Connecting batteries in reverse polarity can damage devices.

the verdict

SUPPORTED

the evidence backs this

Recorded sources

3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that connecting batteries in reverse polarity can damage devices?

Yes. Two encyclopedia entries state that reversing battery polarity risks causing damage to the device or the battery, and a do-it-yourself encyclopedia notes that reversed battery cable connections can damage an alternator.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked 17 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 3

mcgrawhillencyclopediaofsciencetechnology10theditionvolume2ansbin

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mcgrawhillencyclopediaofsciencetechnology10theditionvolume2ansbin. (n.d.). archive.org. https://archive.org/details/mcgrawhillencyclopediaofsciencetechnology10theditionvolume2ansbin

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More for · 2

encyclopedia-of-science-and-technology-mc-graw-hill

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encyclopedia-of-science-and-technology-mc-graw-hill. (n.d.). archive.org. https://archive.org/details/encyclopedia-of-science-and-technology-mc-graw-hill

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popular-mechanics-do-it-yourself-encyclopedia-volume-1-1968. (n.d.). archive.org. https://archive.org/details/popular-mechanics-do-it-yourself-encyclopedia-volume-1-1968

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