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Old 06-05-2023, 03:31 PM   #1
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Best Battery Switch?

Greetings all, haven't been here for a while. I'm looking for opinions on battery switches, the 1,2,1+2 kind. My red one has died Perko I think. All ideas appreciated, thanks.
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Old 06-05-2023, 04:45 PM   #2
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Good news is you can buy identical battery switch. The Perko will have a model number. It might also be a substandard Perko knockoff. But before you buy anything, check the nuts on the back to see if they are loose.
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Old 06-05-2023, 05:05 PM   #3
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I just installed a Blue Seas ‘Dual Circuit Plus’ which adds an element of mistake proofing to these complex machines. I have AGM on one circuit and liths on the other. It seems like a simple decision but there are many different considerations and you might want to give it some thought. Rod Collins has a detailed write up on just topic, sorry, no idea how to link it.
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Old 06-05-2023, 05:17 PM   #4
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Quote:
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Rod Collins has a detailed write up on just topic, sorry, no idea how to link it.
1/2/BOTH Battery Switch Considerations Is this the Collins article you are thinking of?
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Old 06-05-2023, 05:57 PM   #5
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1/2/BOTH Battery Switch Considerations Is this the Collins article you are thinking of?
Yeh, thanks. And be sure to tip generously, this guy is well worth it.
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Old 06-06-2023, 03:45 PM   #6
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I'd like a 1-2-both battery switch that had a feature that allowed remote indicators of the battery switch position. My battery switch is in a compartment at the aft of the boat. Having lights on the helm that showed which battery was on would be handy.
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Old 06-06-2023, 04:41 PM   #7
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I'd like a 1-2-both battery switch that had a feature that allowed remote indicators of the battery switch position. My battery switch is in a compartment at the aft of the boat. Having lights on the helm that showed which battery was on would be handy.
Blue Sea has lots of options, I spent several hours on this decision, depend on what youíve got, what youíre trying to do, and how you think your system might evolve. I did a complete electric make over, probably went through a dozen design iterations, not done yet but so far works as hoped.
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Old 06-06-2023, 08:47 PM   #8
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If the Blue Seas will fit they would be a good choice. I have bought tons of electrical equipment from them and never had a bad experience.
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Old 06-06-2023, 08:59 PM   #9
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Are you sure it has died? Our 42 year old Perko (1,2, both and off) was not connecting to one bank. I was going to replace but spoke first to my electrician. Apparently with not a lot of switching, and I hadn’t been, the contacts can get corroded (if that’s the term) and just need to get shiny. Turn off all charging and rotate the switch a bunch of times. Worked for me, but my system is simple.
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Old 06-07-2023, 12:50 PM   #10
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I ended up buying the Blue Seas 3002 HD four position (off,1,2,1+2). This one is a bit bigger and heavier than the Blue Seas red one I have now. Problem was when you turned it off it wasn't off and it had become hard to turn. I had an electrician take a look at it, plus other electrical issues, and he said the switch had welded? 2 positions together and also showed the problem by being hard to turn. The 3002 HD costs more at $76+2 day shipping but there's a big difference in quality. Only thing I don't like is that it didn't come with the bottom standoff legs like the red one.
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Old 06-08-2023, 05:40 AM   #11
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Are you sure it has died? Our 42 year old Perko (1,2, both and off) was not connecting to one bank. I was going to replace but spoke first to my electrician. Apparently with not a lot of switching, and I hadnít been, the contacts can get corroded (if thatís the term) and just need to get shiny. Turn off all charging and rotate the switch a bunch of times. Worked for me, but my system is simple.
This is a fairly common issue on old switches, and certainly easy enough to try
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Old 06-09-2023, 08:05 AM   #12
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Ill take it apart and see what the inside looks like after I replace it with the new one.
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Old 06-09-2023, 11:26 AM   #13
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Ill take it apart and see what the inside looks like after I replace it with the new one.
Be interesting to see what the inside looks like.
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Old 06-10-2023, 01:32 PM   #14
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If it just needs a little cleaning up, do so, and put it into "spares".
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Old 06-12-2023, 01:00 PM   #15
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I, too, have a problem with Perko switch failures, so I now use only Blue Seas. And, yes, I know that the first thing to do is operate the switch multiple times. Switching DC is difficult and polishing the contacts sometimes helps.



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Old 06-12-2023, 02:32 PM   #16
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On a previous boat we had a Perko battery switch that wasnít working. I pulled out the screws holding it to the bulkhead and it started working. I ordered another one of the same model. Put it in and it didnít work. Unscrewed it and it worked. Every time I would tighten it up it would not work. Must be a design or manufacturing flaw.
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