Sponsored Topics. Ruffin is an unincorporated community located in Rockingham County, North Carolina. It is northeast of Reidsville, North Carolina and southwest of Danville, Virginia just off US 29 (Future Interstate 785). It has a population of 2,116[citation needed].
Test your battery using HP Battery Check. Running HP Battery Check with HP Support Assistant installed: Running HP Battery Check without HP Support Assistant installed: 1  Click Start. 2  Click HP Support Assistant. 3  Click Troubleshoot. 4  Click the Power, Thermal and Mechanical button. 5  From the Power tab, click HP Battery Check.
Crank for 15 seconds (no longer); the battery voltage should remain 9.6 volts or above. Another way to check is with a dedicated battery tester that has its own internal resistor pack and voltmeter. This is a lot easier to use--you don't need to disable the engine to crank it. Just check the voltage after 15 seconds.