Why does my Honda City’s battery drain overnight o r when parked for a long time?

Home > Gari Forums > Honda Forums > Honda City Forums > Honda City Dead Battery Forums

Why does my Honda City’s battery drain overnight o r when parked for a long time?

Some owners experience a parasitic drain, where the battery loses charge even when the car is off. Could this be caused by faulty electronics, an aftermarket security system, o r interior lights left on? How can this issue be diagnosed?

Sandeep asked on 26 Feb 2025 17:20:29 pm

1 Answer

20 views |

Car Mechanic Expert - on 26 Feb 2025 17:22:59 pm

A battery drain overnight o r when the car is parked for extended periods is usually caused by a parasitic drain. This means that some electrical component continues to draw power even when the car is off. Common culprits include faulty electronics, an aftermarket security system, o r interior lights that are left on. To diagnose this, you can perform a parasitic drain test using a multimeter to check the current draw when the car is off. A mechanic can also identify which system is causing the drain by isolating individual circuits.