---------------------------------------------------------- RV8-List Digest Archive --- Total Messages Posted Tue 03/13/18: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:47 AM - Re: PC 680 (Bill Judge) 2. 06:00 PM - Re: PC 680 (speedy11@aol.com) ________________________________ Message 1 _____________________________________ Time: 07:47:26 AM PST US From: Bill Judge Subject: Re: RV8-List: PC 680 I think that there are two things that prematurely kill the Odssey batteries: 1. not charging at high enough of a voltage 2. Slow drains while sitting I've got my voltage regulated at 14.4 volts and when the battery disconnects the only parasitic load is the Dynon keep alive. I've got two PC625s, one for cranking, one for backup. I do the same as a lot of guys, add a new one to the emergency position every 2 years(thinking about three) and make the old emergency one the new cranking battery. Batteries are substantially more reliable if you avoid cranking on them. I took year off work to travel and the plane sat for 9 months with a 2 year old battery, I came back and it started right up with no charging. Bill Judge RV-8 N84WJ 1360 hrs http://rv-8.blogspot.com/ ________________________________ Message 2 _____________________________________ Time: 06:00:07 PM PST US From: speedy11@aol.com Subject: RV8-List: Re: PC 680 Ed, I agree - a very good discussion. I concur with all of the comments. I started out replacing 1 battery (two on board) every two years. Cap checks showed the old battery to still be very capable - can't remember the exact numbers - I had the guys in my FBO check it for me. I changed to 4 year swapout and I have had virtually no issues even with occasional long sit times. However, I am replacing the entire panel - EFIS, txpndr, radios, AP - and the batteries have been sitting unused and uncharged for 6 months. So, as part of the overall upgrade, I decided to install EarthX LiFePo4 batteries. I'm having to make new battery mounts since the EarthX have slightly different dimensions. It is always something, isn't it? I'll send an update later in the year when I have some experience with the new batteries. One thing is for sure, they are much lighter than the PC680s. Stan Sutterfield RV-8A ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv8-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV8-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/rv8-list Browse Digests http://www.matronics.com/digest/rv8-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.