master left on during annual, battery dead.

[rbridges]

I know we're all human and crap happens.  Anyway, someone was fixing my DG and noticed the master was left on.  Must have happened during my annual last week.  I told him to reconnect the trickle charge cables.  Think it will revive it?  It's a 3-4 year old Concorde that was working flawlessly.

[wishboneash]

Shouldn't be a problem.. Had similar issue once last year.

[rbridges]

battery has worked well since?  I imagine it's only been dead a day or two, but I hope it recovers.  They're going for nearly $300 now.  

[Hank]

Oooooohhh . . . Hope this works for you. II've not done this since putting in the Concorde.

[RobertGary1]

Trickle it. Don't just jump it an pump it with 80-10amps.

[rbridges]

Trickle it. Don't just jump it an pump it with 80-10amps.

 

thanks.  that's what is in the hangar.  I believe it's a 1A.

[orionflt]

I did the same to mine earlier this yr, battery was only 2 yrs old. the bad new it did not recover but my master was on for longer then a few days. 

 

Brian

[Schinderhannes]

The Concorde battery is an AGM battery and requires different charger settings than a flooded battery.  Check your charger if it has the correct settings for AGM.  I had the same issue earlier this year, and charging the battery with a Marine charger for AGM batteries revived it.  Nevertheless the deep discharge with reduce the lifespan. 

[Alan Fox]

If the battery was good before it was drained , it should be fine,  If it is left on for many days , this could make the plates brittle and no longer accept a charge.... They say that a full cycle is good for the battery ,

[RobertGary1]

If you talk to the battery manufactures they will go on and on about how the Specific Gravity of aircraft batteries are unique and therefor you need to buy an aircraft charger to charge it. Its likely true that with a car charger, the charger will cut off a bit before full charge. But having done it many times I can attest that its more than enough to sling the prop around. There is no way you'll notice the difference in what charger was used. 

 

-Robrt

[Alan Fox]

I believe that a wet cell is 2.2 volts , so technically both car and aircraft batterys that are 12 or 14 volt , are actually 13.2 volt batteries regardless of what the label says (12 or 14 volt)

[Releew]

I had a cabin light left on dim.....twice!!!  Trickle (deep cycle) charged and the battery was fine.

 

 

Rick

[Will W]

It will never be exactly the same after that. It won't be like new after 3-4 years anyway. Won't be much longer now before you replace the battery just from it's age.

[N33GG]

Don't worry, it will only fail completely when it is most inconvenient! 

[M20F]

http://www.avweb.com/news/savvyaviator/191348-1.html

[wishboneash]

battery has worked well since?  I imagine it's only been dead a day or two, but I hope it recovers.  They're going for nearly $300 now.  

 

Battery has been fine since that episode. I thought I had lost it too.

[Bravoman]

I know we're all human and crap happens.  Anyway, someone was fixing my DG and noticed the master was left on.  Must have happened during my annual last week.  I told him to reconnect the trickle charge cables.  Think it will revive it?  It's a 3-4 year old Concorde that was working flawlessly.

Rob, speak for yourself, not everybody on this forum is human!

[steingar]

Did that once when a gyro was out for repair.  Just re-charged the battery and it worked fine.

[DrBill]

somewhat related... I just refurbished a Baja go-Cart for a neighbor.  The battery was absloutely dry when I got it so I filled it with fresh rain water and put it on trickle charge (3a max) for 14 days. it came back and starts the cart like a new battery... I would have never expected it to work but wonders do happen.

Bill

 

[rbridges]

Thanks for all the advice. Charged it for a few days and it seems to be doing okay. Keeping fingers crossed. 

[mike_elliott]

Robert, your donation to the Mooney Summit will give you a good shot at winning a new Concorde battery! Hope it happens for you!

[mike_elliott]

Will do, Jim!

[rbridges]

Mike,

Since I will only be at the open house, please give my tickets to Rob.  It can only help his odds of winning.

Thanks!

Jim

 

 

Jim, thanks a lot!  I won't be getting there until Saturday morning.  I hate that I'll miss thanking you in person.

Edited September 16, 2015 by rbridges

[mike_elliott]

Ok guys,,,,Robert you need to find a proxy for all those tickets...(no, I already am one for someone)

 

[laytonl]

I've accidentally discharge my Concorde twice.  It has come back both times with no issue.  I use a very low trickle charge using a fancy constant current charger.  See the attached photo.  Lee