---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sun 07/28/19: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:55 AM - Connect 12V Power Pack to Airplane (Art Zemon) 2. 08:34 AM - Re: Connect 12V Power Pack to Airplane (Ken Ryan) 3. 11:18 AM - Re: Connect 12V Power Pack to Airplane (user9253) 4. 08:05 PM - Re: Connect 12V Power Pack to Airplane (Art Zemon) 5. 08:18 PM - Re: Connect 12V Power Pack to Airplane (don van santen) ________________________________ Message 1 _____________________________________ Time: 06:55:52 AM PST US From: Art Zemon Subject: AeroElectric-List: Connect 12V Power Pack to Airplane I was at AirVenture this week and spent a lot of time in a chair next to my airplane. I took a door off of the BD-4C and people stopped to ask questions. It was great! I got the idea of lighting up the EFIS screens. I have a Jackery 167 watt/hour portable power pack . I borrowed a little Black & Decker 2A battery charger/maintainer . I hooked it up to the airplane and powered it from the 110V inverted on the power pack. That was all good and it gave me a few hours of power with the watt meter on the power supply reading around 30 watts. Running the 110V inverter used 4 watts and a bunch of the battery maintainer's energy was being dissipated as heat. My power supply also has a 12V DC output which measures 13.3V with no load. Could I have hooked that output to the airplane instead of the battery maintainer, without damaging the battery? -- Art Z. -- https://CheerfulCurmudgeon.com/ *Love the stranger for you yourselves were strangers in Egypt. *Deut. 10:19 ________________________________ Message 2 _____________________________________ Time: 08:34:58 AM PST US From: Ken Ryan Subject: Re: AeroElectric-List: Connect 12V Power Pack to Airplane Art, I cannot answer your question directly, but on my airplane there are a couple of easily accessible places to clip on where I can feed the bus without turning on the master switch, leaving the battery out of the picture completely. Doing that also eliminates the current draw of the battery contactor. On Sun, Jul 28, 2019 at 6:00 AM Art Zemon wrote: > I was at AirVenture this week and spent a lot of time in a chair next to > my airplane. I took a door off of the BD-4C and people stopped to ask > questions. It was great! > > I got the idea of lighting up the EFIS screens. I have a Jackery 167 > watt/hour portable power pack > . I borrowed a little Black > & Decker 2A battery charger/maintainer > . > I hooked it up to the airplane and powered it from the 110V inverted on the > power pack. That was all good and it gave me a few hours of power with the > watt meter on the power supply reading around 30 watts. > > Running the 110V inverter used 4 watts and a bunch of the battery > maintainer's energy was being dissipated as heat. > > My power supply also has a 12V DC output which measures 13.3V with no > load. Could I have hooked that output to the airplane instead of the > battery maintainer, without damaging the battery? > > -- Art Z. > > -- > https://CheerfulCurmudgeon.com/ > > *Love the stranger for you yourselves were strangers in Egypt. *Deut. > 10:19 > ________________________________ Message 3 _____________________________________ Time: 11:18:27 AM PST US Subject: AeroElectric-List: Re: Connect 12V Power Pack to Airplane From: "user9253" The aircraft battery normally gets charged with over 14 volts. So 13.3 volts are not going to hurt it. The lithium battery will discharge into a lead acid battery connected in parallel. So it is best not to connect the two batteries together. Ken's suggestion is a good one. Connect the lithium battery downstream of the battery contactor, which remains off. According to the Amazon ad, the lithium power supply can output up to 7 amps at 12 volts. So it should handle a 2 or 3 amp, 12 VDC load. Your idea to eliminate the inverter and charger is a good one. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=490565#490565 ________________________________ Message 4 _____________________________________ Time: 08:05:38 PM PST US From: Art Zemon Subject: Re: AeroElectric-List: Connect 12V Power Pack to Airplane I think that you have hit on the best idea, Ken. I actually have an old fashioned cigarette lighter plug which I planned to install but never got around to installing. That will give me exactly the connect that I require and, coincidentally, my power pack came with exactly the cable that I need. -- Art Z. On Sun, Jul 28, 2019 at 10:51 AM Ken Ryan wrote: > Art, I cannot answer your question directly, but on my airplane there are > a couple of easily accessible places to clip on where I can feed the bus > without turning on the master switch, leaving the battery out of the > picture completely. Doing that also eliminates the current draw of the > battery contactor. > > On Sun, Jul 28, 2019 at 6:00 AM Art Zemon wrote: > >> I was at AirVenture this week and spent a lot of time in a chair next to >> my airplane. I took a door off of the BD-4C and people stopped to ask >> questions. It was great! >> >> I got the idea of lighting up the EFIS screens. I have a Jackery 167 >> watt/hour portable power pack >> . I borrowed a little Black >> & Decker 2A battery charger/maintainer >> . >> I hooked it up to the airplane and powered it from the 110V inverted on the >> power pack. That was all good and it gave me a few hours of power with the >> watt meter on the power supply reading around 30 watts. >> >> Running the 110V inverter used 4 watts and a bunch of the battery >> maintainer's energy was being dissipated as heat. >> >> My power supply also has a 12V DC output which measures 13.3V with no >> load. Could I have hooked that output to the airplane instead of the >> battery maintainer, without damaging the battery? >> > -- https://CheerfulCurmudgeon.com/ *Love the stranger for you yourselves were strangers in Egypt. *Deut. 10:19 ________________________________ Message 5 _____________________________________ Time: 08:18:20 PM PST US From: don van santen Subject: Re: AeroElectric-List: Connect 12V Power Pack to Airplane Art, you may want to use a "Powerlett" receptacle and plug. Cigarette lightets are not good at any where above about 3 amps for continuos usage. Burned a few on my RV7. Have han no issues with the Powerlet stuff. On Sun, Jul 28, 2019, 20:10 Art Zemon wrote: > I think that you have hit on the best idea, Ken. I actually have an old > fashioned cigarette lighter plug which I planned to install but never got > around to installing. That will give me exactly the connect that I require > and, coincidentally, my power pack came with exactly the cable that I need. > > -- Art Z. > > On Sun, Jul 28, 2019 at 10:51 AM Ken Ryan wrote: > >> Art, I cannot answer your question directly, but on my airplane there are >> a couple of easily accessible places to clip on where I can feed the bus >> without turning on the master switch, leaving the battery out of the >> picture completely. Doing that also eliminates the current draw of the >> battery contactor. >> >> On Sun, Jul 28, 2019 at 6:00 AM Art Zemon wrote: >> >>> I was at AirVenture this week and spent a lot of time in a chair next to >>> my airplane. I took a door off of the BD-4C and people stopped to ask >>> questions. It was great! >>> >>> I got the idea of lighting up the EFIS screens. I have a Jackery 167 >>> watt/hour portable power pack >>> . I borrowed a little Black >>> & Decker 2A battery charger/maintainer >>> . >>> I hooked it up to the airplane and powered it from the 110V inverted on the >>> power pack. That was all good and it gave me a few hours of power with the >>> watt meter on the power supply reading around 30 watts. >>> >>> Running the 110V inverter used 4 watts and a bunch of the battery >>> maintainer's energy was being dissipated as heat. >>> >>> My power supply also has a 12V DC output which measures 13.3V with no >>> load. Could I have hooked that output to the airplane instead of the >>> battery maintainer, without damaging the battery? >>> >> > > -- > https://CheerfulCurmudgeon.com/ > > *Love the stranger for you yourselves were strangers in Egypt. *Deut. > 10:19 > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.