some of the signs to look out for that suggests you need to change your battery.
if you treat your battery well then it can last for over five years. that means you should try not to make too many short journeys as you will have to switch the engine on and off frequently, which will require a lot of power from your battery. you should also be careful not to use functions like the radio and air conditioning more than you need to, especially when your engine is off.
after around five years, however, it might be worth looking to get your battery changed. even when treated well, batteries will slowly 