solar recommendations - Page 2 - SailNet Community
 14Likes
Reply
 
LinkBack Thread Tools
post #11 of 42 Old 07-02-2014
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,486
Thanks: 0
Thanked 94 Times in 85 Posts
Rep Power: 8
   
Re: solar recommendations

Quote:
Originally Posted by andyselzn View Post
Sunforce seems to have 80, 100, and 150W for 12volt systems. No other options at this site. Sunforce 100 Watt Crystalline Solar Panel
That is a bit pricy. I sell a 100 watt flexible panel with the same output for $399 Cdn. 85 watt aluminum framed for $299 Cdn.

Here is a better source: 1 to 100 Watt Solar Electric Panels at Arizona Wind and Sun.
andyselzn likes this.

Brian
Living aboard in Victoria Harbour

Last edited by mitiempo; 07-08-2014 at 11:39 PM.
mitiempo is offline  
Quote Quick Reply Share with Facebook
The Following User Says Thank You to mitiempo For This Useful Post:
andyselzn (07-04-2014)
Sponsored Links
Advertisement
 
post #12 of 42 Old 07-02-2014
Junior Member
 
aeventyr60's Avatar
 
Join Date: Jun 2011
Location: Andaman Sea
Posts: 2,329
Thanks: 25
Thanked 63 Times in 60 Posts
Rep Power: 5
 
Re: solar recommendations

I've had Kyocera panels on my boat for 15 years. Still putting out full power. Tough frame for mounting. Good cable grommets that don't leak. Maybe a bit more expensive,but worth it for the long term.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.



"Your dreams minus your doubts equals your net worth"

Life is a short journey, filled with emptiness and pain. Get all the sailing and booty you can.
aeventyr60 is offline  
Quote Quick Reply Share with Facebook
post #13 of 42 Old 07-02-2014
Broad Reachin'
 
kwaltersmi's Avatar
 
Join Date: Aug 2006
Location: Grand Rapids, Michigan
Posts: 1,930
Thanks: 1
Thanked 17 Times in 17 Posts
Rep Power: 9
 
Re: solar recommendations

I've got a rollable 14W panel from PowerFilm that's durable and well-made. I believe they make rollable panels up to 60W.

Catalina 34

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
kwaltersmi is offline  
Quote Quick Reply Share with Facebook
post #14 of 42 Old 07-02-2014
Senior Member
 
Join Date: Aug 2007
Posts: 203
Thanks: 0
Thanked 9 Times in 6 Posts
Rep Power: 8
 
Re: solar recommendations

It is not so much the size of your batteries... it is your pattern of using the boat. How many amp-hours are you consuming between charges?

First, I am assuming you stow the panels while underway in a smaller boat... they'd be in the way underfoot.

If you're on a 5-day cruise, sailing hard every day with instruments, VHF, TP22, etc., then spending the evenings at anchor listening to tunes and using lights... then you'll have lots of amp-hours to recoup once you do place the panels in sunlight service.

If your use is more of weekend use, maybe two daysails surrounding one overnight evening at anchor, you have much less to recoup.

Last, when you do charge via panel, how long before you're using the boat again? If the boat will be idle and charging for days, a smaller panel should suffice. If you'll be right back out in a day, a larger panel is called for.

For what it is worth, on my 28-footer with similar equipment to yours, my weekend-use pattern is easily-supported by one Group 27 90AH deep cycle battery recharged during the work week with a 30 watt panel ($65 on eBay). My battery very rarely gets below 12.55 volts... and after a charge typically reads in the low 12.7s.
andyselzn likes this.
hriehl1 is offline  
Quote Quick Reply Share with Facebook
post #15 of 42 Old 07-02-2014 Thread Starter
Member
 
Join Date: May 2014
Posts: 74
Thanks: 12
Thanked 2 Times in 2 Posts
Rep Power: 2
 
Re: solar recommendations

The plan is to cross from SF to Hawaii some day. That is about 20 days of solar only power for the devices mentioned. So planning accordingly.
andyselzn is offline  
Quote Quick Reply Share with Facebook
post #16 of 42 Old 07-02-2014
no longer reading SailNet
 
Alex W's Avatar
 
Join Date: Oct 2012
Posts: 2,309
Thanks: 2
Thanked 140 Times in 133 Posts
Rep Power: 3
 
Re: solar recommendations

Quote:
Originally Posted by aeventyr60 View Post
I've had Kyocera panels on my boat for 15 years. Still putting out full power. Tough frame for mounting. Good cable grommets that don't leak. Maybe a bit more expensive,but worth it for the long term.
They aren't make small panels suitable for small boats anymore. Their smallest panel is 140W and 60" by 26". I don't know where you would fit that on a Bristol 24 without shading.

