£7 gadget you must buy before changing your car’s battery… or risk annoying issue that takes hours to fix

A MECHANIC has urged drivers to pick up a £7 gadget before they change their car’s battery or risk an irritating issue that takes hours to repair.

Cutting the power to your motor can play havoc with its computer system and leave you paying out hundreds.

GettyAn expert mechanic has urged drivers to take precautions before changing their car’s battery[/caption] YouTube / @scottykilmerScotty Kilmer explained how failing to do so could leave you with hours of repairs on your hands[/caption]...