Battery charging at idle

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S

Spinner

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Feb 3, 2013
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407
Fluid Motion Model
C-24 C
Non-Fluid Motion Model
(Former RT31) Current 2003 Nordic Tug 42
Vessel Name
Spinner
What is the charging profile at idle (700 rpm) for the 300 HP Volvo engine? Will it charge all batteries?

Thanks
 
Hi Sue,
Here is a graph from Volvo on the D4/D6 alternator
 
RonnieG,

Based on the chart, how does alternator speed relate to Volvo D4-300 engine RPM?
 
Ditto on the question above re correlating alternator revs to engine RPM?. Also, how many amps needed for charging the 6 batteries? Thanks as always
 
Amps required for charging depend on the condition of the batteries. We blew the voltage regulator in our alternator because all six batteries were dead due to my dumb ...... er, error. So battery condition is crucial. I should have caught on when the charger fuse blew but no, I just had to use my spare to jump start the engine and then blew the alternator too. I always learn the hard way!

Pat
Ladybug, Too
 
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