> 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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