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  #1  
Old 01-09-2020, 06:39 PM
seagull seagull is offline
 
Join Date: Dec 2019
Location: San Bernardino
Posts: 12
Default replacing battery with Earth-x

My -12 currently has an Odyssey PC680 battery. It is coming up on 5 yrs, and a bit over 400 hrs. The voltage is 12.2V after sitting a few days. I need to run some tests on it but think it is close to it's end of life.
I am considering getting a EarthX Lithium and was wondering if either the ETX680 or the ETX680C are a direct fit. Do I need to change the battery box also?
Anyone with experience changing over?
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  #2  
Old 01-09-2020, 06:53 PM
NinerBikes NinerBikes is offline
 
Join Date: Dec 2018
Location: Granada Hills
Posts: 454
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Pull your battery, and charge it up with a 12v battery charger for 24 hrs. that will put out 14.8V.

Take it off the charger and take a voltage reading. Should be initially 13.1 to 13.3 volts with a surface charge. Check it quickly, every day, same time of day during the week, 7 days straight.

You should not drop below 12.80 V in 7 days.
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  #3  
Old 01-09-2020, 08:39 PM
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scrollF4 scrollF4 is offline
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Join Date: Jan 2010
Location: Flower Mound, TX
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Quote:
Originally Posted by seagull View Post
My -12 currently has an Odyssey PC680 battery. It is coming up on 5 yrs, and a bit over 400 hrs. The voltage is 12.2V after sitting a few days. I need to run some tests on it but think it is close to it's end of life.
I am considering getting a EarthX Lithium and was wondering if either the ETX680 or the ETX680C are a direct fit. Do I need to change the battery box also?
Anyone with experience changing over?
Gull,
To answer your question, I changed from the PC680 to EarthX several years ago. No, it is not a direct fit: The dimensions are not the same, but I was able to modify my existing Vans box to fit the EarthX. I have since changed over to their custom-fit box with the bracket on top to hold a blast tube for battery cooling, and recommend you go ahead and take this route:
https://earthxbatteries.com/shop/the...0-900-vnt-1200

Here's the normal non-thermal box for ETX-680:
https://earthxbatteries.com/shop/aluminum-battery-box

You will absolutely love this battery.
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Sid "Scroll" Mayeux, Col, USAF (ret)
52F NW Regional/Aero Valley Airport, Roanoke TX (home of DR's Van Cave)
"KELLI GIRL" N260KM RV-7A tipper
Catch her on YouTube's "Because I Fly!" channel

Proud and grateful 2020 -=VAF=- Contributor
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  #4  
Old 01-09-2020, 11:52 PM
seagull seagull is offline
 
Join Date: Dec 2019
Location: San Bernardino
Posts: 12
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Quote:
Originally Posted by scrollF4 View Post
Gull,
To answer your question, I changed from the PC680 to EarthX several years ago. No, it is not a direct fit: The dimensions are not the same, but I was able to modify my existing Vans box to fit the EarthX. I have since changed over to their custom-fit box with the bracket on top to hold a blast tube for battery cooling, and recommend you go ahead and take this route:
https://earthxbatteries.com/shop/the...0-900-vnt-1200

Here's the normal non-thermal box for ETX-680:
https://earthxbatteries.com/shop/aluminum-battery-box

You will absolutely love this battery.
scroll,
I am sure I will like the battery, the specs are much better than the Odyssey.
Was your application a -12 with the Rotax?

Your 7A with YIO-360M1B may run hotter cowl temps than the 12.

I read Earthx is OEM for the RV-12is, if this is correct there is a Van's battery box or cooling system designed for it. I have the 912ULS, it should produce about the same cowl temps.

Did you connect the battery monitor wire to the supplied LED or to a Dynon input?

ninerbikes,
There is no question the battery is weak, after a full peak charge it reads 12.2V no load. Five years is a long life for one of these batteries considering the use and environment. I am being proactive before it leaves me stranded.
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  #5  
Old 01-10-2020, 03:28 AM
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scrollF4 scrollF4 is offline
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Good points, I had not considered the RV-12 application and donít know the answers. Give Kathy a call at EarthX: I bet she knows.