I am using a cheap Chinese panel on my boat. I'd have preferred to buy something higher quality (or at least from a brand that I've heard of), but quality rigid small panels seems to be a very limited market these days.
andyselzn likes this.

I'm no longer participating on SailNet.
Alex W is offline  
Quote Quick Reply Share with Facebook
post #17 of 42 Old 07-02-2014
Junior Member
 
Join Date: Jun 2014
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: solar recommendations

I have been using solarblvd.com for several projects and have been happy

Look into 2 6v 115/120Ah batteries (golf cart) for your 12v needs also, I would rather have the reserve power there(that will give you 120Ah total @ 12v)

size will be an issue on a boat, unless you can tilt them to the sun you may only get 3 or 4 hrs of decent sun per day( if that much with shadows and sails etc)

So your 100wt panel may only be putting out 8 or 9amps per day, thats not much

you may need to look at several 40/50/60 watt panels for their size and just tie them all together at the controller or daisy chain them
andyselzn likes this.
bansil is offline  
Quote Quick Reply Share with Facebook
post #18 of 42 Old 07-02-2014
Reward for lost Kraken!
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,442
Thanks: 5
Thanked 131 Times in 128 Posts
Rep Power: 11
   
Re: solar recommendations

Good solar panels: Most are well-behaved but obedience training usually isn't expensive if they need it.(G)

Two ways to go, the expensive brand name with a specific "marine use" warranty. Or, generic Chinese product with the expectation that it will not hold up as well but is cheap enough to replace when it fails, assuming that isn't a critical time. Like halfway to Hawaii.

Congress just raised a 30%(?) tariff on the panels the Chinese have been dumping on the US market, so expect prices to go way up real soon.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #19 of 42 Old 07-02-2014
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,486
Thanks: 0
Thanked 94 Times in 85 Posts
Rep Power: 8
   
Re: solar recommendations

Quote:
Originally Posted by bansil View Post

Look into 2 6v 115/120Ah batteries (golf cart) for your 12v needs also, I would rather have the reserve power there(that will give you 120Ah total @ 12v)

size will be an issue on a boat, unless you can tilt them to the sun you may only get 3 or 4 hrs of decent sun per day( if that much with shadows and sails etc)

So your 100wt panel may only be putting out 8 or 9amps per day, thats not much

you may need to look at several 40/50/60 watt panels for their size and just tie them all together at the controller or daisy chain them
Golf cart batteries are 220 - 240 AH so 2 will give you 220 - 240 AH @ 12 volts.

A 100 watt panel is rated at about 5.6 amps. With a good controller (MPPT) that can get an output of about 7 amps at charging voltage. On a sunny day without panel shading you can get about 35 AH into the batteries from such a panel.

If you are only getting 8 or 9 AH per day something is wrong.
andyselzn likes this.

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
post #20 of 42 Old 07-02-2014
Senior Member
 
mitiempo's Avatar
 
Join Date: Sep 2008
Location: Victoria B.C. Canada
Posts: 7,486
Thanks: 0
Thanked 94 Times in 85 Posts
Rep Power: 8
   
Re: solar recommendations

Quote:
Originally Posted by hellosailor View Post

Two ways to go, the expensive brand name with a specific "marine use" warranty.
As far as I know Kyocera is the only panel that has a "marine" warranty. Siemans may have had one but they are gone.

Brian
Living aboard in Victoria Harbour
mitiempo is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
SOLAR JACK solar panels? christian.hess Electrical Systems 0 11-13-2013 09:51 PM
Solar deck instead of solar panels ulferlingsson Gear & Maintenance 34 01-31-2013 05:03 AM
Anyone bought solar panels from Sun Solar? justonemoreproject Electrical Systems 1 04-18-2012 05:08 PM
solar recommendations please newhaul Gear & Maintenance 43 03-07-2011 08:19 AM
Recommendations, please. WinterRiver Boat Review and Purchase Forum 9 12-05-2006 08:06 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome