battery

[Learjetter]

Update PIREP on Concorde RG24-16

I installed a new RG24-16 in Sep 2020, and it’s been on the Concorde battery minder whenever she’s in the hangar.

Tuesday morning hangar temps in the 40s, and got an initial no-start and VM showed 22v. 2nd attempt got engines started. On landing, she showed 24.6 on VM.

Friday, after three days on the ramp at the out-base (not on charger) with temps in the 30s, she showed 21v and no start. Had to use GPU to start up.

Landed after a 1.5 (day, VMC) and she showed 24.5v.

I’m thinking I got 4 years worry-free from the RG24-16, and it’s time to replace.

[Kim Geyer]

Go to Concordes web page and get the procedure for a conditioning charge or a deep recovery discharge. I’ve done them and have brought a battery back to passing it’s cap test.
You will need a constant current charger.

[White Lightning]

Hello everyone, I am a new member to the forum as I am a new owner to a 1963 C336 N480WL (hence "White Lightning"). The previous owner unfortunately is suffering dementia so I am not able to ascertain the reason to the following question...
This aircraft has TWO battery boxes (one on the pilot side - factory location, and another on the co-pilot side - above the fuel filter) and the positive & negative battery cables have been wired in series so I am "assuming" that there were 2 12v batteries (since no battery was in either box nor do these boxes allow a 24v battery to fit yet the dimensions fit a 12v battery).
Anyone ever heard that Cessna did a 2x12v from factory option? Any excellent reason to have it this way (I don't like the idea or expense of buying 2 batteries nor the issues caused with potentially imbalanced batteries/charging)?

I would appreciate the collective thoughts and wisdom from this group!

p.s. Having owned many aircraft since 1990s, I have enjoyed amazing results from Concorde batteries vs the Gill counterpart. It gets even better when you choose to utilize the specific BatteryMinder made for Concorde!

[mshac]

I can't speak to the 337 of 1963, but my 1961 310 used two 12 volt batteries from the factory to create a 24 volt system. They were both in the same battery box though.