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Go Back   SailNet Community > On Board > Gear & Maintenance > Electrical Systems > Getting ready to add shore power
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Thread: Getting ready to add shore power Reply to Thread
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Topic Review (Newest First)
01-27-2013 12:00 AM
jrophoff
Re: Getting ready to add shore power

Quote:
Originally Posted by mitiempo View Post
Yes, but with such a small output it will take a long, long, long time. Days if the battery is down much.

A battery monitor as an example considers a battery fully charged when the current is less than 2% of bank size. Your charger is smaller than that 2%.
After a day of sailing it typically took no more than a few hours to charge. With that being said the only instrument I am using is my depth sounder. Now with a stereo installed I may need to up my charger to something a little bigger.
01-26-2013 11:51 PM
mitiempo
Re: Getting ready to add shore power

Quote:
Originally Posted by jrophoff View Post

From what I understand a float charger does not actually charge. It keeps a fully charged battery fully charged. The battery charger I have will charge the battery as well as maintain it once it is fully charged.
Yes, but with such a small output it will take a long, long, long time. Days if the battery is down much.

A battery monitor as an example considers a battery fully charged when the current is less than 2% of bank size. Your charger is smaller than that 2%.
01-26-2013 11:13 PM
jrophoff
Re: Getting ready to add shore power

Quote:
Originally Posted by Stu Jackson View Post
Do a Google search on "equalizing wet cell batteries."
I thought about that after I posted...

Quote:
Originally Posted by mitiempo View Post
I wonder what the difference is between bulk and float when the max output of the charger is either .75 amps or 1.5 amps, even if it is a "4" stage charger.
From what I understand a float charger does not actually charge. It keeps a fully charged battery fully charged. The battery charger I have will charge the battery as well as maintain it once it is fully charged.
01-26-2013 01:50 PM
mitiempo
Re: Getting ready to add shore power

I wonder what the difference is between bulk and float when the max output of the charger is either .75 amps or 1.5 amps, even if it is a "4" stage charger.
01-26-2013 01:44 PM
Stu Jackson
Re: Getting ready to add shore power

Do a Google search on "equalizing wet cell batteries."
01-26-2013 10:10 AM
jrophoff
Re: Getting ready to add shore power

Quote:
Originally Posted by chef2sail View Post
A three stage battery charger is the best way to charge your batteries. Also dont forget if you have wet cells to equalize every month or so to desulfate the lead plates.

Dave
I think my charger is a 4 stage. Are you saying my charger is good or bad?

How do you desulfate lead plates?
01-25-2013 11:38 PM
chef2sail
Re: Getting ready to add shore power

Quote:
Originally Posted by jrophoff View Post
This is what I have. Unlike a float charger it is capable of bulk charging too. Since it charges at a slower rate, the battery stays cool, ultimately prolonging my batteries life:

Battery Tender® Junior 12V @ 0.75A - Batterytender.com

It does a good job, and since the only thing that I run off the battery is my depth finder and running lights (cabin lights are LED and use their own batteries), I don't use too much battery. Especially since all my sailing is done in the day time. After a long day of sailing I am down to 90-95%. Now that I have a new motor that charges the battery as well I should be in good standing.

I am adding a stereo this year. That may push me into purchasing a larger battery charger.
A three stage battery charger is the best way to charge your batteries. Also dont forget if you have wet cells to equalize every month or so to desulfate the lead plates.

Dave
01-25-2013 10:27 PM
jrophoff
Re: Getting ready to add shore power

Quote:
Originally Posted by btrayfors View Post
I agree with Tap's comments.

The blue color is confusing, though, as is the existing wiring on the panel (black/hot wire going to one of the busses).

I'd start by removing all the old wiring from the breakers and busses. Then, start afresh using the proper wire coloring...much less confusing.

US single-phase AC wire coloring:

black = hot
white = neutral
green = grounding



Bill
Yea I agree, it all needs to be redone. The program I used to draw the lines did not have the proper colors. I used bright colors so it would stand out.
01-25-2013 06:20 PM
btrayfors
Re: Getting ready to add shore power

I agree with Tap's comments.

The blue color is confusing, though, as is the existing wiring on the panel (black/hot wire going to one of the busses).

I'd start by removing all the old wiring from the breakers and busses. Then, start afresh using the proper wire coloring...much less confusing.

US single-phase AC wire coloring:

black = hot
white = neutral
green = grounding



Bill
01-24-2013 12:21 PM
jrophoff
Re: Getting ready to add shore power

Quote:
Originally Posted by tap View Post
Diagram looks correct to me. Your fridge, outlets, etc. would have their hot wires attached the terminals in the lower right side of the breaker group, while the neutrals and grounds would be connected to the two bus bars.
Thanks for confirming.
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