Testing an old Solar Panel - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 09-21-2008
Ilenart's Avatar
Senior Member
 
Join Date: Jul 2007
Location: West Australia
Posts: 508
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 8
Ilenart is on a distinguished road
Testing an old Solar Panel

I have an old (approx 10 years) solar panel which I can obtain for free and there is a spot above the davits where it will fit nicely. However before I go to the trouble of fitting it I am wondering what tests I can perform. In a reference book I read you should get an average of 19v in an open curcuit and around 15v under load. In full light I should be reading around 7 amps? Any other tests?

The panel is rigid / crystalline and measures 1.37m by 0.74m (5.9 by 2.4 feet). Not sure what brand. My guess is that it is around 100w.

Ilenart
Reply With Quote Share with Facebook
  #2  
Old 09-21-2008
Don Radcliffe
 
Join Date: May 2007
Location: Santa Cruz
Posts: 396
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
donradclife is on a distinguished road
You can test the panel with just a multimeter, if it has amps as well as volts. As you said, the open circuit voltage should be 17-19 volts in direct sunlight. If you put the ammeter directly across the leads, you will read short-circuit amps. The amps the panel will put into a battery are typically about 80% of the short-circuit amps.
Reply With Quote Share with Facebook
  #3  
Old 09-21-2008
Ilenart's Avatar
Senior Member
 
Join Date: Jul 2007
Location: West Australia
Posts: 508
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 8
Ilenart is on a distinguished road
thanks Don
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
A Little Help from the Sun Don Casey Cruising Articles 0 12-20-2001 07:00 PM
Choosing and Installing Solar Panels Sue & Larry Gear and Maintenance Articles 0 11-06-2000 07:00 PM


All times are GMT -4. The time now is 01:43 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.