Forget radio, in the 1960s-70s, people relied on physical media like 8-tracks and cassette tapes. The Highway Hi-Fi allowed you to play vinyl records in your car, but the quality wasn't great.

A standard 12-volt battery has six cells that each produce around 2.1 volts or 12.6 volts collectively. ... Most 12-volt car batteries typically last three to four years on average.

If your car's battery needs a boost with a 12V charger, you may be wondering how long the whole ordeal will take. A bit of a wait is better than alternatives.