I hard-wired the LED to my panel, because I donít want some EFIS failure to hide a possible problem. The battery light is independent on my airplane.
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Sid "Scroll" Mayeux, Col, USAF (ret)
52F NW Regional/Aero Valley Airport, Roanoke TX (home of DR's Van Cave)
"KELLI GIRL" N260KM RV-7A tipper
Catch her on YouTube's "Because I Fly!" channel

Proud and grateful 2020 -=VAF=- Contributor
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  #6  
Old 01-10-2020, 05:37 AM
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Plummit Plummit is offline
 
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Location: SoCal
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Quote:
Originally Posted by seagull View Post
My -12 currently has an Odyssey PC680 battery. It is coming up on 5 yrs, and a bit over 400 hrs. The voltage is 12.2V after sitting a few days. I need to run some tests on it but think it is close to it's end of life.
I am considering getting a EarthX Lithium and was wondering if either the ETX680 or the ETX680C are a direct fit. Do I need to change the battery box also?
Anyone with experience changing over?
What don't you like about the Odyssey battery? You are in the luxurious position of replacing a good quality battery on your time, at your leisure, before you have a failure. What are you trying to improve, the 5-year life? The reliability? I would (and did) replace my Odyssey with another Odyssey when it was time.

Just don't buy from Spruce unless you know what you are getting. They sold me a 925 Odyssey that was a year old according to the date code on the battery. They only had one in stock and I had possibly damaged my 3 year old 925 by leaving the master on so I changed it. You just can't beat the price point and reliability of the Odyssey.

-Marc
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Last edited by Plummit : 01-11-2020 at 07:24 PM.
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  #7  
Old 01-10-2020, 05:39 AM
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Piper J3 Piper J3 is offline
 
Join Date: Nov 2014
Location: Hinckley, Ohio
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Quote:
Originally Posted by seagull View Post
I read Earthx is OEM for the RV-12is, if this is correct there is a Van's battery box or cooling system designed for it. I have the 912ULS, it should produce about the same cowl temps.
This may not be the case. Legacy RV-12 is tightly cowled and 12iS cowling has louvers for added ventilation. Biggest concern might be on the ground when powered off. Legacy retains heat without adequate ventilation. When I "park" I open the oil door to let heat escape...
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Jim Stricker
Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 526

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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  #8  
Old 01-10-2020, 07:09 AM
von_flyer von_flyer is offline
 
Join Date: Oct 2014
Location: Metamora, Michigan
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Just a datum point. I am currently replacing my Odyssey PC960 with an Odyssey PC960. Battery is 13.5 years in service. It doesn't owe me anything.

New Odyssey has a date code of 19333. Can I assume that means it was manufactured on the 333rd day of 2019?
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  #9  
Old 01-10-2020, 07:58 AM
seagull seagull is offline
 
Join Date: Dec 2019
Location: San Bernardino
Posts: 12
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Quote:
Originally Posted by Plummit View Post
What don't you like about the Odyssey battery?
-Marc
There is nothing not to like about the Odyssey, but the Earthx will take 10 pounds off the plane, that is significant on a LSA.
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  #10  
Old 01-10-2020, 08:50 AM
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Piper J3 Piper J3 is offline
 
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Location: Hinckley, Ohio
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Quote:
Originally Posted by von_flyer View Post
New Odyssey has a date code of 19333. Can I assume that means it was manufactured on the 333rd day of 2019?
I wouldn't assume anything about a printed date code. Manufacturers often use internal code reference which consumer is not privy too.
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Jim Stricker
Hinckley, Ohio (1OA2)
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2007
80 hrs Flying Aeronca Chief 11AC N86203
1130 hrs Flying 46 Piper J-3 Cub N6841H
Bought Flying RV-12 #120058 Oct 2015 with 48TT - Hobbs now 526

LSRM-A Certificate 2016 for RV-12 N633CM
Special Thanks... EJ Trucks - USN Crew Chief A-4 Skyhawk
MJ Stricker (Father & CFI) - USAAF 1st Lt. Captain B-17H
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