REFLECTOR:Odyssey Battery

KeithHallsten reflector@tvbf.org
Sat, 31 Jan 2004 12:21:47 -0800


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Jim,

Sealed Lead-Acid (SLA) batteries are also sometimes called "starved =
electrolyte" or "recombinant gas" (RG) batteries.  There is a fiberglass =
cloth mat between the lead plates that is "almost" saturated with the =
acid electrolyte.  That means there is no "free" water in the case, so =
if you were to drill a hole clear through the battery, no liquid would =
drip out.  Technically this is not really "dry", but it's not as "wet" =
as an old "wet cell" battery that we grew up with.  This means that they =
can be shipped without a "hazardous material" surcharge, so it's =
practical to get them mail order if you can't find a good local source.  =
However, you can find them at your local Wal-Mart or Pep Boys.

This type of battery construction has a much lower internal resistance, =
so a very small battery can produce enough current to crank your engine. =
 As a side advantage, this type of construction gives the battery =
extremely good resistance to vibration, so it's the type of barttery =
used in jet skis, ATV's, motorcycles, automobiles, and MODERN airplanes. =
 The battery does not need a battery box, and can be mounted in any =
convenient position - it doesn't have to be "right side up".  These =
batteries also have a very low self-discharge rate, so they will =
typically hold a charge for many months without recharging.

I don't know whether anyone is actually making gel cel batteries =
anymore, but you often find ignorant counter men who call SLA batteries =
"gel cells".  A true gel cell battery would not be very satisfactory for =
our purposes.

Keith Hallsten
  =20
  ----- Original Message -----=20
  From: Jim Sower=20
  To: reflector@tvbf.org=20
  Sent: Saturday, January 31, 2004 11:01 AM
  Subject: Re: REFLECTOR:Odyssey Battery


  What do they mean on the web page by "Dry Cell"?  Gel cell? What?=20
  Al Gietzen wrote:=20

    Is anyone using the Odyssey battery and if so which one?
    Dave B.

    I'm using the PC680MJ =
(http://shop.store.yahoo.com/batterycountry/ody-pc680mj.html) of which I =
will have 2 for my dual battery system.  I bought one almost 4 years ago =
for running the gear, testing circuits, inflating tires, etc. And =
although that's light duty use, it still acts like new.  I'll buy the =
second when I'm ready to fly, and probably change one out every two =
years; we'll see.=20


    Al

  --=20
  Jim Sower ... Destiny's Plaything=20
  Crossville, TN; Chapter 5=20
  Long-EZ N83RT, Velocity N4095T=20
   =20

