True Isolator issue

[SgtGuy6027]

I think I have killed my 2nd AUX battery. Didn't test this when I replaced the odyssey, but I did a few mins ago. I have 14.3 volts on the factory side to the isolator and only 5 coming out going to the AUX battery. This is when the machine is running. When off there is 12.5 on the factory battery and 5 on the AUX. Thinking the isolator is toast.

 

[Admin]

 

[TripleB]

I think I have killed my 2nd AUX battery. Didn't test this when I replaced the odyssey, but I did a few mins ago. I have 14.3 volts on the factory side to the isolator and only 5 coming out going to the AUX battery. This is when the machine is running. When off there is 12.5 on the factory battery and 5 on the AUX. Thinking the isolator is toast.

I had an isolator go bad and it quit charging my 2nd battery. Put a charger on your 2nd battery for now so it doesn't sit around dead. Order another isolator from the club store. You will only need the isolator and not all the stuff that comes in the kits.

 

[TripleB]

Also the mighty maxx battery is only a third of the price of the Odyssey battery and people are getting just as good service or better out of the mighty maxx.

 

[Hondasxs]

When off there is 12.5 on the factory battery and 5 on the AUX. Thinking the isolator is toast.

Test it...
Unhook the second battery from the isolator post and with the blue light on both post should be the same.

How old is your setup? 2 batteries failing is an issue.
I would like to know where you are grounding your second battery at.

 

[tjoreo]

I don't know exactly how True Isolator works because I have the Blue Sea unit, but here is what happend to me. My aux battery ran down to low (accessory draw when not running) and it wouldn't let the charging relay connect the 2 batteries together when I started the bike. I'm guessing so it wouldn't hurt the factory battery or charging system by trying to charge a super low battery. After charging the Aux battery a little with a battery charger, the relay worked fine after that. Don't know if this has anything to do with it, but might be worth a try before buying a new isolator. The moral of my story is a I need to ride more to keep everything charged up.

 

[SgtGuy6027]

Test it...
Unhook the second battery from the isolator post and with the blue light on both post should be the same.

How old is your setup? 2 batteries failing is an issue.
I would like to know where you are grounding your second battery at.

I will try that when I get home. I believe it was my fault on the 1st battery I think I left the sound bar on, its wire straight to the battery. As for the grounding on the 2nd battery, I used the AUX ground that came on the machine.

 

[SgtGuy6027]

Test it...
Unhook the second battery from the isolator post and with the blue light on both post should be the same.

How old is your setup? 2 batteries failing is an issue.
I would like to know where you are grounding your second battery at.

And I bought the buggy in July so August time frame is when I installed the dual battery set up. This was the 1st thing I did.

This is a crud drawing on how I have it set up

 

[Hondasxs]

Can you post or send me a few pics of your setup later.

Your drawing does not show the battery ground point.
The second battery MUST be ground back to the primary system.
Either..
1 - to the primary battery
or
2 - to the frame somewhere.

 

[Hondasxs]

.

Sent from my SM-G996U using Tapatalk

 

[The Green Goat]

And I bought the buggy in July so August time frame is when I installed the dual battery set up. This was the 1st thing I did.

This is a crud drawing on how I have it set upView attachment 278876

Any parasitic draw from the winch? Could be draining it while its sitting. I don't know what isolator you are running, but some of them won't kick over in an undervoltage condition to keep from dragging down the main battery.

 

[SgtGuy6027]

Can you post or send me a few pics of your setup later.

Your drawing does not show the battery ground point.
The second battery MUST be ground back to the primary system.
Either..
1 - to the primary battery
or
2 - to the frame somewhere.

The ground i am.using for the 2nd battery is the factory ground that was tucked away near the main battery

 

[Hondasxs]

Ok. I'm using the same ground.
Do the Isolator test and get back to us.

 

[SgtGuy6027]

Ok. I'm using the same ground.
Do the Isolator test and get back to us.

With the buggy running

 

[Ohio4x4]

Also the mighty maxx battery is only a third of the price of the Odyssey battery and people are getting just as good service or better out of the mighty maxx.

This is what I've had for a couple of years now and had no trouble.

 

[TripleB]

With the buggy running

View attachment 278939 View attachment 278940

The blue light has to be on or nothing is going through the isolator.

 

[Tramguage1]

Is the small black wire hooked to a good ground?

 

[Tramguage1]

Also what size screws did you use to mount the isolator? May have damaged the circuit board inside.

 

[SgtGuy6027]

Is the small black wire hooked to a good ground?

Directly to the negative

 

[SgtGuy6027]

Also what size screws did you use to mount the isolator? May have damaged the circuit board inside.

The blue light has to be on or nothing is going through the isolator.

Backed it up into the garage to get a better pic

 

[trigger]

How old is your second battery? You said you replaced an Odyssey, just the primary or both?