8 Comments

I have a couple of wrenches dedicated to battery terminals. I just wrapped them with electrical tape.

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I have wrapped a couple of combination wrenches too with red electrical tape. I never use the box end on battery fasteners.

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Are the batteries in your depiction in parallel or series?

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author

Actually, series/parallel. The two 6-volt batteries on the left are in series to make 12 volts. And the two batteries in the right are in series to make 12 volts. The the left pair and right pair are connected in parallel to double the Amp-hr capacity.

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My Thor class c has two 12v batteries under the steps. You have to disconnect and remove one battery and then slide the second battery forward before you can get to the battery terminal connected to chassis ground. Who designed that accident waiting to happen? I thought about rearranging the cables but then they would all be either too long or too short.

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What does one do when Magnum Inverters says to disconnect the positive post first? I've seen some discussion about this and no clear answer. FWIW I have disconnected mine for changing and cleaning with no ill effects.

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author

That’s apparently only for the early Magnum inverters with the old-style remote panel. I tried to get a definitive answer out of Magnum help desk, but they couldn’t explain it and wouldn’t let me talk to an application engineer.

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I have a 2018 Magnum, have no auto Gen start, and have had no issues disconnecting the negative first.

Also, Mike discussed this in more detail here last year, July 12, 13, 21.

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