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One or Two batteries with Single Alternator for Electric A

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nuckolls.bob(at)aeroelect
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Posted: Wed Apr 28, 2010 7:36 pm Post subject: One or Two batteries with Single Alternator for Electric A

At 08:50 AM 4/28/2010, you wrote:

 	  Quote: 	
		  Bob,



Which architecture should I be using for a VFR, day/night, single 

engine dual LSE ignition, single B&C 30 amp alternator and single 

MGL EFIS, radio, transponder, intercom?



My emergency power draw would be 6.7 amps (cruise is 12.34 amps). I 

could use a single battery but would like to have a second smaller 

5-7 amp battery as a backup for the EFIS and one of the LSE ignitions.


	


   Consider Z-13/8 with one 17 a.h. battery. Does

   B&C offer a 30A alternator? LSE recommends two

   batteries for two ignitions. It's a higher cost

   of ownership and heavier system but it will perform

   as advertised.

   Bob . . .



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