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nuckolls.bob(at)aeroelect
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 Posted: Sun Mar 17, 2019 8:13 am Post subject: Battery Charger/Maintainers |
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At 03:37 PM 3/15/2019, you wrote:
| Quote: | --> AeroElectric-List message posted by: Kelly McMullen <kellym(at)aviating.com>
Odyssey batteries are often prematurely aged by keeping on a battery maintainer. If you contact Odyssey they can give you a rejuvenation protocol to restore the battery to near full capacity. |
Color me skeptical about battery failures
on "maintainers" . . .
There was some discussion flying around the
av-circles over 10 years ago wherein readers
reported that Odyssey 'banned' certain brands
of maintainers . . . Battery Tender included.
I was mystified by this. I had been using
Battery Tenders and Battery Minders on
lab batteries for years with no observable
problems . . . the point of a maintainer is
to boost the voltage on a fully charged
battery to some point just above it's
open circuit resting voltage. The rationale
says that one wants to transfer internal
parasitic discharge loads from the CHEMISTRY
to an EXTERNAL source.
My maintainers always sat at about 13.1 to
13.4 volts after their run-up during
charge.
[img]cid:.0[/img]
[img]cid:.1[/img]
During a battery failure investigation for Raytheon-
Beech, I had occasion to query a Hawker-Enersys engineer
about this topic.
He had no knowledge of any perceived
problems with the wall-warts vs. Odyssey products . . .
those issues were addressed in a different
division of Enersys.
I continued to use my trusty constellation of
wall-warts with pleasing results.
I note that Odyssey has their own flavor of
battery charger. See https://tinyurl.com/y67jy8tb
It offers a charging profile that looks like this:
[img]cid:.0[/img]
A search of the 'net revealed several products
featuring 4 to 7 stages of charging. Who wuda thunk
it? I wondered if that 'auto maintain' profile
was dictated by Odyssey . . . or simply popped
up as a feature in a charger they are re-branding.
The 'storage recondition mode' is also a puzzle.
It has the look and smell of a pulsed energy
profile intended to 'break up' lead sulfide
crystals. I've seen countless articles on battery
de-sufation with near miraculous claims for
having preserved or recovering a trashed lead-acid
battery.
Check out this article at Battery University:
https://tinyurl.com/y2kdehzt
The comments are worth reading too. Note that
one comment that cites dozens of patents
on de-sulfation technology wherein the
inventor claims all previous patents are
inadequate or worthless.
I note that this document on the Odyssey
website . . .
https://tinyurl.com/y429aqbj
speaks of SVLA battery recovery process
that calls for several cycles of discharge
to 10v, charge and top off at 14.7 followed
by float at 13.6. Those numbers have been
around for nearly 30 years. To date, I've
not learned of any useful deviations.
Just for grins, I ordered this latest-n-greatest
version of a Battery Minder
https://tinyurl.com/y32cjfvv
So forgive me if, in the absence of any
engineering test documentation, I am
reluctant to embrace any notion that
there's really something new under the
sun in battery chargers. I'll keep
y'al posted on the super-whippy Battery
Tender.
| Quote: | | I'm at about 4 years on my Odyssey 925 in the Aridzona heat, and still working fine. |
Have you cap-checked the battery recently?
Bob . . .
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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skywagon185(at)gmail.com
Guest
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| Posted: Sun Mar 17, 2019 9:28 am Post subject: Battery Charger/Maintainers |
|
|
Thanks Bob for these details. . .
Confirms my use of these little maintainers over the last 15+ years on both autos and planes.
Looking forward to your review of the "latest" Battery Tender especially what the "pulsed" energy is really doing as mentioned in the ad....
On Sun, Mar 17, 2019 at 9:19 AM Robert L. Nuckolls, III <nuckolls.bob(at)aeroelectric.com (nuckolls.bob(at)aeroelectric.com)> wrote:
| Quote: | At 03:37 PM 3/15/2019, you wrote:
| Quote: | --> AeroElectric-List message posted by: Kelly McMullen <kellym(at)aviating.com (kellym(at)aviating.com)>
Odyssey batteries are often prematurely aged by keeping on a battery maintainer. If you contact Odyssey they can give you a rejuvenation protocol to restore the battery to near full capacity. |
Color me skeptical about battery failures
on "maintainers" . . .
