“My Car Won’t Start!” A Troubleshooting Guide to a Dead Battery
Posted by Global Batteries Alberton – 14 May 2025
Few things are more frustrating than turning the key and hearing nothing. A flat or failing battery is one of the most common reasons a car won’t start. Here’s a simple guide to check, test, and get back on the road safely.
Step 1: Look for Warning Signs
- Dim headlights or interior lights
- Clicking sound when you turn the key
- Slow cranking engine or dashboard warning lights
Step 2: Test the Battery
If you have a multimeter, check the voltage across the terminals. A healthy battery should read around 12.6V when fully charged. Anything below 12V may indicate a discharged or faulty battery.
Step 3: Inspect Connections
Loose or corroded terminals can mimic a dead battery. Ensure the clamps are tight and clean off any white or green corrosion with a brush.
Step 4: Jump-Start Safely
Use a good set of jumper cables and a donor vehicle or a portable jump starter:
- Red cable to positive (+) of dead battery.
- Other red cable to positive (+) of donor battery.
- Black cable to negative (–) of donor battery.
- Other black cable to a solid, unpainted metal surface on the car with the dead battery (not the battery itself).
- Start the donor car, then try starting yours.
Once started, keep your engine running for at least 20–30 minutes to recharge, or drive to your nearest battery specialist.
Step 5: Get a Professional Test
If the problem keeps coming back, it’s time for a full battery and charging system test. At Global Batteries Alberton, we offer free testing and expert fitment to ensure you’re not left stranded again.