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Desulfinating trickle charger with Garmin avionics

 
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nuckolls.bob(at)aeroelect
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PostPosted: Sun Oct 20, 2019 2:51 pm    Post subject: Desulfinating trickle charger with Garmin avionics Reply with quote

At 12:05 PM 10/20/2019, you wrote:
Quote:
--> AeroElectric-List message posted by: "James kale" <jimkale(at)roadrunner.com>

Most desulfurization circuits send an occasional high voltage spike down the
charger leads. This only lasts for a few milliseconds. However, the high
voltage spike could lead to a couple of milliseconds of high current. This
should not damage most fuse/circuit breakers, however, there might be some
out there that could be damaged.

There are no known techniques for 'breaking
up' hard sulfate crystals or recovering a
battery that has succumbed to inevitable
end-of-life conditions whether by accident,
poor maintenance or time in service.

Claims to the contrary describe a constellation
of electrical stimuli with carefully defined
physics. The problem is that every patented
desulfation technique has some feature that
sets it apart from all others else it could
not be patented.

I've likened searches for the ultimate
desulfation device to be as productive
as walking into a health supplements
store with 10,000 products seeking
the ultimate mitigation of your particular
discomfort. The proprietor cannot
tell you that any one thing or combination
of things will "fix you right up".
That would be practicing medicine.

What they can do is point you to a book about
the size of a NY phone book that offers
a one-stop source for claims proffered
by every product on their shelves, "here,
check it out . . . we got them all!"

I've done a site search on 'sulfate' for
https://batteryuniversity.com/search/search&keywords=sulfate/P10

Here we are offered 14 articles (out of hundreds
on the site) that speak to lead sulfate. There
is one article . . .

https://batteryuniversity.com/learn/article/additives

that speaks to chemical additives that may recover
some battery performance . . . but it only
works on flooded batteries and is of limited
benefit . . . for our purposes it would not
make an un-airworthy battery flyable.

There are NO articles that speak to recovering
significant capacity in a battery that has
suffered an infestation of hard lead-sulfate
crystals.

The ENERGY produced by so-called desulfation
pulses is tiny. They pose no risk to any
hardware on the airplane that might still
be connected to a battery that you're
trying to recover with the magic battery
charger.

By the way, after a series of discharge/
recharge tests with sequential cap-checks
on a Battery Minder Plus followed by
a 4 month maintenance interval, I find
ZERO improvement in battery performance.
In fact, the test article's 9-volt/15-second
load test value DROPPED from 150A down to
60A.

I would not have expected jaw dropping
recovery . . . but some degree of improvement
would have been tentatively validating
of the manufacturer's claims.

After more than a decade of observation
of and association with the lead-acid battery
market, I'm calling the whole desulfation
thingy 'snake oil'.

If anyone discovers a product backed up
with a report of laboratory/field controlled
experiments that demonstrate the product's
efficacy, I'll be most pleased to eat
my words.


Bob . . .


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jimkale(at)roadrunner.com
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PostPosted: Sun Oct 20, 2019 10:34 pm    Post subject: Desulfinating trickle charger with Garmin avionics Reply with quote

I too have read many articles that both applaud and disprove the desulfurization theory. What I “more or less” believe is the results that many tell about where they get 6 or 7 years from batteries well maintained with with BATTERY MINDER maintainers. In my 50 years of dealing with batteries, I get about 3 or 4 years from flooded batteries and sealed batteries, but I have gotten 5 to 6 with the BATTERY MINDERS. However, I totally agree my experience does not have documented scientific recorded results and maintenance notes to back it up. Overall, I think the BATTERY MINDERS do offer some increased longevity, but I certainly have no proof, just an opinion. Battery chemistry is changing fairly rapidly these days and I am a big fan of Lithium batteries, and I am a real believer that they will smoke and burn if not maintained properly.

Boeing has proved that even the best Lithium battery maintenance and equipment cannot guarantee that there will be no smoke and fire. Personally I will not be using a lithium battery in an airplane that I will ride in. The weight and high current capability are very tempting, but not tempting enough for me.

.m: owner-aeroelectric-list-server(at)matronics.com <owner-aeroelectric-list-server(at)matronics.com> On Behalf Of Robert L. Nuckolls, III
Sent: Sunday, October 20, 2019 5:02 PM
To: aeroelectric-list(at)matronics.com
Subject: RE: Desulfinating trickle charger with Garmin avionics

At 12:05 PM 10/20/2019, you wrote:

Quote:

--> AeroElectric-List message posted by: "James kale" <jimkale(at)roadrunner.com (jimkale(at)roadrunner.com)>

Most desulfurization circuits send an occasional high voltage spike down the
charger leads. This only lasts for a few milliseconds. However, the high
voltage spike could lead to a couple of milliseconds of high current. This
should not damage most fuse/circuit breakers, however, there might be some
out there that could be damaged.


There are no known techniques for 'breaking
up' hard sulfate crystals or recovering a
battery that has succumbed to inevitable
end-of-life conditions whether by accident,
poor maintenance or time in service.

Claims to the contrary describe a constellation
of electrical stimuli with carefully defined
physics. The problem is that every patented
desulfation technique has some feature that
sets it apart from all others else it could
not be patented.

I've likened searches for the ultimate
desulfation device to be as productive
as walking into a health supplements
store with 10,000 products seeking
the ultimate mitigation of your particular
discomfort. The proprietor cannot
tell you that any one thing or combination
of things will "fix you right up".
That would be practicing medicine.

What they can do is point you to a book about
the size of a NY phone book that offers
a one-stop source for claims proffered
by every product on their shelves, "here,
check it out . . . we got them all!"

I've done a site search on 'sulfate' for
https://batteryuniversity.com/search/search&keywords=sulfate/P10

Here we are offered 14 articles (out of hundreds
on the site) that speak to lead sulfate. There
is one article . . .

https://batteryuniversity.com/learn/article/additives

that speaks to chemical additives that may recover
some battery performance . . . but it only
works on flooded batteries and is of limited
benefit . . . for our purposes it would not
make an un-airworthy battery flyable.

There are NO articles that speak to recovering
significant capacity in a battery that has
suffered an infestation of hard lead-sulfate
crystals.

The ENERGY produced by so-called desulfation
pulses is tiny. They pose no risk to any
hardware on the airplane that might still
be connected to a battery that you're
trying to recover with the magic battery
charger.

By the way, after a series of discharge/
recharge tests with sequential cap-checks
on a Battery Minder Plus followed by
a 4 month maintenance interval, I find
ZERO improvement in battery performance.
In fact, the test article's 9-volt/15-second
load test value DROPPED from 150A down to
60A.

I would not have expected jaw dropping
recovery . . . but some degree of improvement
would have been tentatively validating
of the manufacturer's claims.

After more than a decade of observation
of and association with the lead-acid battery
market, I'm calling the whole desulfation
thingy 'snake oil'.

If anyone discovers a product backed up
with a report of laboratory/field controlled
experiments that demonstrate the product's
efficacy, I'll be most pleased to eat
my words.

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
Back to top
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