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  #1  
Unread 10-06-20, 10:05 AM
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Hank, I know you have an older model 337 that is likely different, but the newer models don't use "D" batteries. Speaking for my 1978 P337H, there are 4 "C" batteries.

I did a search and found no good photos of the battery location, only some very dark, blurry attempts that I felt could be improved upon.

A site like this will often have several threads on one subject, but by reading them all, one can gain a unique perspective from each OP, resulting in a better overall understanding for the reader/member.

Cheers!
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  #2  
Unread 12-14-20, 05:26 PM
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Do modern alternators still need standby 'batteries' to restart?

Inquiring minds would like to know...
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  #3  
Unread 12-14-20, 07:22 PM
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Quote:
Originally Posted by n86121 View Post
Inquiring minds would like to know...
Yes they do.
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  #4  
Unread 12-14-20, 10:06 PM
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Hmmmm...

Haven’t seen anything like that in cars or boats.

Is it to recover from a situation of zero battery voltage available in flight?
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  #5  
Unread 12-15-20, 07:11 PM
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Actually, cars and boats are exactly the same. Their alternators will not make power without "exciting the field" which requires electricity from their main batteries. If you lose your electrical system in one of those, its not a big deal, safety-wise at least. At little different in aircraft flying hard IFR, as these were built to do.
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