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Old 04-25-2020, 06:09 PM   #1
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Battery isolator, year 2000, alpine 36

I suspect that my old blue diode-based isolator should be replaced as part of my battery compartment update.
It is 20 years old, after all.
I have the wiring diagrams from the ACA but I can't read the isolator specification. It looks just like the 200A Cole Hersee unit on Amazon.....but would that be a good fit?
And by fit I mean fitting in the same bolt holes as the old one.
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Old 04-25-2020, 06:16 PM   #2
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Quote:
Originally Posted by Brianna View Post
I suspect that my old blue diode-based isolator should be replaced as part of my battery compartment update.
It is 20 years old, after all.
I have the wiring diagrams from the ACA but I can't read the isolator specification. It looks just like the 200A Cole Hersee unit on Amazon.....but would that be a good fit?
And by fit I mean fitting in the same bolt holes as the old one.
Some have gone with battery combiners.
https://www.invertersupply.com/index...4GmbNRBW4nDgmV
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Foretravel tag axle 40 ft. 500 hp/1550 ft/lbs ism 1455 watts on the roof. 600 a/h's lithium down below.
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Old 04-25-2020, 07:17 PM   #3
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...guess these units can fail--but don't recall much conversation on this issue?????? the new-style combiner sounds like a good solution....the old-style isolator creates the need for the DuVac exciter requirement on the engine alternator.....[eg, alternator can't "see" past isolator for battery voltage level.....]
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Old 04-25-2020, 08:38 PM   #4
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Originally Posted by Old Scout View Post
...guess these units can fail--but don't recall much conversation on this issue?????? the new-style combiner sounds like a good solution....the old-style isolator creates the need for the DuVac exciter requirement on the engine alternator.....[eg, alternator can't "see" past isolator for battery voltage level.....]
Exactly, if upgrading to a newer or bigger non Duvac alternator, a necessity. I have had the diode type isolator fail on a couple of coaches.
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