Search SEARCH

How to connect solar panels to batteries?

I have two solar panels that were going to be trashed at work. I want to use them to charge batteries on my RV but i noticed they put out around 20 volts in direct sunlight. So i am wondering: -isn't this way too much voltage for a 12 volt system? -do a need some sort of a regulator connected to keep them from overcharging?

Asked By: - 7/4/2010
Best Answer - Chosen by Asker
20 volts is a common open-circuit voltage for nominal 12v panels. The panels put out about 15v at full load. If the panel puts out little enough that it takes 20 hours or more to put a full charge in the battery you can get by without a charge controller - just keep the cells topped up with distilled water. A charge... More
Answered By: virtualguy92107 - 7/4/2010
Additional Answers (2)
You can use them without the regulator . Just make sure you use blocking diodes so the the power does not flow back into the panels . You can get those at radio shack of some electronic store or off eBay for a few bucks .
Answered By: Dads boy - 7/4/2010
 
You want the panel that is charging the battery to be higher voltage than the battery. A fully charged 12V battery is over 14V. A 12V solar panel puts out between 17V - 20V, so that's a good size for your battery. They name them all 12V to help show what works together (like Garanimal clothes... More
Source(s):
Answered By: Amy - 7/6/2010
 
Sponsored results
Over 483 Local Jobs Now Hiring In Your Area. $18-$87/Hr - Apply Today!
Jobs.Quick-com
Click. Search. Apply. Free!
www.JobDiagnosis.com
Earn residual on products and services customers uses daily at home.
www.5linx.net/L657968
Jobs hiring near your local area. Part-time, Full-time, Work at home.
www.HiringLocally.com

Other Career Questions

What is your current job? Why did you choose this job? What do you enjoy about your job? What do you dislike about your job? What would be your perfect job? Would you rather have this j...
3 answers - Asked By: drop pants not bombs!.♥ - 3/2/2010
Where are the jobs? Is productivity and globalization creating a permanent “recession” of jobs? My main issue is I am doing a paper for school and have no idea where to begin. I was hoping suggestions...
4 answers - Asked By: bayebd24【ツ】 - 11/21/2007
Hi ok im 19 and about to start college to do an acess course into a university. Ive been browsing through all the courses and im tottaly stuck! I thought politics but im scared ill end up with some r...
1 answers - Asked By: roseparkerly - 1/26/2009

Content is not owned or controlled by Monster. Any content concerns should be addressed with Yahoo!
Yahoo! Does not evaluate or guarantee the accuracy of any Yahoo! Answers content. Yahoo! Disclaimer.

Popular Articles

Best-Paying Work-from-Home Jobs Article Rating
It’s easier than ever to work from home. Of course, not every job is a mobile job, and some companies aren’t interested in having their employees work from home.
2013 Marketing Jobs Outlook Article Rating
The US may be facing another year of anemic hiring overall, but that won't be the case in the high-orbit world of multichannel, digital media marketing.
For Employers: Post Jobs | Search Resumes | Advertise
About Monster | Work for Monster | Advertise with Us | AdChoices | Partner with Us | Investor Relations | Social Media
Terms of Use | Privacy Center | Accessibility Center | Help | Security | Contact Us | Sitemap | Mobile
©2014 Monster - All Rights Reserved U.S. Patents No. 5,832,497; 7,599,930 B1; 7,827,125 and 7,836,060 MWW - Looking for Monster Cable? - V: 2014.1.40.24-313
eTrustLogo