New Battery Recommendation

[carusoam]

Great follow-up Wafi!

Best regards,

-a-

[jaylw314]

On 2/6/2022 at 5:51 AM, A64Pilot said:

Don’t put ANY battery in your airplane that can leak acid, because eventually it will, and battery acid isn’t kind to airframes.

An AGM can’t leak as the mat isn’t fully saturated.

I have heard a couple anecdotes of AGM's leaking a small amount of acid.  If they are overcharged for long enough, the battery can vent water, and that water can carry out a little bit of acid.  Not a huge uncontrolled release, mind you, but enough to make sure you check your battery box and clean out any residue that might be there

[carusoam]

A reminder to know where the battery vent is plumbed to…

My sealed batteries look surprisingly like my unsealed batteries used to….  Using the same vent hose connected at the top.  PVC tube goes down below………..

The Ovation didn’t get a battery box… it is held in place by two threaded rods….holding the battery between the tray and a fancy aluminum plate…

 

PP thoughts only…

Best regards,

-a-

 

[EricJ]

The battery box is there to contain any leaking.    It's an effective way to handle battery leaks but it has to be maintained and checked for holes, etc.   It's pretty simple.

[skykrawler]

Posting a data  point on this old thread....

Just replaced Concorde RG-35a installed May 2016 with a new RG-35AXC  ~$490 from Spruce.  Always kept on a battery tender.   Battery served almost 8 years, although I realized it had been getting weaker and replaced it proactively.   It for sure failed the cap check.

As a further note, this battery was run badly flat in 2017 due to inadvertent cabin light incident.

[Shadrach]

2 hours ago, skykrawler said:

Posting a data  point on this old thread....

Just replaced Concorde RG-35a installed May 2016 with a new RG-35AGX  ~$490 from Spruce.  Always kept on a battery tender.   Battery served almost 8 years, although I realized it had been getting weaker and replaced it proactively.   It for sure failed the cap check.

As a further note, this battery was run badly flat in 2017 due to inadvertent cabin light incident.

I just replaced a 13 year old RG-35A that failed a capacity check this year (76%).  I don’t expect to see that kind of life from the next one. I was tempted by the AXC (AGX?) but didn’t feel like revising W&B for 2.5lbs.

[DCarlton]

1 hour ago, Shadrach said:

I just replaced a 13 year old RG-35A that failed a capacity check this year (76%).  I don’t expect to see that kind of life from the next one. I was tempted by the AXC (AGX?) but didn’t feel like revising W&B for 2.5lbs.

I talked to the Concorde rep at the Buckeye Air Fair.  Asked if the 35A and 35AXC Platinum were made on the same production line with the same quality and same materials.  Yes they are.  One just has more material for a bit more capacity.  I recently replaced a AXC with an A.  Sometimes it's easier to go with what's in stock.  13 years is crazy good service life.  

[Shadrach]

22 minutes ago, DCarlton said:

I talked to the Concorde rep at the Buckeye Air Fair.  Asked if the 35A and 35AXC Platinum were made on the same production line with the same quality and same materials.  Yes they are.  One just has more material for a bit more capacity.  I recently replaced a AXC with an A.  Sometimes it's easier to go with what's in stock.  13 years is crazy good service life.  

Agreed. It was not on a tender for the first 3 years. After that it lived on one until removed from service after the cap check. Still started the plane just fine but noticed it was losing capacity. I expected it to test lower that 76%. I used the local battery mart to test it so the methodology could have been flawed. It now serves as a 12v power source for troubleshooting 12V electronics that have been removed (instrument lighting and such).