---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 12/02/22: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:14 AM - Re: Seeking Battery Box for Group Size BTX20L Battery (Art Zemon) ________________________________ Message 1 _____________________________________ Time: 06:14:47 AM PST US From: Art Zemon Subject: Re: AeroElectric-List: Seeking Battery Box for Group Size BTX20L Battery Bob, You're absolutely right: a tray would be fine. I was sloppy when I wrote my email. I have a high-sided tray now and just want a smaller one. In the BD-4, I have to bolt something tray-ish or box-ish to the supports behind the firewall. There are no horizontal surfaces FWF on which I can rest the battery. -- Art Z. On Thu, Dec 1, 2022 at 11:30 PM Robert L. Nuckolls, III < nuckolls.bob@aeroelectric.com> wrote: > At 05:26 PM 11/30/2022, you wrote: > > Folks, > > I decided to try a cheap AGM battery in my airplane and it is working > great. So well that I want to swap out the large battery box for one that > is smaller and fits more nicely. But my battery ( Super Start Power Sport > Battery > ) > is slightly larger than the EarthX batteries so their boxes won't fit. > > > Why are you putting a box around an SVLA battery? > The need for an enclosure is a legacy requirement > for dealing with fumes and leaks from flooded > batteries of yesteryear. Many were fitted with > drains that would take bubbled-up acidic > water overboard. > > The SVLA battery contains so little liquid that > it's not possible for it to make an acidic > mess in the airplane. > > All you need to do is capture the thing > mechanically. > > http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_1.jpg > http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_2.jpg > http://aeroelectric.com/Pictures/Batteries/Battery_Install_OBrien_3.jpg > > Some years back we did some studies on tensile strength > of straps with Velcro closures. Some 1" wide straps > with 6" of hook-n-loop engagement had a tensile > strength of over 300 pounds. Two of those strips > holding an SVLA battery in a shallow tray would > offer retention in well over a 20G event. Best > yet, you can secure the battery without tools! > > Closing the battery up in a box only adds weight > and cost of ownership, it reduces the battery's > ability to reject heat. > > Bob . . . > > Un impeachable logic: George Carlin asked, "If black boxes > survive crashes, why don't they make the whole airplane > out of that stuff?" > -- My blog: CheerfulCurmudgeon.com *=8B**=8BWrinkles mean you laughed. Grey hair means you cared. Scars mean you lived.* ------------------------------------------------------------------------------------- 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.