---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 08/25/15: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:39 AM - Re: Re: Anything 'unique' about incorporating EarthX? (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 06:39:04 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: Anything 'unique' about incorporating EarthX? At 01:00 PM 8/24/2015, you wrote: > "With a B&C overvoltage protection module (nominal trip voltage of > 16.2 volts), I could have voltage to the battery greater than the > BMS triiger voltage and have loss of battery power supply at the > same time I have no alternator electrical source!" > > I just talked with Kathy at EarthX and mentioned this concern > with the OV protection. I am very near making the decision on > batteries to use on my project also using the B and C regulator > so was very interested in this. She strongly recommended to use one > of the new aircraft specific battery designs, ETX680, ETX900, > or ETX1200, and that these batteries have the OV protection set at > over 19V in order to address this very issue. She said new > batteries also have greater redundancy and battery fault > warning than their other batteries. 19 volts? Hmmm . . . wonder how they arrived at that figure . . . which seems to argue with some widely circulated 'never exceed' numbers that are reputed to trash the battery. It will be interesting to see how the return on investment shakes out for this new direction in battery technologies. When you're selling Apple products, there's a market segment that can be depended on to 'need' whatever new features are offered. That market is a classic demonstration of "Build it and they will come". A market with little incentive to deduce what features really improve performance and/or reduce risk. Speaking of great experiments in "Build it an they will come", there are many thousands of housing and commercial units built and supposedly move-in ready. Multiple complete cities standing empty in another part of the world . . . Emacs! . . . again, a powerful demonstration that encourage folks to understand the economics . . . the return on investment for needs versus wants. I am still mystified as to how it's a 'good thing' to add a wad of transistors to a battery just to achieve a few pounds of weight savings . . . we'll just have to wait and see. Bob . . . ------------------------------------------------------------------------------------- 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.