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Power Boat Forum


battery ground

Anonymous user

17 March 2007 03:08:14

Joined: Unknown | Posts: Unknown

I have 4 batteries aboard a aluminum boat. 2 x 12v batteries for the trolling motor which is connected in series. I have 1x 12v accessory battery and 1x12v starter battery. Should I connect each batteries negative termiinval to the negative terminal of the starter battery i.e make the starter battery the common ground ? Note that the engine is not using a negavitve bus , it is connected directly to the starter battery. Right now all of the devices negative connections are basically terminating at the said battery.
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Re: battery ground

Anonymous user

04 April 2007 04:59:53

Joined: Unknown | Posts: Unknown

Ideally the engine should be the common ground. However if you connect the negatives to the starter battery negative it should be ok, because for the starter to work it has to be connected to both positive and negative.

Peter Eikenberry
New Boatbuilders Home Page
http://newboatbuilders.com
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