How do I know if my Vauxhall Astra needs a new battery?

I've been having some trouble starting my Vauxhall Astra and I'm not sure if it's due to a faulty battery. What are some signs that indicate I may need to replace the battery?

If your engine is struggling to start or the lights on your dashboard are dimmer than usual, it may be a sign that your battery is dying and needs to be replaced.

Another indication of a failing battery is if you notice a rotten egg smell coming from under the hood of your car. This could be due to a leaking battery and should be addressed immediately.

You can also test your battery's voltage using a multimeter. If it reads below 12.4 volts, it may be time to replace your battery.