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#1
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Are there any Lithium Ion batteries PMA'd for the 337? They are taking over in the Bonanza world. Half the size and weight, far more CCA. Would love to have a LI option for our planes! Comes in its own box too, so get rid of that ridiculously expensive battery box, especially the $1000+ plastic battery box in late model 337s.
https://www.truebluepowerusa.com/pro...nanza-a36-stc/ I may install one via 337 if no PMA solution is available. (I guess 337's for 337's is a tired joke by now on this site  )Last edited by mshac : 09-04-20 at 09:06 AM. 
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#2
09-04-20, 10:25 AM
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Quote:
Maybe I'll just stick with a Concorde RG 24-16.
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#3
09-04-20, 10:29 AM
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My choice has been Concorde for the last 20 years. I have paid the extra for the platinum series and haven't been disappointed.
I change my battery every 3 years no questions asked. A lot of guys say if it starts it's good but that is not true. I am a serious flyer and routinely fly IFR, over lakes (big ones) and night so I have no problem with buying new and staying fresh. It's the one time you loose charging that will make a believer out of you. I also use a Battery Minder made specifically for the Concorde battery. It stays on my plane whenever it's in the hangar
__________________
Herb R Harney 1968 337C Flying the same Skymaster for 47 years
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#4
09-04-20, 10:39 AM
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That can't be right. I must have linked to the wrong product. I'll check in the Bonanza forum I belong to and get the right info. The cheap Bonanza owners I know that have LI batteries would never spend that kind of money on a battery!
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#5
09-04-20, 01:04 PM
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How are you connecting your battery minder? Are you popping the cowl off and opening up the battery box to attach alligator clips, or is it possible to hook something like this up to the GPU port?
https://www.aircraftspruce.ca/pages/...jumperplug.php
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#7
09-04-20, 02:58 PM
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Battery Minder
I installed the interface kit on my engine baffle - accessible through the oil dipstick door on the front engine. Simple log book entry.
https://www.batteryminders.com/batte...fied-aircraft/ Jeff Last edited by JAG : 09-04-20 at 03:01 PM.
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#8
12-07-24, 08:13 AM
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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.
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#9
12-07-24, 07:08 PM
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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.
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