With temperatures reaching 34°C this week, it’s important to take extra care of your car battery to prevent heat-related damage.
Hot weather can shorten a car battery’s life by causing fluid evaporation, internal corrosion, and faster chemical reactions.
Here are practical steps to protect your car battery in high temperatures:
🔧 1. Parking Smart
- Park in the shade whenever possible.
- Windshield sunshades can help to reduce heat buildup inside the car.
- Car covers are a great option for long-term parking protection.
🧼 2. Keep the Battery Clean
- Heat can speed up corrosion on the terminals.
- Check for any white/blue buildup on battery terminals and clean it with:
- A mix of baking soda + water
- A wire brush or cloth
- Always ensure that terminals are tight and secure.
🔋 3. Check Battery Fluid (if applicable)
- Some batteries allow inspection of electrolyte levels.
- Top up with distilled water only if levels are low (avoid overfill).
- Maintenance-free batteries don’t need this step.
⚡ 4. Test Battery Health
- Heat can weaken the battery internally.
- Get it tested periodically – Pop in and we can check this for you!
- If the battery shows signs of weakness, it is best to get it replaced—don’t wait for complete failure.
🔌 5. Minimize Electrical Load
- Avoid running electronics like the AC, radio, or lights when the engine is off.
- Heavy use of electronics increases strain on the battery, especially in heat.
🚗 6. Drive Regularly
- Frequent short trips or long periods of inactivity can weaken a battery.
- Take a longer drive to keep it fully charged.
🔄 7. Replace Older Batteries
- Most car batteries last 5-8 years, but extreme heat can shorten that.
- If your battery is older, consider proactive replacement before summer peaks.
⚠️ Warning Signs of Heat Damage
Watch out for:
- Slow engine crank / sluggish or laboured sounds
- Swollen battery casing
- Strange smells (sulphur/rotten eggs)
- Dashboard battery warning light
✅ Quick Summary
Protect your battery by keeping it cool, clean, secure, and regularly checked. Heat is more damaging than cold, so a little maintenance in summer goes a long way.