EAA493 Mailing List: Re: Which Battery Brand is the better buy?

[Don Smucker (dws_jmc]

I am a big believer in AGM batteries, basically the same as the Concorde (RG). I put a new AGM in the Velocity.  Unfortunately, it will be some time before I can report how well it performs in that bird........

Don S

On Thursday, July 9, 2015 6:31 AM, LeRoy Anderson <landers [at] copper.net> wrote:

I put a Concorde battery in my old Cherokee and it was four years old when it went down in Corsicana.  The new Cherokee has a Concorde and it is almost five years old.  I do a full discharge capacity test on it at every annual and it is just as good as new, so far.  The battery box stays clean as a whistle between annuals.  I vote for the Concorde.  They do warn that you should not use your old car charger to ensure longevity and I would check your alternator voltage to make sure it does not get over or under charged in the plane.  That's my experience up to now.

LeRoy

Sent from my iPad

On Jul 9, 2015, at 12:25 AM, Don Treadwell <donald [at] treadwellphotography.com> wrote:

I need to replace a Gill G-25S which is less than two years old.  They have been discontinued and replaced with a new model Gill sealed battery.

I checked various forums on the internet and found that the majority of owners think that the more expensive Concorde battery is actually cheaper in the long run because it lasts longer and may actually improve with age.

http://csobeech.com/files/BatteryConsumerArticle.pdf

The Aviation Consumer article found that in their testing that the Concorde battery was more robust, holding up well to abuse like overcharging, and actually improved its capacity as it went through charging cycles.  Some owners did have Concorde batteries fail in less than 2 years (around 22%) while Gill battery owners had a failure rate of 78% in less than 2 years.

Here is the same article as published in the Aviation Consumer with additional surveys attached.

http://www.skytecair.com/images/P1/BatteryComparison.pdf

Gill used to be the standard in wet cell batteries and those batteries still hold up well if you can stand replacing battery boxes every time one spills sulfuric acid.

What has your experience been with batteries?

Don

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