Product Description
The OTC 7645 Parasitic Draw Tester is an essential diagnostic tool for auto mechanics, technicians, and shops troubleshooting mysterious battery drains in modern vehicles. This inline test switch installs between the negative battery cable and battery terminal, allowing safe road testing without risking module damage from sudden disconnection. Once tested, connect your digital amp meter across the switch terminals to accurately measure parasitic amperage draw and systematically isolate the faulty circuit by pulling fuses. Compatible with any vehicle featuring side-post or top-post batteries, it simplifies complex electrical diagnostics in cars, trucks, and SUVs. Rugged construction ensures reliable performance in professional environments, making it a must-have for efficient battery and charging system repairs.
Key Features and Compatibility:
- Inline test switch design
- Safe road testing capability
- Works with digital amp meters
- Fits side & top post batteries
- Precise parasitic draw measurement
- Durable professional build
- Universal vehicle compatibility
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parasitic test switch
tester is simple to use
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Draw Test Switch
works well and works quick
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Parasitic Draw Tester
This parasitic draw tester is one of the greatest testers that I have ever owned. Finding the issue when using this is never a long struggle and it is always correct. I have before had testers that have given us the wrong diagnosis and for this one to be so great is such a relief. The price really is not a bad one to pay considering how great it is.
