The alternator is a device that keeps your car’s electrical system running once the engine is on. It’s essentially a small generator that converts mechanical energy into electricity, bolted to the ...

Disconnecting the battery while the engine is running isn't a valid test for alternator function and may damage sensitive electronic parts. Instead, use a common voltmeter and the following test ...

VDC Electronics says its BatteryMinder Battery and Alternator Condition Tester provides the condition of a vehicle’s battery and alternator with the simple press of a button. The unit’s multicolored ...