Join Date: Mar 2006
Location: New England
Thanked 9 Times in 9 Posts
Rep Power: 13
Using 12VDC off of one battery in a 24VDC system is a really bad idea. IT will cause the batteries to age differently and lead to other issues in the long run.
Your two options are:
1) Set the boat up with a 24 VDC system and use a DC-to-DC converter to provide 12 VDC where necessary.
2) Set the boat up with a 12 VDC system and use a DC-to-DC converter to provide 24 VDC where necessary.
However, given the amperage of a windlass and starter motor, it might be wise to use a third option, which is to have both a 24 VDC and a 12 VDC system on the boat, with separate panels, charging, etc.
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You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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