Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 30-11-2012, 10:13   #16
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: One battery?

Quote:
Originally Posted by salticrak View Post
I am am up on the sunshine coast, and you are right about the vhf/charger. The trojan route with more panels later seems to be a good idea.2x6v or 12v ?

cheers
paul.
I have cruised the Whitsinday islands a few times, which are near you. In the middle of winter ( converting to your 40w) should provide an average of about 9Ars. Other times of year will be better, but those annoying cyclones put me off summer cruising those areas.

I think more panels are going to better for you than more battery capacity, unless you can plug into shore power. Given that batteries are dear in Australia, but solar is cheap I would concentrate my expenditure increasing the solar panels rather than a large battery bank.

Say 80w of solar and 100ahrs of battery capacity will give you much better usable power than 40w solar and 200AHrs of battery capacity.
The solar panels will last for 25years plus. The batteries (even with 200Ahrs ) 5-7 years and the weight penalty of the larger batteries is significant for a vessel like yours.
__________________

__________________
noelex 77 is offline   Reply With Quote
Old 30-11-2012, 11:51   #17
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,045
Re: One battery?

"what is a poor boy meant to do?"
1- Avoid expensive luxury hobbies like sailing.
2-Don't use the electrics.

I mean, really. If stuff is beyond your budget, you don't use it.

You only need the nav lights if you're sailing at night. You don't need the chartplotter if you read your charts and do a little traditional nav and avoid think waters.

There's no magic, you either go in debt to a credit card or you accept the concept of delayed gratification. Or make do without.
__________________

__________________
hellosailor is offline   Reply With Quote
Old 30-11-2012, 11:55   #18
Moderator Emeritus
 
David M's Avatar

Cruisers Forum Supporter

Join Date: Sep 2007
Location: San Francisco Bay
Boat: research vessel
Posts: 10,150
Re: One battery?

It is very feasible to get by on one battery for simple electrical systems and for boats that don't have an engine that requires a dedicated start battery.

I don't know if they are on the East coast but Costco also has inexpensive, decent quality deep cycle batteries. Costco does not mark up their merchandise more than 15% above their cost. (according to Clarke Howard, my consumer advocate guru)
__________________
David

Life begins where land ends.
David M is offline   Reply With Quote
Old 30-11-2012, 12:02   #19
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,045
Re: One battery?

Costco is on the east coast but their "battery" policy is quite unlike their usual customer service. They cannot and will not order in a battery for you (unlike tires) and they cannot and will not check to see what is in inventory or what is usually stocked, so all you can do is go to the store, see if there's a battery you want, and drive to the next store if there isn't.

Is that dumb or what?

And apparently, there's no set inventory policy beyond "we have some for cars and some for golf carts, if there's a lot of golf around a store".
__________________
hellosailor is offline   Reply With Quote
Old 30-11-2012, 12:06   #20
Writing Full-Time Since 2014
 
thinwater's Avatar

Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32/34
Posts: 4,338
Re: One battery?

I cruised a Stiletto 27 catamaran--similar in many ways--extensively with 2 x group 24 12v batteries. I started out with one group 24 and that was not quite enough if there were a few cloudy days. However, if I had a fresh start, I would recommend one group 27 or the equivalent. Certainly the sort of boat where watching EVERY POUND pays rewards.

http://sail-delmarva.blogspot.com/20...-sleep-in.html
__________________
Gear Testing--Engineering--Sailing

Writing full-time since 2014.
Bookstore:http://sail-delmarva.blogspot.com/20...ook-store.html
thinwater is offline   Reply With Quote
Old 30-11-2012, 13:00   #21
Senior Cruiser
 
senormechanico's Avatar

Cruisers Forum Supporter

Join Date: Aug 2003
Boat: Dragonfly 1000 trimaran
Posts: 5,827
Re: One battery?

We called Costco to inquire about golf cart battery stock when my son set up his home's backup power system.
Costco let us know what they had, we asked them to put his name on 8 batteries and they did, no problem.
Maybe it's an East coast vs. West coast thing.
__________________
Memento,homo, quia pulvis es, et in pulverem reverteris.
senormechanico is offline   Reply With Quote
Old 17-12-2012, 12:26   #22
Registered User
 
salticrak's Avatar

Join Date: Jul 2011
Location: palmwoods qld australia
Boat: wharram tiki 26
Posts: 739
Re: One battery?

So i decided to go with 2x 40watt panels in parallel and a 70 amp hour agm battery.I have secured them to the rear beam of my wharram tiki 26. between the two panels is the mounting I have made for the windvane.
cheers paul.
Attached Thumbnails
Click image for larger version

Name:	rsz_p1000013.jpg
Views:	73
Size:	51.3 KB
ID:	51343  
__________________
salticrak is offline   Reply With Quote
Old 17-12-2012, 12:36   #23
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Re: One battery?

Sounds like a great set up and should give you plenty of power for your modest needs. Don't forget the regulator though.
__________________
noelex 77 is offline   Reply With Quote
Old 17-12-2012, 12:52   #24
Registered User
 
salticrak's Avatar

Join Date: Jul 2011
Location: palmwoods qld australia
Boat: wharram tiki 26
Posts: 739
Re: One battery?

Thanks mate,I have a morningstar sunsaver 6 for the panels.
__________________
salticrak is offline   Reply With Quote
Old 17-12-2012, 13:01   #25
Registered User

Join Date: Oct 2012
Location: Currently Tasmania after Pacific crossing
Boat: Catalina 42
Posts: 217
Re: One battery?

Quote:
Originally Posted by salticrak View Post
So i decided to go with 2x 40watt panels in parallel and a 70 amp hour agm battery.I have secured them to the rear beam of my wharram tiki 26. between the two panels is the mounting I have made for the windvane.
cheers paul.
I hope I'm mistaken to think you are erecting a windvane between and above your solar panels?

As we are all aware, panels require full sun without shadows across the cells.
__________________
Amnesia II is offline   Reply With Quote
Old 17-12-2012, 13:08   #26
Registered User
 
salticrak's Avatar

Join Date: Jul 2011
Location: palmwoods qld australia
Boat: wharram tiki 26
Posts: 739
Re: One battery?

It is the best compromise, with the limited space I have at the back of the boat.There will be a trade of for sure.I will also have a tiller pilot.The windvane is demountable as designed by Hanneke Boon.
__________________

__________________
salticrak is offline   Reply With Quote
Reply

Tags
battery

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:36.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.