Parasitic Battery Draw Test Switch OTC7645

Parasitic Battery Draw Test Switch

Features and Benefits:

• Finds electrical problems that drain the battery
• Digital amp meter takes the guesswork out of a complicated job
• Works on any vehicle with side or top post batteries

Attach the test switch between the negative battery cable and the battery, and then road test the vehicle. Next, connect an amp meter to the switch to determine the parasitic amperage draw, and locate the excessive electrical drain on the battery.