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How to disconnect both batteries

Discussion of batteries, chargers, wiring, generators, distribution panels, battery switches, etc.
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Chriskinkade
Posts: 1
Joined: Mon Jul 05, 2021 4:57 pm
Vessel Info: 1990 Wellcraft Monaco 3000

How to disconnect both batteries

Postby Chriskinkade » Mon Jul 05, 2021 5:09 pm

Must I disconnect from shore power to disconnect batteries? I need to have them checked and probably replace them both. Is there a proper way to do this so I don’t cause any issues
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CptBill
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Joined: Fri Sep 07, 2018 6:37 am
Vessel Info: Jester Toy
2002 270 Coastal, Twin Yamaha 4 stroke 250
330Larson Cabrio twin 5.7l EFI V.P duo props
2760 Regal commodore
40' pacemaker flush deck
2855 Bayliner, 25' Marathon aft cabin
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Re: How to disconnect both batteries

Postby CptBill » Tue Jul 06, 2021 11:27 am

You can leave the boat plugged in but turn off the batt. charger. disconnect the negative sides first
Never Ever Ever do anything that test your wife's memory :captain:
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rossjulie
Posts: 1
Joined: Thu Sep 09, 2021 9:09 am
Vessel Info: Buster XL 1994

Re: How to disconnect both batteries

Postby rossjulie » Fri Sep 10, 2021 1:56 am

No need to disconnect from shore power the battery charger should be turned off.And yeah it's advisable to start with -ve poles.
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Bjork
Posts: 1
Joined: Tue Sep 21, 2021 1:39 pm
Vessel Info: Riva Super Aquarama

Re: How to disconnect both batteries

Postby Bjork » Wed Sep 22, 2021 7:22 am

If disconnecting battery terminals, Always disconnect the negative first. This is to avoid an accidental shorting of your tools to the negative metal chassis. But with a switch, you can switch the positive. Much safer.
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