Redarc battery isolator

Submitted: Thursday, Jun 18, 2009 at 08:53
ThreadID: 69936 Views:3243 Replies:5 FollowUps:2
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Hi all, I have searched the forum for an answer but could not find one, so here is my question, I appreciate any help.
Recently I have installed a redarc smart battery isolators (SBI12). At the moment there is no load connected to the aux battery (AGM 100aH). The isolator is not switching in the aux battery. The aux battery is currently showing 12.75 volts. I took the car for a 20km drive, I thought this might charge the main battery and then it would connect the aux battery, but it did not. Do I need to travel for a longer period before the isolator switches? OR is it not switching because it senses that the aux battery is fully charged (12.75v).
Regards
Robbo
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Reply By: Member - Troll 81 (QLD) - Thursday, Jun 18, 2009 at 09:08

Thursday, Jun 18, 2009 at 09:08
If it works like mine it waits till the main battery is showing charged and then it opens up
AnswerID: 370631

Follow Up By: Member - Troll 81 (QLD) - Thursday, Jun 18, 2009 at 09:25

Thursday, Jun 18, 2009 at 09:25
I just checked the redarc site and it will open once the main battery is sitting on 13.2v

you can find the PDF here
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FollowupID: 637943

Reply By: chisel - Thursday, Jun 18, 2009 at 09:51

Thursday, Jun 18, 2009 at 09:51
It should switch in as soon as the alternator is giving 13.2V. Usually not long after starting. It might switch out again soon after the engine is turned off - not sure what the cutout voltage is on a redarc.
Did you check while the engine was running?
AnswerID: 370641

Reply By: RV Powerstream P/L - Thursday, Jun 18, 2009 at 12:43

Thursday, Jun 18, 2009 at 12:43
Robbo
A cranking battery will recover normally within 3 minutes from start the engine.
So after that your aux should be getting a charge.
Ian
AnswerID: 370667

Reply By: Member - Stuart P (WA) - Thursday, Jun 18, 2009 at 17:18

Thursday, Jun 18, 2009 at 17:18
make sure the earth(black wire on solenoid) has a good earth ,or else the solenoid wont opperate
AnswerID: 370714

Reply By: olcoolone - Thursday, Jun 18, 2009 at 19:29

Thursday, Jun 18, 2009 at 19:29
Instead of asking the experts here, why not give Redarc a call and speak to there technical guys about you problem.

They just might be able to help you out.

We did training with them on Saturday and they were very helpful and knowledgeable.

AnswerID: 370748

Follow Up By: Rob - Thursday, Jun 18, 2009 at 20:05

Thursday, Jun 18, 2009 at 20:05
Thanks for all the help, guy's.
I did speak to redarc and they were extremely helpful.
If you can hear that slapping sound, it's me slapping the back of my head!!!!
The problem was that I connected the aux battery to the wrong terminal, duh, won't do that again!!!!!

Rob
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FollowupID: 638040

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