV>
<DIV>I could not find the safety instructions on the Duralite web
site. </DIV>
<DIV> </DIV>
<DIV>Here the safety instructions from Fromeco web site:</DIV>
<DIV> </DIV>
<DIV><A title=http://www.fromeco.org/shop/ainstructions%20batteries.htm
href="http://www.fromeco.org/shop/ainstructions%20batteries.htm">http://www.fromeco.org/shop/ainstructions%20batteries.htm</A></DIV>
<DIV> </DIV>
<DIV>The problem I have is that I don't have time to baby sit while the
battery are charging. I try to do it with my small electric planes
and I can not imagine babysitting all my planes while charging.
Probably this is the only issue I have in regard lithium
batteries. Do we really need to follow this instructions? If
not, the manufactures will need to take the risk and take those
instructions out from the web sites.</DIV>
<DIV> </DIV>
<DIV>Vicente "Vince" Bortone</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">--------------
Original message -------------- <BR>From: "Pete Cosky"
<pcosky@comcast.net> <BR>
<META content="MSHTML 6.00.2900.2995" name=GENERATOR>
<DIV><FONT face=Arial color=#000000 size=2>I had bought a few NMP 2400
mAh packs from Central last year. I don't see them on their website now
though.</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>I am apprehensive to go
Li-Poly due to the packaging and possibility of damage and fire. The
Li-Ion is in a metal can that can shield it from physical damage. Using
the wrong charger on the other hand would still be an issue.
</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>The Li-Ion packs are lighter
than a NiCad or Ni-Mh packs so you gain a weight savings and they need
less maintenance than the aforementioned battery types. </FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>I even made a pack to replace
the Ni-Mh pack in my Multiplex EVO and it is holding up
well.</FONT></DIV>
<DIV><FONT face=Arial color=#000000 size=2></FONT> </DIV>
<DIV><FONT face=Arial color=#000000 size=2>As always this is nothing
more than the ramblings of a longhaired freak.....</FONT></DIV>
<DIV><BR><B><I>Robert & Casey Green <A class=moz-txt-link-rfc2396E
title=mailto:robcase1@cox.net
href="mailto:robcase1@cox.net"><robcase1@cox.net></A></I></B>
wrote:</DIV>
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<DIV><FONT face=Arial size=2>Hey Guys, I am thiking about running
lithium-ions batteries this year. Besides duralite, is there
anything else worth using.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Thanks in advance.</FONT></DIV>
<DIV> </DIV>
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