Automotive Circuit Fault Probe Tester, 20A 48V Parasitic Battery Drain Tester for Car Fuse Circuits, Inline Current Monitor with Digital Display, LED Work Light, Mini & Standard Blade Fuse Compatible

About this item

• 【 Locate Battery Drain Faster】Stop guessing which circuit is draining your battery. This automotive fuse current tester helps identify abnormal current draw through individual vehicle fuse circuits, making it easier to diagnose parasitic battery drain, overnight power loss, and electrical issues from dash cams, audio systems, or other aftermarket accessories.
• 【Direct Fuse-Level Current Reading】Designed for fuse-slot testing, this 20A 48V parasitic draw tester works as an inline current monitor to show real-time DC current draw directly on the LCD screen. Check individual fuse circuits without disconnecting the vehicle battery and compare readings faster during troubleshooting.
• 【0.01A–20A Real-Time Measurement】Measures current from 0.01A to 20A with a clear digital display, helping you observe small current changes and actual load behavior in fuse circuits. Ideal for checking unusual power consumption, current draw, and automotive electrical faults during diagnosis.
• 【Maintains Factory Fuse Protection】The built-in fuse holder allows the original vehicle fuse to stay in the circuit while measuring current. Insert the vehicle’s original fuse or the correct fuse rating specified for that circuit to help keep factory circuit protection active during testing.
• 【 LED Work Light & Durable Tool Design】Built-in LED work light helps illuminate dark fuse boxes under the dashboard, in the engine bay, or during low-light repairs. Compact ABS/PC housing with a non-slip grip is easy to carry, store, and use for cars, trucks, RVs, garages, and mobile diagnostics.