Good evening all,

A new one on me, my batteries no longer appear to be fully charging via the 
alternator, while they do fully charge via shore power.   Specifically, the 
(new) start battery sees only 12.56v while the engine is running, this is not 
sufficient to close the ACR, and the house bank (2 ea, also new, group 31 @ 
130a/h ea).  therefore receives no charge at all.   Surprise!
I believe this means the stock Hitachi 55a alternator is failing.   
Any thoughts on this and any recommendations on a replacement alternator?   

Thanks!  Dave.

Windstar, 33-2 with yanmar 2gm20

Sent from my iPad

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