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  #1  
Old 01-28-2021, 03:43 PM
UH1CW2 UH1CW2 is offline
 
Join Date: Jun 2014
Location: Lenox, Michigan
Posts: 201
Default Battery Decisions

I am running a 320 Lycoming with 9:1 pistons. In the last 12 years I have gone through 3 Odyssey 920's and 2 Concord 35AXC. The batteries last about 2.2 years each. I just purchased a EarthX 900 battery and the Optima Charger. Is there a better choice for batteries that may last longer than 3 years? I am hoping the earthX will last at least 4 years due to the higher cost.

I should mention that 5 of those years were in Mississippi and the other 7 in Michigan. So it doesn't seem to matter what the climate is like. Who has had good luck with battery's and what types did you use?
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US Army 2nd/17th Air Cav 101st Airborn
A&P, Commercial & Instrument Pilot
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Helicopters (UH1's, AH1's, S76, H269)
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  #2  
Old 01-28-2021, 04:24 PM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is offline
 
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 2,908
Default

Considering the rate you are going through batteries, I suggest you have a problem with your charging system, how you use a battery charger, or both.

I run two PC-625 batteries. I replace one every three years (so the batteries go for six years). At six years the pulled battery goes into the lawn tractor or a neighbor’s John Deer for a few more years. I never use a battery charger, battery minder, battery optimizer or any other such charging device.

For the few times I do hangar flying I connect a 30 amp regulated power supply to the battery and run the system at the same 14.2vdc that the alternator puts out, and disconnect it when done. On the one occasion that I abused a battery (left a master on) I replaced it. Once a battery is abused it is now of unknown reserve capacity - so not allowed in my plane.

Carl
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  #3  
Old 01-28-2021, 08:39 PM
Mtherr Mtherr is offline
 
Join Date: Nov 2020
Location: Montréal, Canada
Posts: 45
Default

I had great experience with a Yuasa GYZ32L battery in another aircraft. I will soon switch to the GYZ20HL in my RV6. 320CCA should be plenty. About 15 lbs.
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New owner of RV6A "Second Wind" C-GERZ (born N242UL)
O-360 A1A, Sensenich FP prop
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  #4  
Old 01-29-2021, 07:55 AM
ty1295 ty1295 is offline
 
Join Date: Aug 2011
Location: Jeffersonville, IN
Posts: 444
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Just about all the RV guys at our airport have switched over to Apex batteries that are $40 each. The ones that went from PC680 were impressed. AT $40 a battery I planned to just put a new one in every annual but have 2 years on 1st one so far without any issues.

I do keep spares on the shelf for everyone, but so far none of us have been let down at all.
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RV9A First Flight 9/30/19
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  #5  
Old 01-29-2021, 10:40 AM
abwaldal@gmail.com abwaldal@gmail.com is online now
 
Join Date: Jan 2017
Location: Battle Ground WA
Posts: 179
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Friend of mine across the taxiway is running two of the Lippo's and had one go dead after 3 months. I mean DEAD fast. Not like a lead acid battery that usually slowly dies. It was dead in minutes. He's running dual electronic ignitions. Not good. Those things are quite spendy to die in minutes. Internal short he said.
Something to consider. I'm 2 running lead acid. One PC680 and a small Yausu for back up.
Art
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  #6  
Old 01-29-2021, 11:09 AM
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MacCool MacCool is offline
 
Join Date: Aug 2020
Location: central Minnesota
Posts: 489
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Quote:
Originally Posted by ty1295 View Post
Just about all the RV guys at our airport have switched over to Apex batteries that are $40 each. The ones that went from PC680 were impressed. AT $40 a battery I planned to just put a new one in every annual but have 2 years on 1st one so far without any issues.

I do keep spares on the shelf for everyone, but so far none of us have been let down at all.
Which battery is that?

Last edited by MacCool : 01-29-2021 at 11:12 AM.
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  #7  
Old 01-29-2021, 01:17 PM
Sam Buchanan's Avatar
Sam Buchanan Sam Buchanan is offline
been here awhile
 
Join Date: Dec 2004
Location: North Alabama
Posts: 4,396
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Quote:
Originally Posted by MacCool View Post
Which battery is that?
https://www.apexbattery.com/apex-bat...h-battery.html

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  #8  
Old 01-29-2021, 03:54 PM
N427EF N427EF is offline
 
Join Date: Oct 2005
Posts: 1,529
Default Plus one for "Apex"

Those sealed lead acid batteries come in different flavors, such as Panasonic, Universal, and many others. I've used these in my RV-8 and use 2 of them in my RV-10. They are available at ACE hardware for $49 or you can get them from Amazon if you want to support a small business killer. Type in 18amp hour sealed lead acid battery and a schmorgasboard of choices will come up.
In any case, its the same old technology no matter which brand you choose.
Mine last 5 years and are still good for another five in various vehicles.
BTW: One is enough to start an IO 540 at 8:1 comp., I just happen to like 2 batteries on board.
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  #9  
Old 02-09-2021, 05:56 AM
Mtherr Mtherr is offline
 
Join Date: Nov 2020
Location: Montréal, Canada
Posts: 45
Default Lighter battery - more constraints!

I removed the DCM0035 battery from my RV6A last weekend. This is not a battery designed for starting an engine. It’s weight: 24 lbs.

I installed a WPX20H-BS (similar to Yuasa YTX-20-BS) which weight 14 lbs... My empty weight is now 10 lbs less with that change.

The engine now starts much better with the 310 CCA battery. However, I ran the W&B calculations and in the most rear scenario, I am now penalized by 20 lbs in the baggage compartment; seems there is a downside to weight reduction!
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Michel Therrien
New owner of RV6A "Second Wind" C-GERZ (born N242UL)
O-360 A1A, Sensenich FP prop
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  #10  
Old 02-09-2021, 08:31 AM
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Raymo Raymo is offline
 
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 2,314
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Be sure to get an EarthX approved charger and you'll be quite happy with the weight savings. You could have stepped down to the 680 or 680C and been just as happy with the cranking power.

If mounted inside, be sure to mount it in their vented case.
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RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
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