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Old 01-07-2013, 07:27   #16
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Re: battery for bow thruster

A friend of mine, another installer who does quite a bit of bow thruster work, insists on placing an additional battery, in parallel, near the thruster and windlass. His belief is that the surface charge of the battery is more available for the short duration of need, and the recharging, with the 4/0 cable then is sufficient. I tend to keep all the batteries in a bank together, but on reflection, that may not be necessary. I'll leave it to the electrical engineers to argue the merits of that. The legs from positive and negative posts are unequal, but the juice is the same.

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Old 02-07-2013, 13:54   #17
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Re: battery for bow thruster

Thanks to all, I have a separate battery for the bow thruster and windlass located in the bow for short cable run. Am looking at various batteries now, Sears too.
Thanks again.
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Old 02-07-2013, 13:58   #18
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Re: battery for bow thruster

I'm on my 3rd boat with a bowthruster and they all had Odyssey batteries installed, so that is what I would recommend (with as short a cable run as possible).
-Zanshin (SV Zanshin)
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Old 03-07-2013, 03:16   #19
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Re: battery for bow thruster

With the bow thurster batteries in the bow how are you hooking up the 4/0 existing wire for charging. Are you leaving it on the battery in the stern, or are you hooking it up to a battery charger?
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Old 03-07-2013, 05:33   #20
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Re: battery for bow thruster

WE have 2x4D's providing 24V for our bow thruster motor. The batteries are within 6 ft of the thruster and fed by a double battery charger directly adjacent to the batteries. Given the very large power draw when using the thruster, you need to keep the battery cables as short as practical.

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