> The starter motor can be used for a load test. Just measure the voltage > across the battery terminals while cranking. performs a basic load-test of > the battery, using the vehicle’s starter motor. This test is done with the > engine cranking. Use care to keep the voltmeter test leads from contacting > moving or hot engine parts. > Tool required: Digital Voltmeter, set on DC Volts > > Test Lead position: across battery terminals. > > While cranking, read the voltmeter. If the voltage reading is below the > minimum listed in the following chart, replace the battery. > > Be aware that other possible causes of low readings in this test are a > failing starter motor or an engine with mechanical problems. > > Minimum Battery Load-test Voltage > > > Battery Temp Degrees F > > 9.90 > > 100 > > 9.80 > > 90 > > 9.70 > > 80 > > 9.60 > > 70 > > 9.50 > > 60 > > 9.40 > > 50 > > 9.30 > > 40 > > 9.10 > > 30 > > 8.90 > > 20 > > 8.70 > > 10 > > 8.50 > > > 0 > > > > > Sent from my iPhone
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