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Old 03-18-2019, 04:37 AM   #1
2019 27' Globetrotter
Casper , Wyoming
Join Date: Dec 2017
Posts: 17
Disconnecting Negative = Install Battery Disconnect?

I have a battery tender I use on the two AGM batteries I am storing in my garage until we put the AS in use. I intend to use the battery tender when the batteries are put back in the box on the trailer.
QUESTION: Does (1) disconnecting the negative terminal when the batteries are installed in the battery box and subsequently using the battery tender accomplish the same thing if (2) I install my own battery disconnect switch at the battery box, and then use the tender?
Too many parasitic loads now on Airstreams sucking the fun out of batteries.
Thank you.
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Old 03-18-2019, 08:04 AM   #2
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Curtis Wright
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Eyren Haven , South Jersey
Join Date: Apr 2014
Posts: 326
Yes you can use a battery disconnect switch on the negative. I have a Blue Sea M series 6004 single circuit switch. I switch the negative, and then pull fuses if i want just one circuit off the battery. Be sure to have the battery tender on the battery side of the switch.
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Old 03-18-2019, 08:21 AM   #3
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1988 25' Excella
1987 32' Excella
Knoxville , Tennessee
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For batteries in parallel. Whatever you do with the negatives, you have to do it to both.
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