---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Fri 04/11/14: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:46 AM - Re: EarthX lithium (user9253) 2. 06:31 AM - Re: Re: EarthX lithium (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 04:46:18 AM PST US Subject: AeroElectric-List: Re: EarthX lithium From: "user9253" There was a recent comparison of a LiFePo battery versus Lead Acid and the test results posted in a graph on VansAirforce. http://www.vansairforce.com/community/showthread.php?t=111788 It seems that the actual Amp Hour rating of the LiFePo is only half of the advertised rating. Even so, a 36 amp hour LiFePo provides almost the same endurance as a PC680 at less than half of the weight. The author intends to install the LiFePo in his RV-8A. It will be interesting to see if he is satisfied with this battery a few years from now. Joe -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=421907#421907 ________________________________ Message 2 _____________________________________ Time: 06:31:30 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Re: EarthX lithium At 06:45 AM 4/11/2014, you wrote: > >There was a recent comparison of a LiFePo battery versus Lead Acid >and the test results posted in a graph on VansAirforce. >http://www.vansairforce.com/community/showthread.php?t=111788 >It seems that the actual Amp Hour rating of the LiFePo is only half >of the advertised rating. Even so, a 36 amp hour LiFePo provides >almost the same endurance as a PC680 at less than half of the >weight. The author intends to install the LiFePo in his RV-8A. It >will be interesting to see if he is satisfied with this battery a >few years from now. I missed getting the 4th slot filled on time in the series of articles on batteries for Kitplanes. Spent an extra month attempting to engage a number of suppliers/manufacturers in technical conversations about their products. Only one has been eagerly forthcoming (EarthX) and one other begrudgingly offered tid-bits of the requested data. I've offered to work with EarthX to wordsmith specification and sales literature that would get them more than a casual glance and fewer snickers from a TC airframer. Part IV of the battery articles has been submitted to Paul Dye. I've discovered a lot about the current state of LiPo offerings but my inquiries have generated more questions than answers! As the thread cited above demonstrates, there's a good bit yet to be learned about the lithium battery industry. Encourage folks on the VansAirForce-list to join us here on the AeroElectric- List as well. By the way, that PbEq (lead-acid equivalency) thingy is pure marketing hype. It speaks to battery impedance and ability to crank engines . . . says NOTHING about energy available for battery-only ops. 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.