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<BODY lang=3DEN-US vLink=3D#800080 link=3D#0000ff bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Jim,</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Sealed Lead-Acid (SLA) batteries are =
also sometimes=20
called "starved electrolyte" or "recombinant gas" (RG) batteries.&nbsp; =
There is=20
a fiberglass cloth mat between the lead plates that is "almost" =
saturated with=20
the acid electrolyte.&nbsp; That means there is no "free" water in=20
the&nbsp;case, so if you were to drill a hole clear through the battery, =
no=20
liquid would drip out.&nbsp; Technically this is not really "dry", but =
it's not=20
as "wet" as an old "wet cell" battery that we grew up with.&nbsp; This =
means=20
that they can be shipped without a "hazardous material" surcharge, so =
it's=20
practical to get them mail order if you can't find a good local =
source.&nbsp;=20
However, you can find them at your local Wal-Mart or Pep =
Boys.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>This type of battery construction has a =
much lower=20
internal resistance, so a very small battery can produce enough current =
to crank=20
your engine.&nbsp; As a side advantage, this type of construction gives =
the=20
battery extremely good resistance to vibration, so it's the type of =
barttery=20
used in jet skis, ATV's, motorcycles, automobiles, and MODERN =
airplanes.&nbsp;=20
The battery does not need a battery box, and can be mounted in any =
convenient=20
position - it doesn't have to be "right side up".&nbsp; These batteries =
also=20
have a very low self-discharge rate, so they will typically hold a =
charge for=20
many months without recharging.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>I don't know whether anyone is actually =
making gel=20
cel batteries anymore, but you often find ignorant counter men who call =
SLA=20
batteries "gel cells".&nbsp; A true gel cell battery would not be very=20
satisfactory for our purposes.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>Keith Hallsten</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>&nbsp;&nbsp;&nbsp;</FONT></DIV>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; =
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
  <A title=3Dcanarder@frontiernet.net =
href=3D"mailto:canarder@frontiernet.net">Jim=20
  Sower</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dreflector@tvbf.org=20
  href=3D"mailto:reflector@tvbf.org">reflector@tvbf.org</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday, January 31, =
2004 11:01=20
  AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: REFLECTOR:Odyssey=20
  Battery</DIV>
  <DIV><BR></DIV>What do they mean on the web page by "Dry Cell"?&nbsp; =
Gel=20
  cell? What?=20
  <P>Al Gietzen wrote:=20
  <BLOCKQUOTE TYPE=3D"CITE">
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    <DIV class=3DSection1>
    <DIV class=3DMsoNormal><SPAN=20
    style=3D"FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY: =
Verdana"></SPAN></DIV>
    <DIV class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><SPAN=20
    style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT =
face=3DArial><FONT=20
    size=3D-1>Is anyone using the Odyssey battery and if so which=20
    one?</FONT></FONT></SPAN></DIV>
    <DIV class=3DMsoNormal style=3D"MARGIN-LEFT: 0.5in"><SPAN=20
    style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"><FONT =
face=3DArial><FONT=20
    size=3D-1>Dave B.</FONT></FONT></SPAN></DIV>
    <P class=3DMsoNormal><SPAN=20
    style=3D"FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY: Verdana"></SPAN>
    <P class=3DMsoNormal><SPAN=20
    style=3D"FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY: Verdana"><FONT=20
    face=3DVerdana><FONT size=3D-1><FONT color=3D#0000ff>I=92m using the =
PC680MJ=20
    (</SPAN><SPAN=20
    style=3D"FONT-SIZE: 11pt; COLOR: fuchsia; FONT-FAMILY: =
Verdana"><SPAN=20
    style=3D"COLOR: fuchsia"></FONT><FONT color=3D#ff00ff><A=20
    =
href=3D"http://shop.store.yahoo.com/batterycountry/ody-pc680mj.html">http=
://shop.store.yahoo.com/batterycountry/ody-pc680mj.html</SPAN></A>)</SPAN=
><SPAN=20
    style=3D"FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY: =
Verdana"></FONT><FONT=20
    color=3D#0000ff> of which I will have 2 for my dual battery =
system.&nbsp; I=20
    bought one almost 4 years ago for running the gear, testing =
circuits,=20
    inflating tires, etc. And although that=92s light duty use, it still =
acts like=20
    new.&nbsp; I=92ll buy the second when I=92m ready to fly, and =
probably change=20
    one out every two years; we=92ll see.</FONT></FONT></FONT></SPAN>=20
    <P class=3DMsoNormal><SPAN=20
    style=3D"FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY: Verdana"></SPAN>
    <P class=3DMsoNormal><SPAN=20
    style=3D"FONT-SIZE: 11pt; COLOR: blue; FONT-FAMILY: Verdana"><FONT=20
    face=3DVerdana><FONT color=3D#0000ff><FONT=20
    size=3D-1>Al</FONT></FONT></FONT></SPAN></P></DIV></BLOCKQUOTE>
  <P>-- <BR>Jim Sower ... Destiny's Plaything <BR>Crossville, TN; =
Chapter 5=20
  <BR>Long-EZ N83RT, Velocity N4095T <BR>&nbsp; =
</P></BLOCKQUOTE></BODY></HTML>

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