---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Wed 03/27/19: 5 ---------------------------------------------------------- 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 _____________________________________ Time: 10:47:23 AM PST US From: skywagon185guy Subject: Re: AeroElectric-List: 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 _____________________________________ Time: 04:26:33 PM PST US From: Alec Myers Subject: AeroElectric-List: 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 _____________________________________ Time: 04:51:55 PM PST US From: Eric Page Subject: Re: AeroElectric-List: 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 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 _____________________________________ Time: 06:46:27 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: 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 _____________________________________ Time: 06:56:07 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: 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. 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