How do I test a 9-volt battery with a multimeter?

Touch the red multimeter probe to the positive terminal of the 9-volt battery. Touch the black multimeter probe to the negative terminal of the 9-volt battery. The voltage of the battery will appear on the multimeter screen. If the measured voltage is not at least eight volts, replace the battery.

What voltage should a 9V battery read?

A nine volt battery has six cells, so a new would have an open circuit voltage of 9.48V. A reading of 9V indicates a battery with no to less than 10% discharge. FWIW they do self discharge at about 2% a year. It is always a good idea to check the date on the package to get the freshest ones available.

What setting do you use on a multimeter to test a battery?

For testing the electrical output from a vehicle battery, the multimeter dial should be turned to the “20 volts” setting. But before the multimeter can be used, all surface charge from the battery must be removed to allow for an accurate reading.

How do you connect a voltmeter to a battery?

Take the black wire, or negative terminal, of the voltmeter and connect it to the negative terminal of the strip or resistor. Take the red wire, or positive terminal, of the voltmeter and connect it to the positive terminal of the terminal strip or the positive end of the resistor where the positive terminal of the battery is also connected.

How do you test a battery tester?

Place the watch to the Battery tester. Place the smart-watch to be tested by the crystal face up on the tester panel or tester board in the region designated. Quickly after the watch case offers contact with the testing cover, the tester should start beeping if the battery of the watch is in great condition.

Does analog voltmeter require battery?

If your multimeter is digital, it will require a small battery to operate. If it is analog, it does not need a battery to measure voltage. Some digital multimeters are autoranging.

What is normal battery volt reading?

If your battery is in good condition, the voltage should be between 12.4 and 12.7 volts. A reading lower than 12.4 volts means that your battery needs to be charged. If the reading is lower than 12.2 volts, “trickle charge” the battery, which is a slow charge.