2nd battery question

Submitted: Sunday, May 18, 2008 at 19:45
ThreadID: 57735 Views:2085 Replies:2 FollowUps:2
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Looking at putting a 2nd deep cylce battery for added capacity in camper trailer and looking for advice if what I want to do will work OK.

What I want to achieve is to be able to run the camper off one battery while the other one is charging. When the first is charged flick a switch and changeover running camper to fully charged one while the first one is being charged.

Currently running 123W solar panel with 3 stage charger / regulator.

The way I had in mind to wire it up would be:
1. Output from regulator into VSR.
2. Input from car into VSR same terminal as regulator.

Switchgear I'm looking is here.

Will it work or is there a better way of doing it?
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Reply By: nikademus - Sunday, May 18, 2008 at 20:08

Sunday, May 18, 2008 at 20:08
Wouldn't you be better off hooking the two batteries up in parallel if you are after more capacity? It would save switching...
AnswerID: 304559

Follow Up By: Mogul - Sunday, May 18, 2008 at 20:11

Sunday, May 18, 2008 at 20:11
Too many issues with charging them both properly.
FollowupID: 570618

Follow Up By: Nomadic Navara - Monday, May 19, 2008 at 00:39

Monday, May 19, 2008 at 00:39
Not really - you are opting for the hard way. For interconnecting batteries see -Site Link

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FollowupID: 570682

Reply By: Affordable Batteries & Radiators - Sunday, May 18, 2008 at 20:10

Sunday, May 18, 2008 at 20:10
Hi Mogul

The solar panel can't keep the VSR engaged so it won't work.

Also from my own testing you are better off having one battery bank. Don't try running 2 banks as this is hard work and rather leave the solar regulator to do the thinking for you.


AnswerID: 304562

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