Why is my Car’s Battery Draining and Ways to Prevent it?

Is your car feeling sluggish lately? If you’ve been scratching your head, wondering why your car’s battery seems to have a mind of its own and draining faster than your morning coffee, you’re not alone. We’ve all been there, frustrated by the unexpected dead battery that puts a dent in our plans. But fear not; in the section below, we’ll discuss this issue and provide ways to prevent it.

So, let’s get started.

Key Factors Behind Car Battery Drainage

Here are the significant reasons behind car battery drainage:

  • Parasitic Drains: Some vehicle components, like clocks, alarms, and infotainment systems, continue drawing power even when the ignition is off. Over time, these ‘parasites’ can lead to battery drainage.
  • Extreme Weather: India’s weather can be quite a rollercoaster. Excessive heat can cause the water in the battery to evaporate, leading to accelerated battery aging. On the other hand, cold temperatures can reduce a battery’s capacity to provide the necessary power to start your vehicle.
  • Short Drives: Quick trips around the block might not give your car’s battery ample time to recharge, causing a drain over time.
  • Corroded Terminals: Corrosion on battery terminals can create resistance, making it harder for the battery to charge appropriately.

Read Also: What to Look for When Shopping for a Car Battery?

Ways to Prevent your Car’s Battery from Draining

  • Continue Driving:
    Frequent and regular driving can help maintain the charge in your car’s battery. When the engine runs, the alternator charges the battery, keeping it healthy. Long drives at highway speeds are particularly effective in fully recharging the battery. If your car is often idle for extended periods, consider driving it at least once a week to prevent the battery from losing its charge.

  • Avoid Short Trips:

    Short trips, especially those that last for only a few minutes, don’t provide enough time for the battery to recharge fully. During these trips, the battery might not receive sufficient charge from the alternator, leading to gradual discharge over time. Whenever possible, combine errands or use alternative transportation for very short trips to minimize strain on the battery.

  • Shut Your Car Properly:

    Ensure all lights, interior accessories, and electrical components are turned off before exiting your car. Leaving headlights, cabin lights, or other electronics on can slowly drain the battery, even if it’s just a small interior light. Also, double-check that your vehicle is turned off and not in any power-draining mode before leaving it parked.

  • Keep a constant check on the Battery:

    Regular maintenance is essential to prevent unexpected draining. Keep an eye on the battery’s condition, including checking for signs of corrosion on the terminals. Clean any buildup of dirt or corrosion, as this can impede the flow of electricity. If your battery is more than a few years old, consider having it tested or replaced as part of routine maintenance.

  • Notice Warning Signs: 

    Be vigilant for warning signs that your battery might weaken. These signs can include a slower cranking sound when starting the engine, dimming headlights, or an illuminated battery warning light on your dashboard. Addressing these issues promptly can prevent a complete battery failure.


When it comes to preventing battery drain and keeping your vehicle in peak condition, AIS Carfit Experts goes above and beyond. With our exclusive car battery replacement services featuring top-notch brands like Amaron and Exide, we’re here to provide the Indian audience with a reliable and expert solution to their battery needs—Trust us to keep you on the move, hassle-free, and powered up.