You will need to do a Luminous test using a special battery meter (or a multi-meter). A fully 100% charged battery should register 12.66V or more on your voltmeter. If the voltmeter reading is less than 12V, your battery is no longer good and it would be wise to replace your car battery. If the reading is <11V, your car battery is about to run out and you should replace your AC Voltage Stabilizers immediately in Noida.
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