Parasitic Battery Load Diagnosis
The term Parasitic Load refers to electrical devices that continue to use or draw current after the ignition switch is turned to OFF position. This small amount of continuous battery draw is expressed in milliamps (mA). A typical Parasitic Load can be around 30 milliamps (0.030 amps). On most domestic vehicles produced after 1980, a standard Parasitic Load should be no more than 50 milliamps (0.050 amps).
Vehicles produced since 1980 have memory devices that draw current with ignition off for as long as 20 minutes before shutting down the Parasitic Drain. When Parasitic Load exceeds normal specifications, the vehicle may exhibit dead battery and a no-start condition.
The experts at Hollenshade’s in Towson can address any problems you may experience with your vehicle’s electrical system. Please CONTACT US for an appointment or to ask us a question about battery load testing.