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<DIV>The 2/3A size NimH cell from Batteries of America ( <A
href="mailto:ehyost@chorus.net"><FONT face=Arial color=#ff0000
size=4><EM>ehyost@chorus.net</EM></FONT></A> ) are made by Panasonic. I
have 2 of their 5 cell packs rated at 1100mah and my most recent purchase
was a 5 cell pack rated at 1250mah. With a 8" long heavy duty wire
Futaba pigtail the 5 cell pack weighs 3.85 oz. I do not believe Sanyo
makes a 2/3A size NimH cell. The 2/3A cell is shorter, slightly larger in
diameter and lighter than a traditional AA cell.</DIV>
<DIV>Ed M.</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=precisionaero@comcast.net
href="mailto:precisionaero@comcast.net">Michael Cohen</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, February 27, 2006 10:33
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] NiMH
follow up</DIV>
<DIV><BR></DIV>
<DIV><FONT face=Arial size=2>So, what are the "good" ones? Sanyo,
Panansonic, another brand? </FONT></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=d.pappas@kodeos.com href="mailto:d.pappas@kodeos.com">Dean
Pappas</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, February 27, 2006 8:16
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] NiMH
follow up</DIV>
<DIV><BR></DIV>
<DIV><SPAN class=286141215-27022006><FONT face=Arial color=#0000ff
size=2>Aha!</FONT></SPAN></DIV>
<DIV><SPAN class=286141215-27022006><FONT face=Arial color=#0000ff size=2>Hi
Ed,</FONT></SPAN></DIV>
<DIV><SPAN class=286141215-27022006><FONT face=Arial color=#0000ff
size=2>The "good" low resistance NiMh cells don't need a couple of
conditioning cycles to come to full capacity. I confirmed this with both
Larry at SR Batteries, <EM>and</EM> with Steve at NoBS
Batteries.</FONT></SPAN></DIV>
<DIV><SPAN class=286141215-27022006><FONT face=Arial color=#0000ff
size=2>Both sets of 900H cells that I bought several months
ago, checked within 1% of their best capacity after the first cycle. I
was told that is normal, and to still stick to a max C/2 fast
charge.</FONT></SPAN></DIV>
<DIV><SPAN class=286141215-27022006><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=286141215-27022006><FONT face=Arial color=#0000ff
size=2>Dean</FONT></SPAN></DIV>
<DIV> </DIV>
<P><FONT face="Times New Roman">Dean Pappas</FONT> <BR><FONT
face="Times New Roman">Sr. Design Engineer</FONT> <BR><FONT
face="Times New Roman">Kodeos Communications</FONT> <BR><FONT
face="Times New Roman">111 Corporate Blvd.</FONT> <BR><FONT
face="Times New Roman">South Plainfield, N.J. 07080</FONT> <BR><FONT
face="Times New Roman">(908) 222-7817 phone</FONT> <BR><FONT
face="Times New Roman">(908) 222-2392 fax</FONT> <BR><FONT
face="Times New Roman">d.pappas@kodeos.com</FONT> </P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org]<B>On Behalf Of </B>Ed
Alt<BR><B>Sent:</B> Monday, February 27, 2006 6:40 AM<BR><B>To:</B> NSRCA
Mailing List<BR><B>Subject:</B> Re: [NSRCA-discussion] NiMH follow
up<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Ed:</FONT></DIV>
<DIV><FONT face=Arial size=2>Yep, 1/10C would be 220 mA for your 2200 mAh
pack. To condition a NiMh pack when brand new, you do several
conditioning charges at 1/10C. You want to go a full 24 hours at
1/10C, do a discharge to complete a cycle and repeat for a total of 3 or 4
full cycles. This will generally get you to full capacity and
also gets the cells ready to accept higher rate charging and with the
right charger, they will then start to give a reliable indication of when
they have peaked. After these first conditioning charges, you do not
want to exceed about 16 hrs at 1/10C, though at 1/10C it's a low enough
rate that you're not going to damage it if you do go over.
Anything higher than 1/10C can shorten the life of the cells if repeated
overcharging is done. The higher the rate and the more time it is
overcharged, the faster the degradation can occur.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Ed</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </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=divesplat@yahoo.com href="mailto:divesplat@yahoo.com">Ed
Deaver</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, February 27, 2006
12:57 AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion]
NiMH follow up</DIV>
<DIV><BR></DIV>
<DIV>OK, for us non-electical whiz bang guys, please explain the C
charge. I have heard it before and tried what was suggested on RCU
without success.</DIV>
<DIV> </DIV>
<DIV>My new NmHD pack is a 2200mah, 4 cell pack. To condiditon it
properly for first flights what should I do? </DIV>
<DIV> </DIV>
<DIV>Does 1/10 C mean charge at 220 mah for 16 hrs??</DIV>
<DIV> </DIV>
<DIV>THanx for the explanation.</DIV>
<DIV> </DIV>
<DIV>ed<BR><BR><B><I>Michael Cohen
<precisionaero@comcast.net></I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Thanks
to those who helped me with the advice. The 1/10 C change was the
<BR>answer. Both packs are happily at 1610-1690 capacity for their
1650 rating. <BR>I also visited an old friend's website,
Electrodynamics in Michigan. They <BR>had an interesting write up on
their website about NiCD (with a little NiMH <BR>sprinkled in! ). I
used to buy all my switches, extensions, and battery packs <BR>from
them when I lived in the Great White North. Their advice was 1/10 C
<BR>also, but they had lots of other good info there as well. I
recommend you <BR>take a look, unless your one of those Lithium
people.<BR><BR>Mike Cohen
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