Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-29-2021, 10:58 AM   #1
4 Rivet Member
 
farafield's Avatar
 
2018 16' Sport
Charlotte , Vermont
Join Date: Aug 2017
Posts: 463
Images: 1
Factory solar charging two batteries in series

I am thinking of getting a second Lifeline 24t battery. I have the factory installed 80w solar panel. If I hook up both batteries in series will they both get recharged by solar/shore power/tow vehicle? How do I attach solar cables to accomplish that? What I'd like to avoid is having to unhook one battery and hook up the second one when the first one is drawn down, i.e. both batteries hooked up all the time and getting recharged by either solar or shore power or tow vehicle.
__________________
Don't let the sound of your own wheels drive you crazy...

Kim
Charlotte, VT
2010 F-150, 5.4l, V8, 3.55; Bramble: 2018 Bambi Sport 16
farafield is offline   Reply With Quote
Old 07-29-2021, 11:20 AM   #2
Rivet Master
 
gator.bigfoot's Avatar
 
2007 30' Classic
KW , Ontario
Join Date: May 2012
Posts: 843
Quote:
Originally Posted by farafield View Post
I am thinking of getting a second Lifeline 24t battery. I have the factory installed 80w solar panel. If I hook up both batteries in series will they both get recharged by solar/shore power/tow vehicle? How do I attach solar cables to accomplish that? What I'd like to avoid is having to unhook one battery and hook up the second one when the first one is drawn down, i.e. both batteries hooked up all the time and getting recharged by either solar or shore power or tow vehicle.
You don't want them in series, but in parallel. I've got 300 watts and a simple pwm charger, charging 4 Lifelines. Works great and gives all the power I need. In fact I never have my batteries charged by anything else but solar.

What you want is battery cables of equal length to both batteries from the charge controller. Use at least a 6 gauge wire, but 4 is better. How old is your original battery? You want the batteries to be similar in age and identical in specifications. If they are mismatched then you will loose performance. Also pay particular attention to your connections. You want quality connectors that are crimped well. You can make your own or buy them in and just connect them.

What type of charger do you have? Factory stuff is usually junk. Replace the Atkinson with something of better quality. I'm running a cheap MorningStar, but there are many other chargers to choose from. The favorite on this forum seems to be Victron. Easily available on Amazon. Also, if you haven't done so yet hook up a battery monitor. I'm using a Trimetric but again most people on this forum use Victron. The battery monitor is a key tool in managing your battery usage and monitoring your solar performance. Well worth the investment.
gator.bigfoot is offline   Reply With Quote
Reply


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
Factory Installed Solar Charging System SilverGate Generators & Solar Power 600 08-09-2021 08:31 PM
Charging with two batteries Wanna EB Batteries, Univolts, Converters & Inverters 25 08-29-2014 02:51 PM
Two 6 volts or Two 12V series 27 LI Pets Electrical - Systems, Generators, Batteries & Solar 0 09-07-2006 06:06 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 09:54 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.