---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 07/04/17: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:47 AM - Re: Lightweight rechargeable battery backup unit (BobD) ________________________________ Message 1 _____________________________________ Time: 04:47:25 AM PST US Subject: AeroElectric-List: Re: Lightweight rechargeable battery backup unit From: "BobD" Just as a follow up to the various posts on this and similar threads, here is the schematic of the final wiring diagram I settled on. The switch used incorporates a warning light when the Battery Backup is activated. There are probably cheaper ones than that quoted (but I had a few spares from my old panel, so no cost to me). The Battery Holder is cheap, and fitted into a blank on my panel I had made for a potential Dynon AP at a later date. Obviously, it does not provide a rechargeable option, but I took on board Bob's calculations that if not used in anger, the batteries should be good for 12 months, so test as part of pre-flight checklist, and replace batteries at Annual. It is offered here with absolutely no warranty whatsoever, i.e. use at your own risk. I have yet to have the unit approved by the UK LAA. Thanks to all those who contributed to the thread. -------- Bob Dawson XS TG || 912 ULS || G-NHRJ Read this topic online here: http://forums.matronics.com/viewtopic.php?p=470684#470684 Attachments: http://forums.matronics.com//files/bbu_559.pdf ------------------------------------------------------------------------------------- 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.