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How To Check A 9 Volt Battery. Any reading of voltage below 95 volts or if the battery holds a good record for a while and steadily drops or even when it falls instantly to 0 volts then it means there is a problem and the battery. Steps on How to Test a Fuel Injector With a Battery.
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The voltage of the battery will appear on the multimeter screen. Choose your desired battery. If the battery seems reasonably clean stic.
Then the leads are connected to the battery terminals positive to positive and negative to negative to get the voltage.
Connect the test probes to your cell with the black wire meeting the negative. Its not the entire answer the battery typically really starts to spiral down at about 74 V thats abo. A nine volt battery has six cells so a new would have an open circuit voltage of 948V. Hold the black probe to the negative end of the battery and the red probe to the positive end to test the batterys milliamps.
