When to Replace a Car Battery: The Lowdown
So, the engine’s cranking slow or just won’t fire up? That’s usually the first sign it’s time to swap out the battery. Other red flags? Dim headlights and dashboard warning lights. A quick visual check can reveal corroded terminals or a swollen battery—both scream “replace me!” And if there’s any doubt, a voltage test does the trick. Wait about 30 minutes after running the car, then check. Anything below 12.4 volts? Time to worry.
What Do the Numbers on a Car Battery Mean?
The first number to catch the eye on a car battery is the group size. This is the standard for battery dimensions, terminal size, and polarity—basically, it’s the battery’s ID tag. Then there’s the cold cranking amps (CCA). The higher the CCA, the easier the start, especially for bigger engines. And let’s not forget ‘reserve capacity.’ This tells how many minutes the battery can keep supplying 25 amps before it’s flat. So, if the alternator takes a dive, the reserve capacity gives a little breathing room.
Which Battery Fits My Car?
Wondering what battery to grab? The Supercheap Auto website has a handy “my garage” feature. Just plug in the rego number or search for the vehicle, and it’ll suggest the right battery. Owner’s manuals usually list battery specs, too. Keep an eye out for the group size and CCA to find a match for a new battery.
How Long Does a Car Battery Last?
A car battery can last anywhere from a year in harsh conditions to over five years if treated right. Here are some things that can shorten its life:
- Extreme temperatures—both hot and cold.
- Draining power by leaving lights and accessories on without the engine running.
- Frequent short trips that don’t give the alternator enough time to charge.
- Poor maintenance.
- Not driving often—if the car’s sitting for more than a couple of weeks, the battery won’t be happy.
- A faulty charging system that overcharges or undercharges the battery.
How Much Does a Car Battery Cost?
With all the tech in modern cars, batteries aren’t the cheap and simple items they used to be. Sure, basic flooded lead-acid batteries can be found for under $150, but they’re mainly for older rides. The bigger the engine and the fancier the electronics, the more cash that’ll be needed for a new battery. Opting for one with extra CCA and reserve capacity often means a longer warranty, too.
How to Change a Car Battery?
Before diving into changing a car battery, check the specific instructions for the vehicle. It’s crucial to ensure the task is within the skill set. Here’s a quick guide on how to change a car battery using the most common method.
