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<< Lancair Builders' Mail List >>
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Yes, definitely use RG batteries. They are sold at stores such as
Batteries Plus as alarm system batteries (They call them gel-cell). But
be careful. Their internal resistance is very low (the reason to use
them, it gives far more starting power). Ordinary battery chargers can
fry them (I know, I trashed two.) Using two allows you to set up a dual
bus, redundant system with full crossfeed capability (schematic Z-4 from
the Aeroelectric Connection www.aeroelectric.com).
Ted Noel
Ted is right on here. However, be careful about what you're buying - It's
true that many sellers of batteries don't know what they have. YOU DO NOT
WANT GEL CELL BATTERIES. These batteries actually have higher internal
resistance than wet cells and are heavier than SLA batteries. In my
searches I've found that SLA (sealed lead acid) is the most common
nomenclature of the RG Battery that most purveyors understand. Most do not
know what you mean when you say RG Battery. So be sure it is truly a SLA
type. Better yet, just go to DigiKey on the internet and buy the silly
things for about $42.00 each (12V 17 AH). My info comes from Aeroelectric
also, but I have talked with and read about many satisfied users of these
things. I second Ted's advice on overcharging (B&C Specialty regulators and
Crowbars will help here) and on his tip about Bob Nuckolls at
aeroelectric.com. Subscribe to his publication and you'll get a world of
aviation electrical education for laymen.
Regards,
John Barrett, CEO
Barrett/Garrett Enterprises
PO Box 428
Pt. Hadlock, WA 98339
360 385 1000
"CARBINGE - The world hinges on us!"
LML website: http://www.olsusa.com/Users/Mkaye/maillist.html
Builders' Bookstore: http://www.buildersbooks.com/lancair
Please send your photos and drawings to marvkaye@olsusa.com.
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