Motoring writer Gareth Butterfield points out the problems that can be fixed in cars just by charging or changing the 12v battery ...

A weak battery can wreak havoc with all sorts of sensors, and this could mean you're very likely to see an orange "check engine" light appear on your instrument cluster as the car records a fault.

the more your car has to start and stop without charging up in-between, the shorter its battery life will be. The battery's only source of power is its alternator. You can check that's functioning ...

A dead battery can cause serious inconvenience, especially when it happens out of the blue. Fortunately, Halfords has made it easier than ever to check, replace, and fit car batteries—so you ...