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Old 11-20-2023, 11:13 AM   #1
4 Rivet Member
2022 33' Classic
Chesapeake , Virginia
Join Date: Nov 2021
Posts: 329
Cerbo, Solar controller and shunt remain on?

Instead of removing my Battle Borns this year, I fully disconnected them and left them in the battery box. I was surprised to see LED activity on the Victron solar charge controller, shunt, and the Cerbo GX. My guess is the solar charge current is powering these devices?

I did not see these Victron units last year. Since I have the partition near the rat's nest removed while troubleshooting, I just noticed.
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Old 11-20-2023, 03:42 PM   #2
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2023 25' Globetrotter
2021 16' Bambi
Forest Lake , Minnesota
Join Date: Mar 2021
Posts: 389
Yes, in ours the solar controller is hooked to the positive bus bar, so anything on the DC side is powered even if the batteries are disconnected and not plugged in. I added a solar disconnect switch which is recommended in solar installations if you don't want to inadvertently power something. Earlier this year when I was replacing the batteries and had removed them, my SO was watching TV which was sort of freaky until I remembered the solar was hooked up.
2023 Globetrotter 25FBT "Curly"
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Old 11-20-2023, 04:30 PM   #3
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2022 33' Classic
Chesapeake , Virginia
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Posts: 329
Thanks. I thought I had lost my mind, or this installation was violating the laws of physics. I assume once the sun sets, these Victron units will be de-energized.
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