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wayne.e(at)grandecom.net
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 Posted: Fri May 18, 2007 12:09 pm Post subject: Batterydied |
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I made a post yesterday that my battery died and wouldn't start the plane. It did die but I said it was an Odyssey but it actual is a Concorde RG25XC. I bought this battery in Feb this year and when I went to start the plane yesterday for the first time it was DOA. I charged it slow charge overnight, which made no change in it's cranking power.
In talking to the people at TexAir they said that you don't want to buy this battery and let it set because it will go bad like mine did. They never seem to tell you that type of stuff up front do they.
Just an FYI for those like me who got a battery in advance of first start.
[quote][b]
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rvbuilder(at)sausen.net
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| Posted: Fri May 18, 2007 5:45 pm Post subject: Batterydied |
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Sounds right. The RG style battery is like any other flooded lead-acid type of battery and needs to be kept charged or it will eventually go dead and be useless. The AGM batteries like Odyssey are very good at maintaining a charge while in storage, in some cases for years without being charged. Bottom line is to keep your batteries topped off for maximum life.
Michael
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Wayne Edgerton
Sent: Friday, May 18, 2007 3:09 PM
To: rv10-list(at)matronics.com
Subject: Batterydied
I made a post yesterday that my battery died and wouldn't start the plane. It did die but I said it was an Odyssey but it actual is a Concorde RG25XC. I bought this battery in Feb this year and when I went to start the plane yesterday for the first time it was DOA. I charged it slow charge overnight, which made no change in it's cranking power.
In talking to the people at TexAir they said that you don't want to buy this battery and let it set because it will go bad like mine did. They never seem to tell you that type of stuff up front do they.
Just an FYI for those like me who got a battery in advance of first start.
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01234
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Rick S.
Joined: 12 Feb 2006
Posts: 347
Location: Las Vegas
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| Posted: Sat May 19, 2007 12:36 pm Post subject: Batterydied |
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One quick note on batteries....make sure you don't leave them on bare concrete...least that's what I've always been told, sucks the energy right out of them. I heard it a long time ago...it may be a youngs wives tale.
Rick S.
40185
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Rick S.
RV-10
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apilot2(at)gmail.com
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| Posted: Sat May 19, 2007 5:44 pm Post subject: Batterydied |
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Actually true, when wet cell batteries were encased in hard rubber
cases, which went away probably 30 years or so ago in most
applications. You might still find a few. The hard rubber, like all
rubber had a degree of permeability. Not an issue with anything in a
modern plastic case.
On 5/19/07, Rick <ricksked(at)earthlink.net> wrote:
| Quote: |
One quick note on batteries....make sure you don't leave them on bare concrete...least that's what I've always been told, sucks the energy right out of them. I heard it a long time ago...it may be a youngs wives tale.
Rick S.
40185
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jdalton77(at)comcast.net
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| Posted: Sat May 19, 2007 5:59 pm Post subject: Batterydied |
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Rick,
I'cve recently done some research on this subject (we put up a solar and
windmill project at out house) and I found out that concrete energy sucking
is a myth.
But leaving them sitting around for a long time anywhere will hurt them.
Jeff Dalton
Wings
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KiloPapa
Joined: 24 May 2006
Posts: 142
Location: Pearblossom, CA
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| Posted: Sat May 19, 2007 8:23 pm Post subject: Batterydied |
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Some references on whether batteries stored on concrete loose their charge
faster or not:
http://www.carquest.com/partsBatteryFAQMyths.html#2
If I set a battery on concrete, it will quickly loose its charge.
Although it is true that after a period of time batteries do
self-discharge, placing them on concrete won't speed the process. What you
place your battery on is not as important as the type of environment you
expose it to. A battery that is stored at cooler temperatures (not below
freezing), and protected from severe extremes, will last much longer than a
battery stored at extreme temperatures.
http://www.interstatebatteries.com/www_2001/content/faqs/tech_talk/maintenance/faq_tech_maint.htm
Will storing my battery on concrete drain the charge? No. Regarding today's
batteries, this is a myth. A battery placed on concrete will not discharge
any faster, but a battery will discharge over a period of time wherever it
is placed. If the battery has a surface layer of acid or grime which is
conductive, the battery will self-discharge more rapidly than if it were
clean and dry.
This myth does have some historical basis. Many years ago, wooden battery
cases encased a glass jar with the battery in it. Any moisture on the floor
could cause the wood to swell and possibly fracture the glass, causing it to
leak. Later came the introduction of the "hard rubber" cases, which were
somewhat porous. A current could be conducted through this container, which
had a high carbon content, if the moist concrete floor permitted the current
to find an electrical ground. The wise advise of the old days to "not store
batteries on concrete" has apparently been passed down to us today, but it
no longer applies.
| Quote: |
One quick note on batteries....make sure you don't leave them on bare
concrete...least that's what I've always been told, sucks the energy right
out of them. I heard it a long time ago...it may be a youngs wives tale.
Rick S.
40185
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Kevin
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Sun May 20, 2007 4:28 am Post subject: Batterydied |
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It isn't a myth, just out-dated information, assuming you aren't using a
rubber case battery..not many of those left around. A myth implies it
never was true, this has a basis in fact, just old and no longer applicable.
jdalton77 wrote:
[quote]
Rick,
I'cve recently done some research on this subject (we put up a solar
and windmill project at out house) and I found out that concrete
energy sucking is a myth.
But leaving them sitting around for a long time anywhere will hurt them.
Jeff Dalton
Wings
---
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http://www.matronics.com/Navigator?RV10-List |
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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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swrpilot(at)bellsouth.net
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| Posted: Mon May 21, 2007 10:29 am Post subject: Batterydied |
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I recommend the Power On Board Smart Battery Charger. I have the model VEC1095APOB with up to 25 amp charge and 75 amp start. Sam's Club sells these for about $60.
These chargers are amazing, and have settings for most lead-acid battery types. They weigh just a few pounds and include automatic charge rates, volt/amp meter, battery diagnostics and desulfation.
The failure mode for new lead-acid batteries that sit unused for a month or two without charge/discharge cycling is usually sulfation of the plates. This battery charger has a 'desulfation' setting that applies a high frequency to the battery that reverses the process. Be sure to disconnect the battery from the vehicle first. Heavily sulfated batteries may need a week or more of 'desulfation', and some may be irreverseable. The failure mode for older batteries tends to be plate erosion and there is no cure for that. A battery tender will prevent sulfation in addition to maintaining a full charge.
Many of the newer battery chargers have the desulfation feature, but most cost much more. Jim Weir wrote an article in Kitplanes a few years ago about how to build one if you want to take the time away from the RV-10.
Steve Roberts
Still lurking
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