Today's Message Index:
----------------------
1. 10:47 AM - Re: Battery Tender charger/desulfator (skywagon185guy)
2. 04:26 PM - Lacing two cores of 22awg (Alec Myers)
3. 04:51 PM - Re: Lacing two cores of 22awg (Eric Page)
4. 06:46 PM - Re: noise filter Hijack (Robert L. Nuckolls, III)
5. 06:56 PM - Re: Battery Tender charger/desulfator (Robert L. Nuckolls, III)
Message 1
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| Subject: | Re: Battery Tender charger/desulfator |
Hi Bob,
I have used these maintainers since they first hit the market and have had
no problems with them other than this;
When the input ac power is lost (power outage, mystery GFI trip) and you
don't react to it by disconnecting the unit, the battery under its control
will backflow a low current until the battery is flat.
Is this addressed in this newest model....?
On Tue, Mar 26, 2019 at 3:23 PM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> The latest/greatest specimin in the
> stable of Battery Tender wall warts
> came in.
>
> I dug around in the shop and came up
> with an SVLA battery out of a portable
> air compressor that showed about 9v
> open circuit. When impressed with 14.2
> volts, charge current stabilized at
> about 0.4 amps and would not go any
> lower. After being on charge for about
> 5 hours, I loaded it with 1A and the
> terminal voltage fell to about 11 volts.
>
> I.e. capacity of zero.
>
> I deduce that no cells are shorted.
> I hooked it to the new Battery
> Tender and invoked the maintenance
> mode.
>
> Here are the pertinent pages from the
> users manual.
>
> http://www.aeroelectric.com/articles/Batteries/Battery_Tender.pdf
>
>
> With a 'scope hooked to the battery we
> see this:
> [image: Emacs!]
>
> Yeah, it 'hammers' the battery with 25uS, 16v pulses
> probably 2A or better at an 8.2KHz rate.
>
> I saw no signals that suggested credence for the
> magic 3.26Mhz 'resonant frequency' of lead sulfate . . .
> which I think is bogus. How any physical mass of
> those dimensions might offer resonance at a
> wavelength of 97 meters begs some light-
> footed explanation.
>
> Nonetheless, the product does have a 'hammer'
> mode. The literature suggests that a badly sulfated
> battery may require weeks of rejuvenation . . . this
> test article is in pretty bad shape so we'll
> let 'er cook.
>
> BTW I see that BatteryMinder has come out with
> a 'desulfator' product.
>
> https://tinyurl.com/y4682h48
>
>
> Bob . . .
>
Message 2
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| Subject: | Lacing two cores of 22awg |
Hi All
Whats a nice way to finish (say) a free 12 run of just two cores of 22awg wire?
For instance to the bulb of a flight instrument.
Message 3
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| Subject: | Re: Lacing two cores of 22awg |
Try putting the search term wire wrap braid into eBay. The stuff comes in myriad
colors and diameters at minimal cost.
Eric
> On Mar 27, 2019, at 16:25, Alec Myers <alec@alecmyers.com> wrote:
>
> Whats a nice way to finish (say) a free 12 run of just two cores of 22awg wire?
For instance to the bulb of a flight instrument.
Message 4
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| Subject: | Re: noise filter Hijack |
>
>Would this be appropriate to address the problem in
>
>Post subject: Eye Beam Mini LED / RF interference
>Posted: Fri Feb 22, 2013 10:38 am
>
>The problem persists.
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=488268#488268
Some sort of treatment to the
light fixture's power leads would
be worth trying. The suggested
components are cheap but minimums
and shipping charges would make
a single filter pretty pricey.
I'm getting ready to place an order
with Digikey . . . I can add the
parts to craft a filter to try.
How much current does the fixture
draw? I can add the parts to my
order and ship you an assembled
filter.
Bob . . .
Message 5
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| Subject: | Re: Battery Tender charger/desulfator |
At 12:45 PM 3/27/2019, you wrote:
>Hi Bob,
>I have used these maintainers since they first hit the market and
>have had no problems with them other than this;
>
>When the input ac power is lost (power outage, mystery GFI trip) and
>you don't react to it by disconnecting the unit, the battery under
>its control will backflow a low current until the battery is flat.
>
>Is this addressed in this newest model....?
excellent question. I've got a stable
of 'old' devices in addition to the
new kid on the block. I'll check.
Bob . . .
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