|Written by Lifeengineer|
A multimeter can be used for a variety of different electronic testing including¬†to test a battery.¬† Keeping batteries fresh is very important for electronic devices such as smoke alarms.¬† Make sure the voltage is the batteries are within operating ranges.¬† This article will show you how, using a multimeter.
Step 1:¬† Turn¬†the multimeter on and set the setting dial to the DC voltage read setting as shown in the photo above.
Step 2: Place the red (+) and black (-) probe inputs into the correct holes.¬† Some multimeters have the probe wires permanently attached.
Step 3:¬† Touch the red probe lead to the + terminal of the battery while you touch the black probe lead to the - terminal of the battery.
Step 4: Read the¬† DC voltage value from the screen of the multimeter.¬† A typically battery AA, AAA, C, and D should read at least 1.5 volts or slightly greater to be considered good.
A 9 volt battery should read, you guessed it 9 volts or slightly higher.