Go Back   iRV2 Forums > CAMPING, TRAVEL and TRIP PLANNING > Boondocking
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 10-13-2014, 11:12 AM   #15
Senior Member
Join Date: Apr 2012
Posts: 368
The efficiency of the charge controller is also a big factor and a reason they vary in price. The batteries are also limited as to how fast they can recharge so the controller is going to clip the output from the panels to prevent damaging the batteries. This is why a temperature sensor on the battery terminal is used to allow the controller to be a little less conservative in its charging profile, and better controllers allow you to set the battery type in the bank.

elkhornsun is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 10-19-2014, 04:48 PM   #16
Senior Member
Smitty77's Avatar
Join Date: Aug 2010
Location: Over the next hill, around the next curve...
Posts: 2,378
Lots of variables on what you will see yielded in AH's to and thru your controller to your battery bank. Your AH's yield seems in the appropriate range, possibly a bit on the medium high side of yield. A very broad rule of thumb is 6AH per 100W of SP. Very variable based upon so many combinations (panel heat, wire size, controller efficiency, etc., etc.), so this can easily very + or - 2+AH's.

Another good info source is AM Solar's Solar Education section:

Benefits of Solar Battery Charging and a System Overview

As another general rule of thumb, plan for a good 25% (or more) SP's then you think you will need to support your daily usage. This allows for slight shade, or low angles, or dirty panels, etc. - and still keep you up and going. Three main things to consider if you are not able to install your dream SP system all at one time. This is for future proofing:

1) Roof real estate layout of panels - layout with expansion in mind.

2) Cabling runs at appropriate gauge for future SP addition.

3) Controller with enough room to handle more SP later.

Have fun, be safe,

Roo II is our 04 Country Coach Allure 40'
OnDRoad for The JRNY! Enjoy life...
Smitty77 is online now   Reply With Quote


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

Advanced Search
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Charger for Solar & Shore Power??? yourpcgeek49 iRV2.com General Discussion 12 08-16-2014 05:14 PM
My Solar Installation airmon Going Green 11 04-28-2014 05:20 PM
Solar help please GSGracie RV Systems & Appliances 10 03-15-2014 03:48 PM
Portable Solar chargers bubbajean Going Green 1 08-14-2013 06:19 AM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:44 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.