Battery
Mon Aug 25 2025
Introduction
Car batteries are often overlooked until the day your engine won’t start. They are designed to provide a surge of power to start your vehicle and to keep essential systems running when the engine is off.How Car Batteries Work
A typical car battery is a lead-acid battery, which stores energy through chemical reactions between lead plates and sulfuric acid. When you turn the ignition key, the battery delivers a burst of electricity to the starter motor, which cranks the engine. Once the engine is running, the alternator takes over to recharge the battery and power your car’s electronics.Signs Your Car Battery Needs Attention
Car batteries are often overlooked until the day your engine won’t start. They are designed to provide a surge of power to start your vehicle and to keep essential systems running when the engine is off.How Car Batteries Work
A typical car battery is a lead-acid battery, which stores energy through chemical reactions between lead plates and sulfuric acid. When you turn the ignition key, the battery delivers a burst of electricity to the starter motor, which cranks the engine. Once the engine is running, the alternator takes over to recharge the battery and power your car’s electronics.Signs Your Car Battery Needs Attention
- Slow engine crank when starting
- Dim headlights or electrical issues
- Clicking noise when turning the key
- Warning light on the dashboard
- Check connections: Ensure terminals are clean and free from corrosion.
- Drive regularly: Short trips may not give the alternator enough time to recharge the battery.
- Test the battery: Most auto shops can do a quick voltage and load test.
- Replace on time: Car batteries usually last 3–5 years depending on climate and usage.