Is It Possible for My Suzuki Bolan’s Electrical System to Drain the Battery?
Is It Possible for My Suzuki Bolan’s Electrical System to Drain the Battery?
I’ve been facing issues with my Suzuki Bolan’s battery draining, even when I haven’t used the vehicle for a while. Could there be an issue with the electrical system causing the battery to drain overnight? How can I check for parasitic drain, and what steps should I take to fix it?
1 Answer
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Gari Specialist asked on 10 Apr 2025 18:10:43 pm


Yes, a parasitic electrical drain could be causing your battery to die. This means that some electrical component is still drawing power from the battery even when the vehicle is turned off. Common causes of parasitic drain include:
Faulty door switches that leave the interior lights on.
Malfunctioning components like radios, alarms, o r faulty wiring.
Aftermarket accessories such as car stereos that may be improperly wired.
Solution: To identify parasitic drain:
Perform a parasitic drain test by disconnecting the negative terminal of the battery and using a multimeter to measure current draw.
If the current draw is higher than normal about 50mA o r less, you’ll need to trace the source of the drain by checking each circuit and component.
A professional mechanic can help if you’re unsure how to perform this test.
Faulty door switches that leave the interior lights on.
Malfunctioning components like radios, alarms, o r faulty wiring.
Aftermarket accessories such as car stereos that may be improperly wired.
Solution: To identify parasitic drain:
Perform a parasitic drain test by disconnecting the negative terminal of the battery and using a multimeter to measure current draw.
If the current draw is higher than normal about 50mA o r less, you’ll need to trace the source of the drain by checking each circuit and component.
A professional mechanic can help if you’re unsure how to perform this test.