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Battery Voltage during charging

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NealXu View Drop Down
Sub Lieutenant
Sub Lieutenant


Joined: 11 December 2017
Location: New York,USA
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NealXu Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2017 at 17:16
Hi...i am a new user here. I want to know if you have any other charging system apart from the engine and shore power neither of which will be charging when you are sailing. What voltage are you seeing on the built in panel meter when you are getting the alarm also do you have a separate bow thruster battery?



Edited by NealXu - 15 February 2018 at 19:56
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Fendant View Drop Down
Admiral
Admiral


Joined: 03 November 2012
Location: Switzerland
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Points: 1556
Post Options Post Options   Thanks (0) Thanks(0)   Quote Fendant Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2017 at 17:38
Hi Neal,

Yes, I have a separate 90 Ah AGM battery for the bow truster exclusively. It is charged through a Sterling Bat-Bat charger from the 360 Ah service bank.

Apart from my Sterling charger and Shore supply I do not have any other source when underway. I normally use 15%-20% of the battery capacity on a 8 hour sailing day in summer ( fridge, autopilot, instruments, plotter permanently on ).


Frank
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StavrosNZ View Drop Down
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Joined: 24 October 2014
Location: New Zealand
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Post Options Post Options   Thanks (0) Thanks(0)   Quote StavrosNZ Quote  Post ReplyReply Direct Link To This Post Posted: 11 December 2017 at 20:30
Hi Chris,

No idea how its possible to have high voltage with engine stopped unless you have solar panel?

If your battery system is using relay/VSR to separate the batteries then its possible to get voltage overrun if the voltage sense wire from your alternater smart regulator is attached to the house battery instead of the engine battery. Its possible they have wired the regulator as per regulator wiring instructions but failed to take into account VSR. VSR sense and alternator regulator voltage sense must be on same input e.g. start battery if that's where alternator charges first. 
Stephen
2010 H400 #691, Auckland, New Zealand
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