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View Full Version : 04 X-Star - batt isolator burned up


jonyb
07-20-2011, 10:28 PM
A customer of mine has a 2004 X-Star that I've done some work on over the past few years. The boat originally had 1 battery, but 3 years ago, I added a second battery. I think it's tied to the Perko switch, but can't remember. It could be wired in parrallel with the other battery, but I won't have the boat until tomorrow to verify this. I do know that all the amps are wired directly to the Stinger SP1700. A couple weekends ago, an amplifier was added. The boat currently has 2 Syn6's and no other amps. After taking the boat out a few times since the last install, the battery isolator burned up. It's visibly charred, so I'm gonna assume that no current is passing through. The SP1700 has it's own 6A charger wired directly to it, and is charging when the boat is on the trailer. The owner is not mechanically inclined and doesn't know how to troubleshoot anything, so until the boat is in my possession, that's all i can say.

What's the point of this isolator? can it just be removed? All the boats I've worked on have had 1/0 directly to the switch from the alternator, then 1/0 to each battery.

I go to look at the boat at 0700 Thursday morning and can have more information, any help is appreciated.

agarabaghi
07-21-2011, 09:15 AM
I have a stinger 200amp isolator / relay I would be willing to sell. Im guessing the load going through the old isolator fried it.

An isolator keeps each battery separate during charge and discharge. It puts less load on the alt so it is only charging 1 battery at a time. It will also keep your main starting battery separate from getting drained by accessories running when the boat is off.

wrobins1
07-21-2011, 10:25 AM
Check out this thread.....

http://www.mastercraft.com/teamtalk/showthread.php?t=3557&highlight=DUAL+BATTERY+RELAY

jonyb
07-25-2011, 11:25 AM
An isolator keeps each battery separate during charge and discharge. It puts less load on the alt so it is only charging 1 battery at a time. It will also keep your main starting battery separate from getting drained by accessories running when the boat is off.

Thanks for the info. The isolator had an excessive amount of corrosion on the input side. The compartment that it was in was soaking wet and probably stays like that. I removed the isolator from the loop and ran a 1/0 wire from the alternator to the switch. Both batteries are trashed too, they show 5.5V at rest.

agarabaghi
07-25-2011, 11:33 AM
Sorry to hear that. Let me know if your interested in the stinger 200amp isolator relay. Ill let it go cheap as i went with a different solution

jonyb
07-25-2011, 12:20 PM
Thanks, but I'm a dealer for Stinger, and really don't have a need for that anyway.

agarabaghi
07-25-2011, 01:40 PM
ah nice, well i might be hitting you up in the future haha