Today's Message Index:
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1. 07:47 AM - Re: PC 680 (Bill Judge)
2. 06:00 PM - Re: PC 680 (speedy11@aol.com)
Message 1
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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
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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
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