You’ve been thunderstruck.

AC/DC fans are discovering that a sewing machine inspired the ’70s rock band’s name.

Even though popular hits like “Highway to Hell” and “You Shook Me All Night Long” by the band still receive airplay in the United States, a Reddit user recently brought up the debate surrounding how the group chose their name.

One user suggested people thought AC/DC stood for “anti-Christian Devil children” but then revealed the actual origins are much more innocent.

During the period leading up to a New Year’s Eve performance at a nightclub, founding members Angus Young and his late brother Malcolm, who passed away in 2017 due to dementia-related complications, were brainstorming potential names for their band. It was at this time that their sister-in-law, Margaret, proposed the name AC/DC, drawing inspiration from the label on her sewing machine that denoted the use of an AC adapter.

She also suggested they use a lightning bolt as their logo.

In a VH1 documentary episode of “Behind the Music,” Malcolm recounted the moment, stating, “Her sewing machine had AC/DC on the back of it. We were tossing around names for weeks and she just said it one night and everyone went ‘That’s good.’”

“I thought it’s an easy name to remember and it was on the side of a lot of electrical appliances,” original singer Dave Evans said during a recent interview on the Podpokas Podcast.

An AC adapter “is a device that converts alternating current (AC) from a wall outlet into direct current (DC) that can be used by electronic devices such as computers, laptops, and smartphones” according to the tech company Lenovo.

Angus and Malcolm agreed that the name would match their electric performances and the band unanimously agreed to call their group AC/DC.

AC/DC is supposed to be pronounced one letter at a time but reportedly people in Australia call it “Acca Dacca.”

Even the branding of AC/DC aligned with the theme of their first studio album “High Voltage with the 1976 record having songs like “The Jack,” “Live Wire” and “T.N.T.”

In 1979, the “Highway to Hell” album’s song, with the same name, landed at No. 1 on Billboard’s mainstream charts and has received over 1.8 billion streams on Spotify.

But the band’s early success also came with heartbreak.

Lead singer Bon Scott died of alcohol poisoning before the recording of their 1980 album “Back In Black” which featured “You Shook Me All Night Long.”

It became one of the best-selling albums of all time.

In over 50 years, the band has received 10 Grammy award nominations and one win.

The rockers are gearing up for their 2025 world tour starting this spring in Minneapolis.