There was some discussion flying around the
av-circles over 10 years ago wherein readers
reported that Odyssey 'banned' certain brands
of maintainers . . . Battery Tender included.
I was mystified by this. I had been using
Battery Tenders and Battery Minders on
lab batteries for years with no observable
problems . . . the point of a maintainer is
to boost the voltage on a fully charged
battery to some point just above it's
open circuit resting voltage. The rationale
says that one wants to transfer internal
parasitic discharge loads from the CHEMISTRY
to an EXTERNAL source.
My maintainers always sat at about 13.1 to
13.4 volts after their run-up during
charge.
[img]cid:1698cac2aecaba1f4971[/img]
[img]cid:1698cac2aecad56cd362[/img]
During a battery failure investigation for Raytheon-
Beech, I had occasion to query a Hawker-Enersys engineer
about this topic.
He had no knowledge of any perceived
problems with the wall-warts vs. Odyssey products . . .
those issues were addressed in a different
division of Enersys.
I continued to use my trusty constellation of
wall-warts with pleasing results.
I note that Odyssey has their own flavor of
battery charger. See https://tinyurl.com/y67jy8tb
It offers a charging profile that looks like this:
[img]cid:1698cac2aecaba1f4971[/img]
A search of the 'net revealed several products
featuring 4 to 7 stages of charging. Who wuda thunk
it? I wondered if that 'auto maintain' profile
was dictated by Odyssey . . . or simply popped
up as a feature in a charger they are re-branding.
The 'storage recondition mode' is also a puzzle.
It has the look and smell of a pulsed energy
profile intended to 'break up' lead sulfide
crystals. I've seen countless articles on battery
de-sufation with near miraculous claims for
having preserved or recovering a trashed lead-acid
battery.
Check out this article at Battery University:
https://tinyurl.com/y2kdehzt
The comments are worth reading too. Note that
one comment that cites dozens of patents
on de-sulfation technology wherein the
inventor claims all previous patents are
inadequate or worthless.
I note that this document on the Odyssey
website . . .
https://tinyurl.com/y429aqbj
speaks of SVLA battery recovery process
that calls for several cycles of discharge
to 10v, charge and top off at 14.7 followed
by float at 13.6. Those numbers have been
around for nearly 30 years. To date, I've
not learned of any useful deviations.
Just for grins, I ordered this latest-n-greatest
version of a Battery Minder
https://tinyurl.com/y32cjfvv
So forgive me if, in the absence of any
engineering test documentation, I am
reluctant to embrace any notion that
there's really something new under the
sun in battery chargers. I'll keep
y'al posted on the super-whippy Battery
Tender.
| Quote: | | I'm at about 4 years on my Odyssey 925 in the Aridzona heat, and still working fine. |
Have you cap-checked the battery recently?
Bob . . .
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Sun Mar 17, 2019 10:58 am Post subject: Battery Charger/Maintainers |
|
|
At 12:24 PM 3/17/2019, you wrote:
| Quote: | Thanks Bob for these details. . .
Confirms my use of these little maintainers over the last 15+ years on both autos and planes.
Looking forward to your review of the "latest" Battery Tender especially what the "pulsed" energy is really doing as mentioned in the ad.... |
It may take awhile . . . I read a testimonial
on this product wherein the writer claimed
to have 'recovered a trashed battery to
good as new'. Of course, there was no
quantitative analysis of performance
in the recovered battery . . . I suspect
that it started and engine but capacity
never checked.
Out here in oil-patch-and-cowpie-country,
there is a virtual mountain test subjects
available to test . . . but the writer
of the review did confess that he left
the whizzy maintainer on for 90 days!
We'll see . . .
Bob . . .
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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