Why does my Suzuki Mehran’s battery keep dying even after replacing both the battery and terminals?

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Why does my Suzuki Mehran’s battery keep dying even after replacing both the battery and terminals?

I’m using a 2010 Suzuki Mehran, and I’ve recently changed the battery and even replaced the battery terminals. Despite that, the car battery keeps draining within a few days. A local mechanic suggested the alternator might not be charging properly. How can I test if the alternator is the real issue, and is this a common problem in Mehran?

Gari Specialist asked on 17 Apr 2025 17:53:57 pm

1 Answer

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Gari Master - on 17 Apr 2025 18:05:27 pm

If your battery is new and the terminals are clean and tight but it still keeps dying, the issue likely lies in the charging system — especially the alternator. The alternator is responsible for recharging the battery while the engine is running. Common reasons for alternator failure in Suzuki Mehran include:

Worn-out brushes o r bearings

Loose o r broken alternator belt

Faulty voltage regulator

Damaged diodes inside the alternator

To confirm, you can check the voltage across the battery terminals while the engine is running — it should be between 13.5V to 14.5V. If it’s lower, your alternator isn’t charging properly. Visit an electrician for a proper alternator test using a multimeter o r charging system tester.